F16C/D. FLIGHT MANUAL (2002)

T.O. GR1F16CJ1

1194Change 1

Net Number

After TOD and WOD are entered, any valid AJ net

number can be selected by using the manual

frequency knobs.

Antijamming (AJ) Mode Operation

An intermittent tone is heard in the headset if an

invalid AJ net is selected. A steady tone is heard if

TOD was not received or if a WOD for the current date

was not entered.

In the AJ mode, the radio can receive and process two

simultaneous transmissions on the same net.

Conferencing is controlled by the WOD loaded in

channel 19. If the WOD in channel 19 ends with 00 or

50, conferencing is possible. If the WOD in channel 19

ends with 25 or 75, conferencing is disabled.

If the function knob is set to BOTH and guard channel

jamming is encountered, switching the function knob

to MAIN negates the jamming.

HAVE QUICK (HQ) UHF RADIO

The UHF radio provides lineofsight communica

tions. UHF transmissions are made by holding the

UHF VHF IFF transmit switch on the throttle to the

UHF position. Frequencies range from

225.000399.975 MHz. The guard receiver monitors

the guard frequency of 243.0 MHz. Power, volume,

squelch, guard, and tone controls are located on

AUDIO 1 control panel. HAVE QUICK mode selection

and other UHF functions are controlled by the

upfront controls.

Twenty or 19 channels may be preset using upfront or

backup controls, respectively. The UHF radio is

emergency ac bus No. 2 and emergency dc bus No. 2

for operation on upfront control.

Operation of the UHF Radio on Upfront Controls

To change UHF preset channels on the CNI page,

refer to CNI READOUT/DED PAGE SUMMARY, this

section.

The UHF page is selected by depressing the COM 1

override button on the upfront controls.

Functions available on the UHF page are:

Changing preset channels and manual frequen

cies.

Changing between MAIN and BOTH functions.

Channelizing frequencies.

Changing bandwidth.

Updating TOD and selecting AJ mode.

The UHF page displays its data on five lines. The first

line contains information about the radio mode and

transmission status. The radio mode displays

UHFTOD for normal operation; HQTOD is

displayed when the AJ mode is selected. Either label

is highlighted when the radio is keyed. The

transmission status is displayed as OFF, MAIN, or

BOTH. OFF is displayed when power is turned off

with the COMM 1 power knob.

PX III

Following UFC power cycles with weighton

wheels, BOTH is automatically displayed; when

airborne, the previously selected mode (MAIN or

BOTH) is retained.

MAIN is displayed when transmissions are received

only on the main UHF receiver; BOTH is displayed

when transmissions are received on both the main

and guard receivers. The second line displays the

active frequency or preset channel number. Line

three displays the data entry scratchpad. The fourth

line displays the label PRE and a preset channel

number, increment and decrement symbols, and the

label TOD.

Line five displays the frequency associated with the

preset channel and selected bandwidth, which is

displayed as either narrow band (NB) or wide band

(WB).

PX III

At UFC power up and weightonwheels,

NB is automatically selected.

PX III

The CNI

readout/DED page summary shows the radio mode

UHF, transmission status (BOTH), active preset

channel number (10), the scratchpad frequency

(*235.00*), a preset channel (PRE 10), and label

(TOD), the frequency associated with the preset

number in line four (226.00), and radio bandwidth

(NB).

PX II

The CNI readout/DED page summary

shows the radio mode (UHFTOD), transmission

status (MAIN), active preset channel number (10),

the scratchpad frequency (*235.00*), a preset

channel (PRE 10), the frequency associated with the

preset channel in line four (226.00), and radio

bandwidth (NB).

T.O. GR1F16CJ1

Change 11195

Changes on the UHF page are made by the use of

asterisks and the keyboard, the increment/decrement

switch, or the SEQ position of the DCS, depending on

the nature of the change. Asterisks (*235.00*) are

moved by up/down movement of the DCS through the

following locations: scratchpad, TOD, bandwidth

(UHF mode only), radio mode, preset channel, preset

channel frequency designation, and back to the

scratchpad. Information enclosed by the asterisks

may be changed. With asterisks properly positioned,

the radio mode and bandwidth are changed by

depressing any ICP/IKP key (19). Channels/frequen

cies are changed by placing the asterisks over the

scratchpad, keying in the desired channel/frequency,

and then depressing the ENTR button. If one or two

digits are entered, a preset channel is selected; if

three to five digits are entered, a frequency is

selected. Extra numbers over five digits are ignored.

When the ENTR button is depressed, the channel/fre

quency changes and the DED reverts to the

overridden page. (If the COM 1 override button is

depressed and the ENTR button is depressed without

keying new digits in the scratchpad, the channel or

frequency that was previously in the scratchpad is

selected.) The preset channel is changed by using

either the increment/decrement switch (note the

up/down triangles next to the preset channel number)

or by use of the asterisks and keyboard as previously

described. As the preset channel is changed, its

associated frequency also changes. Changing

between MAIN and BOTH functions can only be

accomplished by positioning the DCS to SEQ. This

action can be accomplished independently of asterisk

position. For HAVE QUICK selection, enter 0 in the

scratchpad.
HAVE QUICK primary page displays data on five

lines. The first line displays HQ radio mode with

submode characters (HQTNG or HQCBT).

PX III

The receiver mode (BOTH, MAIN) is displayed on

the first line and can be changed by positioning the

DCS to SEQ.

PX II

The net types for training

submode are displayed TNET or FMT; combat

submode net types are A/B, NATO, or NNTO. Line

two displays

PX III

the active net number/preset

and the net type,

PX II

the active net number/pre

set. When using combat HAVE QUICK frequencies,

the first three digits indicate the HAVE QUICK net

number. The last two digits indicate the combat

submode where 00 corresponds to A/B, 25 to NATO,

and 50 to NNTO. For example, A32.425 is combat

net 324, submode NATO.

Line three displays data entry scratchpad, where new

active net numbers or preset numbers are keyed in

and entered. Changing the active preset via the

scratchpad also sets the preset number to the same

value. Line four displays PRE mnemonic, preset

channel number and TOD label. The system supports

entry/storage of 20 net numbers in preset locations.

The fifth line displays the preset net number.

