(m)
Set the STAB TRIM 3 switch to CUTOUT.
(n)
Make sure the "B" dimension is 4.71 |0.60 inches
(119.6 |15.2 millimeters).
(o) Make sure the stabilizer position indicators show
1.80 | 0.25 units of trim.
(p)
Set the STAB TRIM 3 switch to ON.
(q)
Hold the STAB TRIM ALTN switches to APL NOSE DN until the stabilizer stops.
(r)
Set the STAB TRIM 3 switch to CUTOUT.
(s)
Make sure the "B" dimension is 1.22 +/- 0.33 inches (31.0 +/-
8.4 millimeters).
(t) Make sure the stabilizer trim position indicators show
0.25 | 0.25 units of trim.
S 865-080
(5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7, Overhead Circuit Breaker Panel
1) 7F22, LANDING GEAR DSP & CONT PRI
2) 7F23, LANDING GEAR DSP & CONT ALTN
S 865-081
(6)
Do the "Put Safety-Sensitive Systems Back to the Condition Before Air Mode Simulation" task (AMM 32-09-02/201).
H.
Do a Test for the Travel Limits of the First Officer's Stabilizer Trim with the Landing Gear Retraction Simulated
(1)
Make sure the leading edge flaps are retracted (AMM 27-81-00/201).
S 865-082
S 865-102
WARNING: YOU MUST CAREFULLY FOLLOW THE STEPS IN THE REFERENCED TASK TO
_______ PREPARE THE SAFETY SENSITIVE SYSTEMS FOR THE AIR MODE. FAILURE TO FOLLOW THE STEPS CORRECTLY CAN CAUSE THE AUTOMATIC OPERATION OF THE AIRPLANE SYSTEMS. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Do the "Prepare Safety-Sensitive Systems for Air Mode Simulation" task (AMM 32-09-02/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-084
(3)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7, Overhead Circuit Breaker Panel
1) 7F22, LANDING GEAR DSP & CONT PRI
2) 7F23, LANDING GEAR DSP & CONT ALTN
S 735-039
(4)
Do a test for the travel limits of the first officer's stabilizer trim with the landing gear retraction simulated:
(a)
Set the STAB TRIM 2 switch to ON and the STAB TRIM 3 switch to CUTOUT.
(b)
Hold the STAB TRIM switches on the first officer's control wheel to the NOSE UP position until the stabilizer stops.
(c)
Set the STAB TRIM 2 switch to CUTOUT.
(d)
Make sure the "B" dimension is 26.91 +/- 0.60 inches (683.5 +/-
15.2 millimeters).
(e)
Make sure the stabilizer position indicators show 11.60 | 0.25 units of trim.
(f)
Set the STAB TRIM 2 switch to ON.
(g)
Hold the STAB TRIM ALTN switches to the APL NOSE UP position until the stabilizer stops.
(h)
Set the STAB TRIM 2 switch to CUTOUT.
(i)
Make sure the "B" dimension is 34.03 +/- 0.33 inches (864.4 +/-
8.4 millimeters).
(j)
Make sure the stabilizer position indicators show 14.75 | 0.25 units of trim.
(k)
Set the STAB TRIM 2 switch to ON.
(l)
Hold the STAB TRIM switches on the first officer's control wheel to the NOSE DN position until the stabilizer stops.
(m)
Set the STAB TRIM 2 switch to CUTOUT.
(n)
Make sure the "B" dimension is 4.71 +/- 0.60 inches (119.6 +/-
15.2 millimeters).
(o)
Make sure the stabilizer position indicators show 1.80 | 0.25 units of trim.
(p)
Set the STAB TRIM 2 switch to ON.
(q)
Hold the STAB TRIM ALTN switches to the APL NOSE DN position until the stabilizer stops.
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本文链接地址：747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(136)
