(12)
Open LRRA-1 and LRRA-2 system circuit breakers, to simulate a radio altitude above 2500 feet on LRRA-1 and LRRA-2 respectively.
(13)
Place the TURB/SPEED switch on the A/P-F/D MSP to the PMS position and verify that the switch remains in the selected position.
(14)
Verify that the A/T amber warning light flashes, on the Captain's and on the F/O's flight mode annunciators (FMA's).
(15)
Place the A/T engage switch on the A/P-F/D MSP to the ON position. Verify that the A/T amber warning light extinguishes, on both FMA's.
(16)
Place the A/T engage switch to OFF. Verify that the A/T red warning light flashes, on both FMA's. Reset (extinguish) the red warning lights by returning the A/T engage switch to ON.
(17)
Push the A/T disconnect switch on throttle lever No. 1. Verify that the A/T red warning light flashes, on both FMA's. Reset (extinguish) the red warning lights by pressing the disconnect switch again. Verify that the A/T amber warning light flashes, on both FMA's.
(18)
Place the A/T engage switch to the ON position. Verify that the A/T amber warning light extinguishes, on both FMA's.
(19)
Push the A/T disconnect switch on throttle lever No. 4. Verify that the A/T red warning light flashes, on both FMA's. Reset (extinguish) the red warning lights by pressing the warning light assembly on either the Captain's FMA or the F/O's FMA. Verify that the A/T amber warning light flashes, on both FMA's.
(20)
Place the A/T engage switch to the ON position. Verify that the A/T amber warning light extinguishes, on both FMA's.
(21)
Ensure that the following switches on the A/P-F/D MSP are in the positions shown.
TURB/SPEED switch to PMS.
A/T engage switch ON.
(22) Close LRRA-1 system circuit breaker. Verify that the TURB/SPEED switch and the A/T engage switch both drop to the OFF position. Verify that the A/T red warning lights flash, on both FMA's.
EFFECTIVITY
AIRPLANES WITH PMS 11 Page 545 Apr 25/89
34-62-00
(23)
Reset (extinguish) the A/T red warning lights by pressing an A/T disconnect switch on the throttle levers.
(24)
Open LRRA-1 system circuit breaker.
(25)
Return the following switches on the A/P-F/D MSP to the positions shown.
TURB/SPEED switch to PMS.
A/T engage switch to ON.
(26)
Close LRRA-2 system circuit breaker. Verify that the TURB/SPEED switch and the A/T engage switch both drop to the OFF position. Verify that the A/T red warning lights flash, on both FMA's.
(27)
Reset (extinguish) the A/T red warning lights by pressing an A/T disconnect switch on the throttle levers.
(28)
Open LRRA-2 system circuit breaker.
(29)
Return the Captain's and F/O's FLT DIR switches, on the A/P-F/D MSP, to the OFF position.
(30) If the PMS is no longer required, restore airplane to normal. AM. Throttle Retard and Pitch Down Command (IB Airplanes)
(1) If required prepare for test as described in paragraph D.
(2) Ensure that all engines are not operating.
(3) Ensure that the trailing edge (TE) flaps and the leading edge (LE)
flaps are retracted to the full up position.
NOTE: For trailing edge flap operation refer to 27-51-00,____
Maintenance Practices. For leading edge flap operation refer
to 27-81-00, Maintenance Practices.
(4) Open LRRA-1 and LRRA-2 system circuit breakers to simulate a
radio altitude above 2500 feet, on LRRA-1 and LRRA-2 respectively.
(5) Ensure that present position latitude and longitude coordinates
are entered into each INS (Refer to 34-41). Verify that the mode
selector switch, on each INS MSU, is set to ALIGN.
(6) Ensure that gross weight of airplane is entered into the PMS.
(7) Select CRZ limit mode on the PMS limit select panel (LSP). Verify
that the PMS limit indicator (LI) displays CRZ and some value of
EPR limit (no dashes or blank display) indicating a valid EPR limit
condition.
(8) Verify that the Captain's and F/O's FLT DIR CMPTR select switches
are set to 'A'.
(9) Place the following switches on the A/P-F/D MSP to the positions
shown:
Captain's and F/O's FLT DIR switches to ON.
TURB/SPEED switch to PMS
Auto Throttle (A/T) Engage switch to ON
EFFECTIVITY 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航4(159)
