(c)
The system No. 2 AIR/GND relay is also wired in parallel with the ENG START-TO-STOP relays to provide power to the flight recorder system. This relay de-energizes when the airplane becomes airborne, resulting in a contact closure that provides an additional means to maintain power to the system during flight.
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A 757 MAINTENANCE MANUAL
(SHT 3)
(SHT 3)
TABLE 1
DATA TYPE
TE FLAP POSITION - RO SYNCHRO
TE FLAP POSITION - LO SYNCHRO
TE FLAP POSITION - RI LLDC
TE FLAP POSITION - LI LLDC
HORIZ STAB POSN SYNCHRO
RUDDER PEDAL POSN SYNCHRO
CONT WHEEL POSN SYNCHRO
CONT COLUMN POSN SYNCHRO
FLAP HANDLE POSN LLDC
APPLIED BRAKE PRESS - R MAIN ACVR 2
APPLIED BRAKE PRESS - R ALT ACVR 2
APPLIED BRAKE PRESS - L MAIN ACVR 2
APPLIED BRAKE PRESS - L ALT ACVR 2
SYNCHRO REF B REF
D04518
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TABLE 2DITS ADC
INPUT SOURCE L FCCTMCCLOCK (GMT)L DMER DMEEEC - L CHAN A OR CHAN BEEC - R CHAN A OR CHAN BG (SHT 3) L FMC BUS D
R ILS
L ILS
L RA
R RA
C RA
GPWC EFIS FCC - MCP
R - FMC BUS D
L - IRU EICAS H (SHT 3)
F(SHT 3) TABLE 3
DISCRETE
INPUT SOURCE
L YAW DAMPER ENGAGER YAW DAMPER ENGAGEL HF KEYR HF KEYL VHF KEYR VHF KEYC VHF KEYL STICK SHAKERR STICK SHAKERSPOILER 1L MODSPOILER 2L MODSPOILER 3L MODSPOILER 1R MODSPOILER 2R MODSPOILER 3R MODL OUT SLATS EXTL IN SLATS EXTSLATS ALL FULLSLATS AGREER OUT SLATS EXTR IN SLATS EXTSLATS ALL PARTL TRIM UPL TRIM DOWNR TRIM UPR TRIM DOWN
DISCRETE=1PWR
GND
OPEN XX
XXXXXXX
X
X
X
X
X
X
XXXXXXX XXXX
TABLE 3 (CONT)DISCRETE
DISCRETE=1INPUT SOURCEPWR GND OPEN EVENT MARKERX
EICAS CMPTR SEL R
LNOSE GEAR SQUAT SWX L GEAR TILTED X R GEAR TILTED X IN AIR X L BRAKE PEDAL X R BRAKE PEDAL X NOSE GEAR DN/LOCKEDXR GEAR DN/LOCKED XLDG GEAR LEV UP X LDG GEAR LEV DN XL ADC SW POS XR ADC SW POS XL EFIS SW POS XL FMC SW POS XR FMC SW POS XL IRS SW POS XR IRS SW POS XR EFIS SW POS XMIDDLE MARKER XOUTER MARKER XINNER MARKER X L ENG START XR ENG START X DFDR BITE X L ENG START VALVE XR ENG START VALVE XAPU START XCAPT'S MASTER WARNING XF/O'S MASTER WARNING X
429
XMTR
L AIR DATA CMPTR
28V DCL BUS FLT REC DC
P11
429
XMTR
L ELEX FLT INSTRSYS SYM GEN
L EFI INSTRSOURCE SEL SW
429
XMTR
L EICAS CMPTR
429
XMTR
R ADC I FLT REC ADC I/P SW
429
CAPT ADC INSTR XMTR
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本文链接地址：757 AMM 飞机维护手册 仪表 CHAPTER 31 - INSTRUMENTS 1(48)