Asterisks are moved by up/down movement of the

DCS through the following locations: scratchpad,

TOD, HQ submode, preset channel number, preset

net, and back to the scratchpad.

Special considerations should be given in instances

where the features of the HAVE QUICK radio are

used. The HAVE QUICK radio operates in two

modes:UHF, for the normal mode using a single

UHF frequency, and HQ, for the AJ mode using

pseudorandom frequencyhopping techniques.

Before the AJ mode can be used a WOD must be

loaded, a TOD must be received, and a valid net must

be selected. The radio automatically accepts the first

TOD message received after the radio is turned on.

After the initial TOD is received an updated TOD can

be received by placing the asterisks around the TOD

label on the UHF page and then depressing the ENTR

or MSEL button. The asterisks autostep back to the

scratchpad and TOD is highlighted. A TOD update

must be received within 1 minute of depressing the

ENTR or MSEL button. TOD label dehighlights after

1 minute or when a scratchpad operation is

performed. If the TOD label is highlighted when an

UFC power cycle or an autorestart occurs TOD label

is dehighlighted upon power up. If the TOD label is

highlighted and the COM 1 HQ page is exited (for a

reason other than a scratchpad autoexit operation),

the TOD label remains highlighted on the COM 1 HQ

page (if the page is reentered before the 1 minute time

delay has timed out). After the TOD update and with

proper WOD entries on the UHF backup control

panel, the AJ mode is accessed by entering zero on the

scratchpad which gives the ability to switch between

HQ and UHF modes. There is no autoexit when zero

is entered on the scratchpad. When HQ is selected,

the bandwidth window is blanked from the page.

Nets, consisting of three digits, are entered and

changed just as operating frequencies and can be

preentered in preset locations.

T.O. GR1F16CJ1

1196

UHF Radio Backup Control Panel

Refer to figure 182. The UHF radio backup control

panel, located on the left console, controls the UHF

radio, when required, by positioning the

PX II

CNI

knob to BACKUP (AUX COMM panel),

PX III

C & I

knob to BACKUP (IFF control panel. When BACKUP

is selected, the controls on the UHF radio backup

control panel have the following functions:

Function Knob

Functions are:

OFF - Power off.

MAIN - With COMM 1 power switch on, UHF radio

operates on selected frequency.

BOTH - Normal operation plus receiving on guard

frequency.

ADF - Not operational.

Mode Knob

PX II

Functions are:

MANUAL - UHF frequency is selected by manually

setting the five frequency knobs.

PRESET - UHF frequency is determined by the

CHAN knob.

GUARD - The main receiver and transmitter are

automatically tuned to the guard frequency and the

guard receiver is disabled.

Mode Knob

PX III

Functions are:

MNL - UHF frequency is selected by manually

setting the five frequency knobs.

PRESET - UHF frequency is determined by the

CHAN knob.

GRD - The main receiver and transmitter are

automatically tuned to the guard frequency and the

guard receiver is disabled.

GR1F-16CJ-1-0081A37

2. FILL Connector

3. CHAN Display

4. Frequency/Status Display

5. CHAN Knob

6. STATUS Button

7. Manual Frequency Knobs

8. Mode Knob

9. SQUELCH Switch

10. VOL Knob (Inactive)

11. T-TONE Switch

12. TONE Button

13. Function Knob

14. A-3-2 Knob

15. A-3-2-T Knob

16. TEST DISPLAY Button

17. LOAD Button

PX III

PX II

3 4 5

1. ZERO Switch

UHF Radio Backup Control Panel

18. Preset Channel Card and Access Door

(Typical)

C DF

Figure 182.

T.O. GR1F16CJ1

Change 11197

CHAN Knob

The CHAN knob permits the selection of 1 of 19

(MWOD) or 14 (single WOD) preset frequencies

(channels 119) with the mode knob at PRESET and

the

PX II

A32T,

PX III

A32 knob in either 2 or 3.

Preset channels used for WOD storage cannot be used

as preset channels for normal radio operation.

Frequencies set for each channel can be manually

written on a channel frequency card located on the

access door. Preset channel frequencies are set (or

changed) as follows:

Function knob - MAIN or BOTH.

Mode knob - PRESET.

Manual frequency knobs - Set to desired frequency.

CHAN knob - Set to desired channel.

Lift access door.

Depress

PX II

PRESET,

PX III

LOAD button under

access door.

Manual Frequency Knobs

The five manual frequency knobs allow manual

selection of frequencies in steps of 0.025 MHz from

225.000399.975 MHz.

A32T Knob

PX II

Functions are:

A - Selects AJ mode.

3 - Allows manual selection of frequencies.

2 - Allows manual selection of frequencies.

T - Momentary position which enables the radio to

accept a new TOD for up to 1 minute after selection.

Also used in conjunction with the TONE button for

emergency startup of the TOD clock when TOD is

not available from external sources.

A32 Knob

PX III

Functions are:

A - Selects AJ mode.

3 - Allows manual selection of frequencies.

2 - Allows manual selection of frequencies.

VOL Knob

The VOL knob is nonfunctional. Volume can only be

controlled by the COMM 1 (UHF) power knob.

SQUELCH Switch

Functions are:

ON - Enables squelch circuit which helps to

eliminate background noise in normal reception.

OFF - Disables squelch circuit to permit reception

of a weak signal.

TONE Button

PX II

Depressing the TONE button in normal or AJ mode

interrupts reception and transmits a tone signal and

TOD for HQ on the selected frequency. Simultaneous

ly pressing the TONE button in conjunction with the

A32T knob in T position starts the emergency

startup of the TOD clock. Pressing the TONE button

with channels 1, 14, 1520 selected in manual mode

enters MWOD data when in load mode. Pressing the

TONE button in erase mode erases all MWOD data.

CHAN Display

PX III

The CHAN display displays selected channel number

when mode knob is positioned to PRESET. If in

MLOAD or FMT.CNG operating mode, the selected

memory location is displayed. Display is blank when

the mode knob is positioned to MANUAL or GUARD.

Frequency/Status Display

PX III

The frequency/status display displays several condi

tions of radio operation. Four programming modes

control AJ operation. These modes are VER/OP,

MLOAD, ERASE, and FMT.CHG. These modes are

accessed by placing the CHAN knob to 20, rotating

the mode knob to PRESET, and keying in the

appropriate frequency for the applicable mode.

