757 MAINTENANCE MANUAL
E. Put the Airplane Back to Its Usual Condition
S 212-020
(1)
If the alternate system for the TE flaps is armed, make sure the position selector switch for the flap/slat alternate drive, on the P3 panel, and the position of the TE flaps are the same.
S 212-021
(2)
If the alternate system for the TE flaps is not armed, make sure the position of the flap control lever and the position of the TE flaps are the same.
S 862-022
(3)
If the manual override lever on the PDU bypass valve is in the No. 1 (bypass) position, put the manual override lever to the No. 2 position.
S 092-023
(4)
Remove the PDU lock from the TE flap PDU (Fig. 203).
S 862-024
(5)
Remove the DO-NOT-CLOSE tags, and close these circuit breakers on the P11 panel:
(a)
11B18, WARN ELEX B
(b)
11D31, HYDRAULICS PTU CONT
(c)
11J18, FLAP LOAD RELIEF
(d)
11J33, WARN ELEX A
S 862-025
(6)
Remove the circuit breaker lock and close this circuit breaker on the P11 panel:
(a)
11H23, FLAP/SLAT ALTN DR SHUTOFF ARM
S 862-026
(7)
Remove the circuit breaker locks, and close these circuit breakers on the P6 panel:
(a)
6D20, ALTN SLAT PWR
(b)
6D23, ALTN FLAP PWR
S 862-027
(8) Retract the flaps with normal hydraulic or alternate electric power in the Operation of the TE Flap System.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 412-028
WARNING: USE THE PROCEDURE IN AMM 32-00-15 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(9)
Remove the door locks from the landing gear doors and close the doors (Ref 32-00-15).
S 862-029
(10)
Remove the power from the left hydraulic system if it is not necessary (Ref 29-11-00).
S 862-030
(11)
Remove the electrical power if it is not necessary (Ref 24-22-00).
TASK 27-51-00-862-004
3. Operation of the TE Flap System
_______________________________
A. General
(1) During normal hydraulic operation, the TE flaps and LE slats move by the operation of the flap control lever.
During alternate electric operation, the TE flaps can move independently of the LE slats. If you arm the flap and slat alternate drives, you can control the TE flaps and the LE slats with the position selector switch for the flap/slat alternate drive. If you arm only the flap alternate drive, you can control only the movement of the TE flaps.
~............................................................................... | TABLE 201 | | Trailing Edge Flap System Data | ................................................................................. | Flap detent | | | | | | | | | position | UP | 1 | 5 | 15 | 20*[1] | 25 | 30*[2] | ................................................................................. | Flap Angle | 0° | 1° | 5° | 11° | 20° | 25° | 34° | ................................................................................. | % Travel | 0° | 10.32 | 51.85 | 70.46 | 80.41 | 88.13 | 100 | ................................................................................. | Ballnut Travel | | | | | | | | | (inches) *[3] | 0 | 1.67 | 8.39 | 11.40 | 13.01 | 14.26 | 16.18 | 2................…........…........…........…........…........…........…........1
*[1] TAKEOFF POSITION
*[2] LANDING POSITION
*[3] NO. 4 INBOARD FLAP, INBOARD BALLSCREW
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