27-41-08
ALL ú ú 01 Page 504 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
2) 7F22, LANDING GEAR DSP & CONT PRI
S 865-000
(8)
Do the "Put Safety-Sensitive Systems Back to the Condition Before Air Mode Simulation" task (AMM 32-09-02/201).
S 715-003
(9)
Do a test of the main electric limit switches on the left side with the landing gear extended:
(a)
Set the STAB TRIM 2 switch on the control stand to CUTOUT.
(b)
Use the STAB TRIM switches on the captain's control wheel to move the stabilizer to 7-8 units of trim.
(c)
Hold the STAB TRIM switches on the captain's control wheel to the NOSE DN until the stabilizer stops.
(d)
Set the STAB TRIM 3 switch on the control stand to CUTOUT.
(e)
Make sure the two stabilizer trim indicators show 0.55-1.05 units of trim.
(f)
Set the STAB TRIM 2 and 3 switches on the control stand to ON.
S 715-005
(10)
Do a test of the main electric limit switches on the right side with the landing gear extended:
(a)
Set the STAB TRIM 3 switch on the control stand to CUTOUT.
(b)
Use the STAB TRIM switches on the captain's control wheel to set the stabilizer at 7-8 units of trim.
(c)
Hold the STAB TRIM switches on the captain's control wheel to the NOSE DN until the stabilizer stops.
(d)
Set the STAB TRIM 2 switch on the control stand to CUTOUT.
(e)
Make sure the two stabilizer trim indicators show 0.55-1.05 units of trim.
E.
Put the Airplane to its Usual Condition
S 865-021
(1)
Use the STAB TRIM ALTN switches on the control stand to set the stabilizer at the neutral rig position (3 units of trim).
S 865-022
(2)
Release the pressure in the hydraulic systems No. 2 and 3 if it is not necessary (AMM 29-11-00/201).
S 865-023
(3)
If the electrical power is not necessary, remove electrical power (AMM 24-22-00/201).
(4)
Close the access door (AMM 06-09-05/201).
S 415-024
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