Frequencies are 220.000 for VER/OP, 220.025 for M

LOAD, 220.050 for ERASE, and 220.075 for

FMT.CHG. VER/OP is displayed when the STATUS

button is depressed. MLOAD is displayed when

MWOD's are loaded manually. ERASE is displayed

when WOD's are erased by depressing the TONE

button or by selecting 0. FMT.CHG is displayed when

frequency management training net frequencies are

changed by selecting a channel with the mode knob

and changing frequencies with the manual frequency

knobs.

Other displays are:

FILL - A fill device is connected to the FILL

connector to load MWOD's.

T.O. GR1F16CJ1

1198

BAD - A WOD was unsuccessfully received.

WOD OK - A correct WOD has been successfully

received.

STATUS Button

PX III

When the STATUS button is depressed, selected

preset channels and manual frequencies may be

verified on proper displays.

TTONE Switch

PX III

Functions are:

T - Momentary position which enables the radio to

accept a new TOD for up to 1 minute after selection.

Also used in conjunction with the TEST DISPLAY

button for emergency startup of the TOD clock

when TOD is not available from external sources.

TONE - In normal or AJ mode, the TONE position

interrupts reception and transmits a tone signal

and TOD for HQ on the selected frequency.

Selecting TONE with channels 1, 14, 1520 selected

in manual mode enters MWOD data when in LOAD

mode. Selecting TONE when in ERASE mode

erases all MWOD data.

TEST DISPLAY Button

PX III

Depressing the TEST DISPLAY button illuminates

all segments of the frequency/status display and the

CHAN display for a functional test.

ZERO Switch

PX III

Depressing the ZERO switch erases all MWOD data

regardless of radio switch/knob positions or radio

operating mode.

FILL Connector

PX III

The FILL connector connects fill device to the radio.

The FILL connector allows automatic MWOD

VHF RADIO

The VHF radio provides lineofsight voice commu

nication. VHF transmissions are made by holding the

UHF VHF IFF transmit switch on the throttle to the

VHF position. Transmission and reception are

available for AM from 116.000151.975 MHz and for

FM from 30.00087.975 MHz. Only reception is

available from 108.000115.975 MHz. Twenty chan

nels may be preset. Operation may be either on

narrow band or wide band. Narrow band is used for

all normal operations. Power, volume, squelch, guard,

and tone controls for the VHF radio are located on the

AUDIO 1 control panel. Other VHF radio functions

are controlled by the upfront controls. There are no

backup controls. In the event of certain failures of the

upfront controls, the VHF radio may remain on the

last frequency set prior to the failure. The VHF radio

is powered by

PX III

emergency dc bus no. 1,

PX II

the

nonessential dc bus.

Operation of the VHF Radio on Upfront Controls

To change VHF preset channels on the CNI page,

refer to CNI READOUT/DED PAGE SUMMARY, this

section.

The VHF page is selected by depressing the COM 2

override button on the upfront controls. Functions

available on the VHF page are:

Changing preset channels and manual frequencies.

Channelizing frequencies.

Changing bandwidth.

The VHF page displays its data on five lines. The first

line displays information about secure voice, the VHF

radio mode and status. The radio mode always

displays VHF for normal operation. The radio status

is displayed as ON or OFF; however, the ON and OFF

functions can only be controlled via the AUDIO 1

control panel. The second line displays active

frequency or preset channel. Line three displays the

data entry scratchpad, which is a fivedigit area

highlighted by two asterisks. The scratchpad is used

to change either channels or manual or active

frequencies, and it displays the channel/frequency

not currently being used. When the VHF page is first

selected, the scratchpad is displayed in one of two

ways:(1) If the radio is operating on manual

frequency, the scratchpad displays preset channel

entry. (2) If the radio is operating on preset channels,

the scratchpad displays manual or active frequency

entry. The fourth line contains the label PRE and a

preset channel number. The label PRE is highlighted

when the radio is tuned to a preset channel. Line

five displays the frequency associated with the

preset channel. The fifth line also shows the

selected bandwidth, which is displayed as either

narrow band (NB) or wide band (WB). The CNI

readout/DED page summary displays the radio

mode (VHF), radio power status (ON), active preset

channel number (12), the scratchpad frequency

(*135.00*), a preset channel (PRE 12), the

frequency associated with the preset channel in line

four (126.00), and bandwidth (NB).

T.O. GR1F16CJ1

1199

Changes on the VHF page are made by use of the

asterisks and the keyboard or the increment/decre

ment switch, depending on the change. Asterisks

(*135.00*) are moved by up/down movement of the

DCS through the following locations: scratchpad,

bandwidth, manual frequency, preset channel

number, preset channel frequency designation, and

back to the scratchpad. Information enclosed with

asterisks may be changed as described under

OPERATION OF THE UHF RADIO ON UPFRONT

CONTROLS, this section. The preset channel may

be changed by using either the increment/decre

ment switch (note the up/down triangles next to the

preset channel number) or by use of the asterisks

and the keyboard.

When operating on guard frequency, AM or FM

selections are available on the VHF page. To switch

from AM to FM or FM to AM, depress any ICP/IKP

key (19).

ZEROIZE SWITCH

Refer to figure 13. The ZEROIZE switch is a guarded

threeposition toggle switch.

When positioned to OFP, coded electronic information

associated with the following equipment is purged:

DTC.

PX II

FCC.

PX III

MMC.

GPS.

AIFF mode 4.

PX III

IDM.

PDG.

RWR.

When positioned to DATA, coded electronic

information associated with the following equipment

is purged:

DTC.

GPS.

AIFF mode 4.

PX III

MMC.

PX III

IDM.

Seat ejection also automatically performs an escape

zeroize operation; refer to EJECTION SEAT

OPERATION, this section.

NAVIGATION SYSTEMS

EMBEDDED GLOBAL POSITIONING AND

INERTIAL NAVIGATION SET (EGI)

PX III

The EGI is the prime sensor for aircraft velocity,

attitude, heading, position, and is a source of

navigation information. The EGI consists of an

embedded GPS receiver (EGR) and ring laser gyro

inertial navigation unit.

The EGR is a 12 channel receiver for allinview

tracking. The EGI provides GPSonly and free

inertial navigation solutions.

