N.
TE-Flap Load Relief System - Test
S 865-177
(1)
Move the flap control lever to the 30-unit detent, and let the TE flaps and LE slats fully extend.
S 865-178
(2)
Open this circuit breaker on the P11 panel and attach DO-NOT-CLOSE tag:
(a)
11J18, FLAP LOAD RELIEF
S 865-179
(3) Push and hold the LOAD RELIEF-test switch.
NOTE: The LOAD RELIEF-test switch is near the E/E bay access panel.
____
S 215-180
(4)
Make sure the EICAS message, FLAP LD RELIEF, does show on the display unit and the TRAILING EDGE light is on.
S 865-181
(5)
Release the LOAD RELIEF-test switch.
S 215-182
(6)
Make sure the EICAS message, FLAP LD RELIEF, does not show on the display unit and the TRAILING EDGE light is off.
S 865-183
(7)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:
(a)
11J18, FLAP LOAD RELIEF
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A
757 MAINTENANCE MANUAL
S 215-184
(8)
Push and hold the LOAD RELIEF-test switch and do the checks that follow:
(a)
Make sure the TE flaps move to the 25-unit position.
(b)
Make sure the position indicator needles are in the tolerance band for the 25-unit position.
S 215-185
(9)
Release the LOAD RELIEF-test switch and do the checks that follow:
(a)
Make sure the TE flaps go to the 30-unit position.
(b)
Make sure the position indicator needles are in the tolerance band for the 30-unit position.
S 215-186
(10)
Make sure the EICAS messages, FLAP/SLAT ELEC or FLAP ISLN VAL, do not show on the status display.
S 215-187
(11)
Make sure the messages, FLAP/SLAT ELEC, FLAP ISLN VAL, or a FLAP/SLAT BITE, do not show on the ECS/MSG display.
S 865-188
(12)
Move the flap control lever to the zero (FLAPS UP) detent, and let the TE flaps and LE slats fully retract.
O.
Put the Airplane Back to Its Usual Condition
S 865-146
WARNING: REFER TO AMM 32-00-15 FOR THE MAIN GEAR DOOR LOCK INSTALLATION
_______ PROCEDURE. FAST MOVEMENT OF THE DOORS MAY CAUSE INJURY OR DAMAGE IF THE LOCKS ARE NOT CORRECTLY INSTALLED.
(1)
Remove all hydraulic power (AMM 29-11-00/201).
(2)
Remove electrical power (AMM 24-22-00/201).
(3)
Close the access doors and install the access panels.
S 865-169
S 415-145
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757 MAINTENANCE MANUAL
TASK 27-51-00-715-167
5. Operational Test of the Flap/Slat Alternate Drive System________________________________________________________
NOTE: This is a scheduled maintenance task.
____
A. References
(1)
AMM 24-22-00/201, Electrical Power-Control
(2)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Access
(1)
Location Zones
119 Main Equipment Center
211/212 Control Cabin
C.
Prepare for the Test
S 865-215
(1)
Make sure the six EICAS circuit breakers on the overhead panel, P11, are closed.
S 865-216
(2)
Make sure the flaps and slats are in the fully retracted position with the flap control lever in the zero (FLAPS UP) detent.
S 865-217
(3)
Supply electrical power (AMM 24-22-00/201).
S 865-218
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
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