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T.O. GR1F16CJ1 72 F PX II With certain failures of the INS with ILS selected, a fixed aircraft reference symbol is displayed at zero degrees azimuth, 11 degrees below the boresight symbol. This symbol is for ILS deviation reference in conjunction with the horizontal and vertical deviation bars. The aircraft reference symbol should not be used for attitude reference. F Avoid touching the canopy transparen cy, canopy frame or placing arms on the canopy body positioning handles dur ing IMC. Contact may produce severe shock as a result of static discharge. NOTE F When rotating the HSI course setting from an eightunit digit to a nineunit digit (e.g., 018 to 019), the tens digit may rotate prematurely causing a 10degree reading error (e.g., 029). Crosscheck counter setting with course arrow reading to insure proper course setting. F Electrical transients (particularly during the EPU check) may cause the INS to revert to use of the last manually entered magnetic variation. Under these conditions, the accuracy of heading information displayed on the HSI and HUD depends upon the manual magnetic variation value entered. If magnetic heading error is suspected, confirm that automagnetic variation is in use or that the correct local magnetic variation is entered. F PX III The EGI does not use navigational aid assigned variation to compute course display for TACAN, VORTAC, VOR, or VORDME points retrieved from the database. Rather, the magnetic variation at the aircraft present position is used for course computation and display. HOLDING Holding airspeed is 200250 knots (maximum endurance airspeed recommended). PENETRATION Penetrations are normally flown at 300 knots, speed brakes as required, and throttle at IDLE. INSTRUMENT PATTERN/APPROACHES Refer to figure 71 for a typical TACAN holding, penetration, and approach. Refer to figure 72 for a typical GCA. Instrument patterns are normally flown at 200250 knots clean. Approaching final, lower the LG, slow the aircraft, and fly final approach at 13 degrees AOA maximum. MISSED APPROACH Advance throttle as required, close speedbrakes, and retract LG after a positive climb is established. Ad just throttle to maintain between 200250 knots. Pitch transients resulting from LG and TEF changes are mild and require minimum control compensation. TURBULENCE AND THUNDERSTORMS Avoid flight in turbulent air, hailstorms, and thunderstorms. There is a high probability of damage to airframe and components from impact ice, hail, and lightning. Thunderstorm penetration airspeed is 300 knots or optimum cruise airspeed, whichever is lower. At high airspeeds, personal discomfort and structural stress are greater. At slower airspeeds, controllability is reduced and inlet airflow distortion due to turbulence may cause compressor stall and/or engine stagnation. The GM mode of the radar can be used as an aid in navigation between or around storm cells. Refer to T.O. GR1F16CJ3411 for expanded information. If entry into adverse weather cannot be avoided, the following procedures should be used: 1. PROBE HEAT switch - Check PROBE HEAT. 2. FLOOD CONSOLES knob - HIGH INT. 3. ANTI ICE switch - ON. 4. Airspeed - 300 knots or optimum cruise, whichever is lower. NOTE Severe turbulence causes variations in airspeed and altitude. Do not change throttle setting except for extreme airspeed variations. |