The EGI, in conjunction with the UFC, CADC, and

MMC, provides:

Acceleration.

Velocity.

Position.

Attitude.

Magnetic and true heading.

Altitude.

Angular rates.

Universal time coordinated (UTC) and time tags.

Instantaneous and maximum g data for display in

the HUD.

The EGI generates signals which drive the aircraft

attitude direction indicator (ADI) and horizontal

situation indicator (HSI).

For a detailed system description, refer to T.O.

GR1F16CJ3411.

T.O. GR1F16CJ1

1200

GLOBAL POSITIONING SYSTEM (GPS)

PX II

The GPS receives signals from orbiting satellites to

determine accurate aircraft position, velocity, and

time information. The FCC uses this data to reduce

inertial navigation errors and enable accurate

weapon delivery solutions. GPS data can also be

used for inflight alignment of the INS. The FLCS

uses GPS data for SWIM during TF. GPS data is also

used in HAVE QUICK timeofday updates.

Refer to T.O. GR1F16CJ3411 for a detailed

description of GPS.

INERTIAL NAVIGATION SET (INS)

PX II

The INS is a prime sensor for aircraft velocity,

attitude, and heading and is a source of navigation

information.

The INS, in conjunction with the upfront controls,

GPS, CADC, and FCC provides:

Present position with update and storage capability.

Current winds.

Groundspeed and drift angle.

Great circle course computation with steering

provided to 30 points.

Instantaneous and maximum g data for display in

the HUD.

For a detailed system description, refer to T.O.

GR1F16CJ3411.

TACTICAL AIR NAVIGATION (TACAN) SYSTEM

The TACAN system provides continuous bearing

and distance information from any selected TACAN

station within a lineofsight distance up to

approximately 390 miles, depending upon terrain

and aircraft altitude. Only distance information is

presented when a DME navigational aid is selected.

There are 252 channels available for selection. Two

antennas, one on top and one on the bottom of the

fuselage, provide omnidirectional coverage

regardless of aircraft attitude. The TACAN bearing,

selected course, range, and course deviation

information are displayed on the HSI as determined

by HSI and INSTR MODE knob settings.

Operation of the TACAN on Upfront Controls

The TACAN is controlled by the upfront controls

when the TACAN power knob on the AUDIO 2

control panel is placed to on (cw) and the

PX II

CNI,

PX III

C & I knob is in UFC. The TCN/ILS page is

selected by verifying the CNI page is displayed on

the DED and then depressing the TILS function

button on the upfront controls. The DED displays

information about three TACAN items: operating

mode, channel number, and band. The operating

mode is displayed (REC, T/R, or A/A TR) and may be

changed by positioning the DCS to SEQ until the

desired mode is displayed. Channel (1126) and

band (X or Y) may be changed within the scratchpad

with the keyboard.
Channels are selected by keying in the desired

number on the scratchpad and then depressing the

ENTR button. Asterisks remain about the

scratchpad after channel change. TACAN band is

selected by keying zero in the scratchpad and then

depressing the ENTR button. The asterisks remain

about the scratchpad after band change.

TERRAIN FOLLOWING RADAR (TFR)

SYSTEM

The TFR system provides manual TF and ATF

capability. In manual TF, the NVP provides pitch

steering cues via the HUD. In ATF, climb/dive

commands are calculated in the NVP and sent to the

FLCS to maintain a selectable clearance above the

terrain.
Refer to T.O. GR1F16CJ3411 for expanded TFR

system description, operating procedures, and

operating limitations.

AIFF SYSTEM

The AIFF system provides selective identification

feature (SIF), automatic altitude reporting, and

encrypted mode 4 IFF. Normal operation is possible

in any of six modes:

Mode 1-Security identity.

Mode 2-Personal identity.

Mode 3/A-Traffic identity.

Mode 4-Encrypted identity.

Mode C-Altitude reporting.

Mode S-

PX II

Data Link (Surveillance mode),

PX III

Air traffic control data link (includes mode

3/A and C functions).

T.O. GR1F16CJ1

1201

AIFF TRANSPONDER

PX II

The transponder only transmits coded replies to

correctly coded interrogations. Backup control is

provided for mode 4 and EMER functions. Refer to

AUX COMM PANEL, this section, for functions of

IFF MASTER knob and mode 4 backup controls. In

the event of certain failures of upfront controls, IFF

modes 1 and 3/A may continue to reply on the last

codes selected prior to failure.

Modes 2 and C, if selected prior to failure, may

continue to reply. However, when the CNI knob is

placed in BACKUP, modes 1, 2, 3/A, C, and S are

disabled except when the IFF MASTER knob is in

EMER. Mode C provides altitude information from

the CADC in 100foot increments. The AIFF

transponder also provides for selection of manual or

automatic operation. If the automatic function is

selected, IFF operation can be programmed to:

Turn modes on or off when a certain position is

reached.

Change codes when a specific time is reached.

Turn modes on or off when a certain position is

reached and changes codes when specific time is

reached.

If the automatic position switching mode is

selected, two mode groups are available. Mode

groups contain selection status and position

criteria that determine where a selected group

becomes active. Mode groups are designated 1 or 2.

Mode groups may be preprogrammed via the DTE or

manually.

If the automatic time switching mode is selected, six

code groups for IFF modes 1, 3/A, 4, and S are

available. Code groups (16) designate the codes for

the four IFF modes and a time when the selected

code group becomes active. Code groups may be

preprogrammed via the DTE or manually.

AIFF TRANSPONDER

PX III

The transponder only transmits coded replies to

correctly coded interrogations. Backup control is

provided for modes 1, 3/A, S, and 4 and EMER

functions. Refer to IFF CONTROL PANEL, this

section, for functions of IFF MASTER knob and

modes 1, 3/A, S, and 4 backup controls. In the event

of certain failures of upfront controls, IFF modes 1, 2,

and 3/A may continue to reply on the last codes

selected, if modes are selected prior to failure. Mode

C, if selected prior to failure, may continue to reply.

When the C&I knob is placed in BACKUP, modes 2

and C are disabled. Modes 1, 3/A, 4, and S can be

enabled via switches on the IFF control panel. When

the C&I knob is placed in UFC, all modes are

automatically enabled. Mode C provides altitude

information from the CADC in 100foot increments.

