WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO ACTIVATE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU ACTIVATE THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(10)
Close the thrust reverser (Ref 78-31-00/201).
S 416-013
(11)
Close the core cowl panel (Ref 71-11-06/201).
S 416-014
(12)
Close the fan cowl panel (Ref 71-11-04/201).
S 866-058
(13)
Remove the DO-NOT-REMOVE tag from these circuit breakers:
(a)
P6 Main Power Distribution Panel 1) 6F01 ENG 1 IGN 1 2) 6F02 ENG 2 IGN 1 3) 6F03 ENG 3 IGN 1
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747-400 MAINTENANCE MANUAL
4) 6F04 ENG 4 IGN 1 5) 6G19 STBY IGN ENG 1 6) 6G20 STBY IGN ENG 2 7) 6G21 STBY IGN ENG 3 8) 6G22 STBY IGN ENG 4 9) 6J18 ENG START AIR CONT 10) 6K18 APU ALTN CONT 11) 6K19 ENG 1 IGN 2 12) 6K20 ENG 2 IGN 2 13) 6K21 ENG 3 IGN 2 14) 6K22 ENG 4 IGN 2 15) 6L10 ENG 1 FUEL CONT VLV 16) 6L11 ENG 2 FUEL CONT VLV 17) 6L12 ENG 3 FUEL CONT VLV 18) 6L13 ENG 4 FUEL CONT VLV
S 866-014
(14) Remove the electrical power if it is no longer necessary for other operations (Ref 24-22-00/201).
TASK 36-11-00-706-091
3. Engine Bleed, Wing Leading Edge and Body Crossover Duct Audible Leakage Check
_____________________________________________________________________________
A. General
(1) This procedure examines the general condition and duct joint leakage of pneumatic ducts in the engine compartment, wing leading edge, air conditioning bay and wheel well. Access to the ducts are required to do the audible and visual inspections. A ground air source is required to do the leakage check.
B. Standard Tools and Equipment
(1) Ground air source that can provide clean air at a regulated pressure of 140 pounds/min and 45 psig. Connection must mate with a 3-inch diameter pneumatic ground service fitting.
C. Consumable Materials
(1) G00095 Detector - Leak, Leak-Tek (160X)
D. References
(1) AMM 06-09-02/201, Body Section 42 Access Doors and Panels
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MAINTENANCE MANUAL
(2)
AMM 06-09-03/201, Body Section 44 Access Doors and Panels
(3)
AMM 06-09-04/201, Body Section 46 Access Doors and Panels
(4)
AMM 24-22-00/201, Manual Control
(5)
AMM 27-81-00/201, Leading Edge Flap System
E.
Access
(1)
Location Zone 133 Air-Conditioning Equipment Bay, Left 134 Air-Conditioning Equipment Bay, Right 412 Engine 1 - High Pressure Compressor Case 422 Engine 2 - High Pressure Compressor Case 432 Engine 3 - High Pressure Compressor Case 442 Engine 4 - High Pressure Compressor Case 452 Engine 1 - Strut Torque Box 462 Engine 2 - Strut Torque Box 472 Engine 3 - Strut Torque Box 482 Engine 4 - Strut Torque Box 511 Left Wing Leading Edge - Inboard 521 Left Wing Leading Edge - Center 531 Left Wing Leading Edge - Outboard 611 Right Wing Leading Edge - Inboard 621 Right Wing Leading Edge - Center 631 Right Wing Leading Edge - Outboard
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