The AIFF transponder also provides for selection of

manual or automatic operation. If the automatic

function is selected, IFF operation can be

programmed to:

Turn modes on or off when a certain position is

reached.

Change codes when a specific time is reached.

Turn modes on or off when a certain position is

reached and change codes when a specific time is

reached.

IFF modes may be selected and programmed for use

in groups. Mode groups contain selection status and

position criteria that determine where a selected

group becomes active. Mode groups are designated 1

or 2. Mode groups may be preprogrammed via the

DTE or manually by placing the DED asterisks

around the scratchpad and entering the desired data

using the ICP/IKP keys.

If the automatic time switching mode is selected, six

code groups for IFF modes 1, 3/A, and 4 are available.

Code groups (16) designate the codes for the three

IFF modes and a time when the selected code group

becomes active. Code groups may be preprogrammed

via the DTE or manually by placing the DED

asterisks around the scratchpad and entering the

desired data using the ICP/IKP keys.

Operation of the Transponder on Upfront

Controls

PX II

When the IFF MASTER knob, located on the AUX

COMM panel, is placed to LOW or NORM and the

CNI knob is in UFC, the AIFF transponder is

controlled by the upfront controls. The IFF page is

selected by depressing the IFF override button on

the upfront controls. The IFF page displayed

depends on the mode/code switching function last

selected; i.e., the MAN page is displayed if manual

function was last selected. IFF pages are accessed

by placing the DCS to SEQ. Information is

displayed on the IFF pages in four lines (lines one,

three, four, and five). Refer to CNI READOUT/DED

PAGE SUMMARY, this section.

T.O. GR1F16CJ1

1202

The first line displays IFF and power status (OFF,

STBY, or ON). The next area displays MAN for

manual IFF operation or AUTO for automatic IFF

operation. If POS page is selected, the label POS is

displayed in the next area of line one. The next area

displays the selected mode group (1 or 2). The area at

the far right displays two items: the label TIM is

displayed if TIM is selected; the selected code group

(16) for the IFF modes 1, 3/A, 4 and S is displayed

next to the TIM label.

Line three displays four items. M1 is displayed at the

far left. Displayed with the M1 label is the twodigit

mode 1 code. The next area displays the MC label and

a 5. MC represents IFF mode C, and it is highlighted

when mode C is selected (MAN and POS only). The 5

represents the ICP/IKP key that provides selection of

mode C if the ICP/IKP key is entered by the

scratchpad. The area at the far right displays the

scratchpad, which is displayed only when values are

being keyed in. The scratchpad provides on/off control

for each of the six IFF modes, code control for modes

1, 2, 3/A, 4 and S, and monitoring control for mode 4.

Line four displays five items. The first area at the left

displays the M2 label, representing mode 2, and

enterable mode 2 code (MAN only). The second area

displays M4 and an A or a B. M4 represents mode 4.

A or B indicates the two mode 4 codes. The third area

displays a 6, which represents the ICP/IKP key that

alternates selection of the mode 4 code (A or B). The

fourth area displays the criteria used for position

switching or time switching. This area displays a

direction (N, S, E, or W), the fixed label OF, and a

destination number (125) (POS only) or a time

(HH:MM) (TIM only).

Line five displays data concerning IFF modes 3/A and

4 (MAN only) and S. The first area displays the label

M3 and the enterable fourdigit mode 3/A code. The

second area displays mode 4 monitoring modes (OUT,

LIT, AUTO). The third area displays a 7, which

represents the ICP key that rotates selection of mode

4 monitoring (MAN only). The fourth area displays

the label MS and an 8, which represents the ICP key

that rotates selection of mode S.

IFF manual mode switching is accomplished by

verifying the IFF MAN page. With asterisks

positioned about the scratchpad, depress appropriate

ICP/IKP key and depress ENTR. ICP/IKP keys

represent the following:0, 8, and 9 are invalid

(scratchpad flashes); 1 for mode 1 selection; 2 for

mode 2; 3 for mode 3/A; 4 for mode 4; 5 for mode C; 6

for mode 4 A/B code; 7 for mode 4 monitoring (OUT,

LIT, or AUD); 8 for mode S selection; two digits (mode

1 code); 2 plus four digits (mode 2 code); three or four

digits (mode 3/A code).

IFF automatic switching is accomplished on the IFF

AUTO pages. IFF AUTO pages are accessed by

placing DCS to SEQ. To select AUTO POS or AUTO

TIM switching functions, position asterisks about the

POS and/or the TIM labels and depress the MSEL

button. If AUTO POS switching function is selected,

only position and mode criteria is displayed. Labels

(6) (mode 4 codes) and (7) (mode 4 audio monitor

function) are removed and mode 4 A/B codes are not

modifiable. The scratchpad is reduced to one digit

(mode numbers only). The mode group number is

displayed on the page and is highlighted when that

mode group is active. The DCS provides access to the

different mode groups by positioning the switch to

INC or DEC. Sequencing to a different mode group

does not affect the active squawks.

If AUTO TIM switching function is selected, only time

and code criteria is displayed. Labels (5) (mode C is

not modifiable from this page) and (7) (mode 4 audio

monitor), and (8) (mode S) are removed. Mode 2 codes

are not displayed (only modifiable from the IFF MAN

page). The code group number is displayed on the

page and is highlighted when that code group is

active. The DCS provides access to the different code

groups by positioning the switch to INC or DEC.

Sequencing to a different code group does not affect

the active squawks.

If the FCC fails, only IFF manual mode is available.

Operation of the Transponder on Upfront

Controls

PX III

Refer to figure 177. When the IFF MASTER knob,

located on the IFF control panel, is placed to LOW or

NORM and the C&I knob is in UFC, the AIFF

transponder is controlled by the upfront controls. The

IFF page is selected by depressing the IFF override

button on the upfront controls. Information is

displayed on the IFF pages in five lines.

The first line displays IFF and power status (OFF,

STBY, DEGR, or ON). The next area displays MAN

for manual IFF operation or AUTO for automatic IFF

operation. The third area displays POS for position

switching and a two state mode group or TIM for time

switching and a six state Code group.

Line two is blank.

T.O. GR1F16CJ1

1203

Line three displays four items. The first area at the

left displays M1 and the enterable mode 1 code (MAN

and TIM pages only). The second area displays M4

and an A or a B (MAN and TIM pages only). M4

indicates that mode 4 is selected. A or B indicates the

two mode 4 codes. The third area displays a 6, which

represents the ICP/IKP key that alternates selection

of the mode 4 code (A or B). The area at the far right

displays the scratchpad, which is displayed only

when values are being keyed in, provides on/off for

each of the six IFF modes, code control for modes 1, 2,

3/A, and 4, and monitoring control for mode 4.

Line four displays five items. The first area at the left

displays M2 and the enterable mode 2 code (MAN

page only). The next area displays MC and 5. MC

represents IFF mode C, and it is highlighted when

mode C is selected (MAN and POS pages only). The 5

represents the ICP/IKP key that provides selection of

mode C via the scratchpad. The fourth area displays

the criteria used for position switching. This area

displays a direction (N, S, E, or W), the fixed label OF,

and a destination number (125) (POS page only).

Line five displays five items. The first area displays

M3 and the enterable mode 3/A code (MAN and TIM

pages only). The second area displays mode 4

monitoring modes (MAN page only). The third area

displays a 7, which represents the ICP/IKP key that

rotates selection of mode 4 monitoring. The fourth

area displays MS. The fifth area displays an 8, which

represents the ICP/IKP key that provides selection of

mode S via the scratchpad.

The initial IFF page display is always MAN. IFF

pages are accessed by placing the DCS to SEQ. IFF

manual mode switching is accomplished by verifying

the IFF MAN page is selected. With asterisks

positioned about the scratchpad, depress appropriate

ICP/IKP key and depress ENTR. ICP/IKP keys

represent the following:0 and 9 are invalid

(scratchpad flashes); 1 for mode 1 selection; 2 for

mode 2; 3 for mode 3/A; 4 for mode 4; 5 for mode C; 6

for mode 4 A/B code; 7 for mode 4 monitoring (OUT,

LIT, or AUD); 8 for mode S selection; any two digits

(mode 1 code); three or four digits (mode 3/A code); 2

followed by 4 digits (mode 2 code). IFF automatic

switching is accomplished on the POS and TIM pages.

These pages are accessed by placing DCS to SEQ. To

select AUTO POS or AUTO TIM switching functions,

place DCS to SEQ to display the POS and TIM pages.

If AUTO POS switching function is selected, only

position and mode criteria are displayed.

The scratchpad is reduced to one digit (mode numbers

only). The active mode group is displayed on the page

and is highlighted when that code is active. The DCS

provides access to the different mode groups by

positioning the switch to INC or DEC. Sequencing to

a different mode group does not affect the active

squawks. If AUTO TIM switching function is

selected, only time and code criteria are displayed.

The active code group is displayed on the page and is

highlighted when that code is active. The DCS

provides access to the different code groups by

positioning the switch to INC or DEC. Sequencing to

a different code group does not affect the active

squawks.

AIFF INTERROGATOR

The interrogator provides selective interrogation of

IFF systems along a lineofsight (LOS) or within a

specific scan area. For a specific scan area, the

interrogator may be selectively coupled or decoupled

with the FCR. Refer to T.O. GR1F16CJ3411 for

details.

Location and classification of a particular IFF system

as a friend or unknown is possible by comparison SIF

codes. During interrogation, the interrogator is

commanded to the modes 1, 2, 3/A, 4 (A or B) code,

PX II

and C as programmed via the DTE or manually

entered using the scratchpad. The mode 4 (A/B)

interrogator code is independent of the mode 4 (A or

B) transponder code as displayed on the CNI

interrogator (INTG) page.

Control of the interrogator is accomplished via the

PX II

AUX COMM,

PX III

IFF control panel,

PX II

the

MISC panel, the

PX II

UHF VHF IFF transmit,

PX III

target management switch, the INTG page, and the

MFDS FCR display. Interrogation of other IFF

systems is possible when in any one of

PX II

five,

PX III

four modes:

Mode 1 - Security identity.

Mode 2 - Personal identity.

Mode 3/A - Traffic identity.

Mode 4 - Encrypted identity.

PX II

Mode C - Altitude reporting.

T.O. GR1F16CJ1

1204

Operation of the Interrogator on Upfront

Controls

PX II

Selecting the INTG page displays and commands

the interrogator to the same mode 1, 2, 3/A, and 4

(A/B) codes as the transponder mode 1, 2, 3/A, and 4

(A/B) codes. The interrogator continues to use the

same codes until modified via the scratchpad. The

scratchpad is displayed only when data is keyed in and

provides on/off control for each of the five IFF modes

and enterable code control for modes 1, 2, 3/A, and 4.

After modification, the interrogator operates indepen

dently of the transponder mode codes. The interroga

tor is commanded back to the current transponder

mode 1, 2, 3/A, and 4 (A/B) codes via the scratchpad or

by entering the ICP/IKP 7 key via the scratchpad. The

INTG page displays its data on four lines (lines one,

three, four, and five).

The first line displays INTG and the interrogator

power status (ON/OFF) The next area displays the

coupled (CPL) or decoupled (DCPL) status with the

FCR. The area on the right displays the current

selected steerpoint. For CPL and DCPL detailed

description, refer to T.O. GR1F16CJ3411.

The third line displays M1 and enterable mode 1

interrogation code, MC and 5, and the scratchpad. The

5 represents the ICP/IKP key that provides mode C

interrogation when entered by the scratchpad.

The fourth line displays M2 and enterable mode 2

interrogation code, M4 and selectable mode 4 A/B code

and 6. The 6 represents the ICP/IKP key that provides

selection of mode 4 A/B interrogation when entered by

the scratchpad.

The fifth line displays M3, mode 3/A interrogation

code, RST, and 7. The 7 represents the ICP/IKP key

that resets the interrogator modes and codes to match

the active transponder modes and codes when entered

by the scratchpad.

Operation of the Interrogator on Upfront

Controls

PX III

Selecting either the SCAN INTG page or the LOS

INTG page displays the corresponding interrogator

mode 1, 2, 3/A, and 4 (A/B) codes. After a DTU load for

IFF codes, the SCAN and LOS interrogator mode 1,

2, 3/A, and 4 (A/B) codes are the same as the

transponder mode 1, 2, 3/A, and 4 (A/B) codes. Modes

and codes selected for SCAN are independent of the

modes and codes selected for LOS. The interrogator

continues to use the same codes until modified via the

scratchpad. For a detailed description, refer to T.O.

GR1F16CJ3411.

AIFF CONTROLS AND INDICATORS

IFF IDENT Button

Refer to figure 183. The IFF IDENT button, located on

the instrument panel, provides the primary method of

initiating the identification of position (I/P) function of

the IFF system. Pushing the button momentarily

causes the I/P timer to energize for 1530 seconds. If a

PX II

mode 1, 2, 3/A, or S,

PX III

mode 3/A

interrogation is recognized within this 1530 second

period, I/P replies are made.

IFF (Mode 4) Caution Light

The IFF (mode 4) caution light, located on the caution

light panel, indicates that the IFF system was

interrogated on mode 4 and is unable to respond

because the mode 4 codes (A and B) are zeroized or not

coded, mode 4 is not enabled, or the RF switch is in

QUIET or SILENT.

UHF VHF IFF Transmit Switch

PX II

The UHF VHF IFF transmit switch, located on the

throttle, provides control of the area for interrogation

(LOS or scan). For a detailed description, refer to T.O.

GR1F16CJ3411.

1. IFF IDENT Button

GR1F-16CJ-1-0082A37

IFF IDENT Button

(Typical)

C DF

PX III

PX II

Figure 183.

T.O. GR1F16CJ1

1205

Target Management Switch

PX III

The target management switch, located on the stick,

provides control of the area for interrogation (LOS or

scan). For a detailed description, refer to T.O.

GR1F16CJ3411.

INSTRUMENT LANDING SYSTEM (ILS)

The ILS provides precision approaches to runways

equipped with localizer, glide slope, and marker

beacon equipment. Localizer identification signals

are supplied to the headset for station identification.

The glide slope and localizer receivers supply glide

slope and localizer deviation data to the deviation

bars on the ADI and HUD; the HSI also displays

course or localizer deviation data. Two warning flags,

designated LOC and GS, appear on the ADI when

deviation data is invalid. A course deviation warning

flag appears on the HSI if localizer deviation data is

invalid. HUD symbology consists of localizer and

glide slope deviation bars. Dashed deviation bars

indicate invalid data. Deviation bars are roll

stabilized with tic marks positioned at the onedot

and twodot deflections.

The symbology automatically displayed on the HUD

with ILS selected is the same as LG down with the

following exceptions:

The great circle steering symbol is replaced by the

ILS deviation bars.

The lower HUD windows, except distancetodes

tination, are not blanked unless the NLG is lowered

and inertial velocity exceeds 80 knots.

The HUD altitude scale does not change from

100foot increments to 20foot increments until

NLG is lowered.

AOA bracket is not displayed until NLG is lowered.

The flight director displays command steering data

on the HUD when selected on the upfront controls.

Command steering symbology consists of a circle, a tic

mark positioned at the top of the circle, and a

reference mark/caret positioned at the heading/

ground track scale. The flight director circle is

referenced to the FPM and appears when localizer

data is valid. Proper use of the flight director requires

that the localizer be intercepted from a heading no

more than 45 degrees from the localizer course using

bank angles of 30 degrees or less. When the aircraft

is within two dots deflection of the localizer deviation

bar, the flight director commands a turn to roll out on

the localizer course. The tic mark appears on the

flight director circle when glide slope deviation nears

center, indicating that pitch steering data is valid.

The glide slope should be intercepted from a position

that is wings level and on the localizer course. If the

pitch steering becomes invalid, the symbol X appears

over the tic mark. The reference caret indicates the

heading required to maintain the course selected on

the DED (magnetic heading scale displayed) or

ground track error relative to the course selected

(magnetic ground track scale displayed). The course

value may be changed only by entering the new value

through the DED.

The ILS flight director is designed to intercept the

glide slope from below while in approximately level

flight. If the aircraft approaches the glide slope from

above, there is no pitch steering data. The flight

director symbol remains on the horizon, displaying

bank steering data, and the symbol X appears over

the tic mark, indicating that pitch steering data is

invalid. Valid pitch steering is provided after the

glidepath is intercepted.

The marker beacon receiver operates on a fixed

frequency of 75 MHz. Refer to MRK BCN LIGHT, this

section.

ILS Controls

The ILS power knob, located on the AUDIO 2 panel,

controls ILS power and audio volume. The ILS

presentation on the HSI and ADI is controlled by the

CRS set knob (HSI) and INSTR MODE knob. All

other control functions are selected by the upfront

controls. There are no backup controls. In the event

of certain upfront control failures, the ILS may

remain on the last frequency selected prior to failure.

T.O. GR1F16CJ1

1206

Operation of the ILS on Upfront Controls

The ILS is controlled by the upfront controls when

the ILS power knob on the AUDIO 2 control panel is

placed to on (cw). The ILS page is selected by

verifying the CNI page is displayed on the DED and

then depressing the TILS function button. Com

manded (OFF or ON) ILS status and three

changeable items appear:the ILS frequency, the

localizer course for the ILS flight director cues on the

HUD, and the selection of the flight director (CMD

STRG). The asterisks initialize over the scratchpad

when the TCN/ILS page is selected. The ILS

frequency is changed by insuring that the asterisks

are over the scratchpad, keying in the desired

frequency, and then depressing the ENTR button.

The asterisks then automatically step to the ILS

course for course entry. The flight director is

selected/deselected by positioning the asterisks

about the CMD STRG label and depressing the

MSEL button. (The flight director is automatically

selected at ILS power up.) Positioning the INSTR

MODE knob to one of the ILS positions is required

before ILS deviation data (localizer and glide slope)

can be displayed on the HSI, HUD, and ADI.

Three steps are required before the ILS flight director

(command steering) HUD cues are usable: the

localizer course is displayed on the DED, the flight

director is modeselected on the upfront controls, and

an ILS mode is selected with the INSTR MODE knob.

The course setting on the HSI is not connected to the

flight director in the HUD. For consistent ILS

displays, the inbound localizer course should be set on

both the DED and the HSI.

MRK BCN Light

Refer to figure 13. The MRK BCN light is located on

the instrument panel. When the aircraft is over a

marker beacon facility, the light illuminates green

and blinks according to the code of the marker beacon.

INSTR MODE SELECT PANEL

Refer to figure 184. The INSTR MODE select panel,

located on the instrument panel, provides for the

selection of the displays on the HSI and the ADI.

INSTR HDG Knob

Refer to figure 184. The INSTR HDG knob, located

on the INSTR MODE select panel, has arrows

pointing in cw and ccw directions. The knob is pushed

and turned to set the INS heading to a known

magnetic heading in the event of an INS failure

(indicated by the AUX warning flag on the ADI).

INSTR MODE Knob

Refer to figure 185 for functions and details of the

INSTR MODE knob, located on the INSTR MODE

select panel. Refer to figure 186 for details of the ADI

and HSI in the instrument modes.

Navigation Aids and Display

Refer to figure 185.

Instrument Modes

Refer to figure 186.

GR1F-16CJ-1-0083X37

2. INSTR HDG Knob

INSTR MODE Select

Panel (Typical)

C DF

1. INSTR MODE Knob

Figure 184.

T.O. GR1F16CJ1

1207

GR1F-16CJ-1-0084A37

Navigation Aids and Display (Typical)

HSI

DED

ADI

AUDIO 2 CONTROL

PANEL

AUX COMM PANEL

AUDIO 2 CONTROL

PANEL

INSTR

MODE

SELECT

PANEL

(IMSP)

HUD/ICP

INSTRU-

MENT

MODE

SELECTED

RANGE

INDICATOR

COURSE

ARROW &

COURSE

SELECTED

COURSE

DEVIATION

INDICATOR

TO FROM

INDICATOR

BEARING

POINTER

ATTI-

TUDE

SPHERE

LOCALIZER

DEVIATION

BAR

GLIDE

SLOPE

DEVIATION

BAR

IMSP

HSI

ADI

ILS/TCN

TCN

NAV

ILS/NAV

RANGE TO

TACAN

STATION

OR DME

NAV AID

RANGE

TO EGI/INS

DESTINA-

TION

MANUALLY

SELECTED

LOCALIZER

COURSE

MANUALLY

SELECTED

COURSE

MANUALLY

SELECTED

LOCALIZER

COURSE

LOCALIZER

DEVIATION

FROM

SELECTED

COURSE

LOCALIZER

DEVIATION

OUT OF

VIEW

IN VIEW

OUT OF

VIEW

BEARING

TO TACAN

STATION

BEARING

TO EGI/INS

DESTINA-

TION

EGI/INS

ROLL

AND

PITCH

ATTI-

TUDE

GLIDE

SLOPE

DEVIATION

GLIDE

SLOPE

DEVIATION

OUT OF

VIEW

OUT OF

VIEW

LOCALIZER

DEVIATION

LOCALIZER

DEVIATION

MRK BCN

PX II

IFF CONTROL PANEL

PX III

Figure 185.

T.O. GR1F16CJ1

1208

ADI

HSI

EGI/INS PITCH AND

ROLL ATTITUDE

The TCN mode has no effect

on HUD symbology.

GR1F-16CJ-1-0085A37

ADI

HSI

INS/EGI PITCH AND

ROLL ATTITUDE

The NAV mode has no effect

on HUD symbology.

NAV

TCN

Instrument Modes (Typical)

BEARING TO INS/EGI

DESTINATION

HEADING REFERENCE MARKER

MANUALLY SELECTED

(OUT OF VIEW)

RANGE TO INS/EGI

DESTINATION

TO-FROM INDICATOR

COURSE

EGI/INS MAGNETIC HEADING

SIGNAL UNRELIABLE

EGI/INS MAGNETIC HEADING

MANUALLY SELECTED

COURSE

BEARING TO TACAN

STATION

HEADING REFERENCE MARKER

MANUALLY SELECTED

TO-FROM INDICATOR

COURSE

TACAN COURSE SIGNAL

UNRELIABLE

EGI/INS MAGNETIC HEADING

MANUALLY SELECTED

COURSE

RANGE TO TACAN

STATION OR DME

NAV AID

INSTR MODE

SELECT PANEL

(IMSP)

INSTR MODE

SELECT PANEL

(IMSP)

DEVIATION FROM

SELECTED COURSE

DEVIATION FROM

SELECTED COURSE

NOTE:

Figure 186.(Sheet 1)

T.O. GR1F16CJ1

1209

ADI

INSTR MODE

SELECT PANEL

LOCALIZER

DEVIATION

GLIDE SLOPE

DEVIATION

GR1F-16CJ-1-0086A37

NOTES:

LOCALIZER SIGNAL

UNRELIABLE

GLIDE SLOPE

SIGNAL

Glide slope and localizer

bars indicate deviation

only, not steering.

Command steering is

referenced to the

localizer course

displayed on the DED.

UNRELIABLE

(IMSP)

INS PITCH AND

ROLL ATTITUDE

HSI

HEADING REFERENCE MARKER

MANUALLY SELECTED

(OUT OF VIEW)

TO-FROM INDICATOR

COURSE

ILS LOCALIZER SIGNAL

UNRELIABLE

INS MAGNETIC HEADING

MANUALLY SELECTED

COURSE

BEARING TO TACAN

STATION

ILS/TCN

Instrument Modes (Typical)

LOCALIZER

DEVIATION

HUD

GLIDE SLOPE

DEVIATION

AOA BRACKET

(NLG LOWERED)

CALIBRATED

AIRSPEED

FLIGHTPATH

MARKER (FPM)

INS MAGNETIC HEADING

SELECTED COURSE

( CROSSWIND COMPONENT)

(LIMITED)

RADAR ALTITUDE

ALTITUDE LOW

SETTING

PITCH SCALE (DIVE)

BAROMETRIC ALTITUDE

150

06 065 07

02,2

02,100

02,0

R 01,450

AL 200

PITCH SCALE (CLIMB)

LOCALIZER

DEVIATION

RANGE TO TACAN

STATION OR DME

NAV AID

HORIZON LINE

ROLL SCALE

COMMAND STEERING

(CMD STRG)

DISTANCE TO STEERPOINT/

STEERPOINT NUMBER

150 03

PX II

Figure 186.(Sheet 2)

F16C/D. FLIGHT MANUAL (2002) - page 14

F16C/D. FLIGHT MANUAL (2002) - page 14