(2) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
4. Procedure
_________ Subtask 71-00-00-790-060
A. To Identify the Source of the Leak at the Drain Mast WARNING : - ENGINE OPERATION MUST NOT EXCEED MINIMUM IDLE WHEN PERSONNEL
_______
ARE IN ENTRY/EXIT CORRIDOR.
- POSITIVE COMMUNICATION BETWEEN THE FLIGHT COMPARTMENT AND PERSONNEL IN ENTRY EXIT CORRIDOR IS NECESSARY.
- INLET AND EXHAUST HAZARD AREAS MUST BE STRICTLY OBSERVED BY PERSONNEL IN ENTRY/EXIT CORRIDOR.
(1) To check for fuel leaks at the drain mast, do the following steps:
(a) Start the engine (Ref. TASK 71-00-00-710-003).
(b) Let the engine become stable at minimum idle for 5 minutes.
(c) Shut-down the engine (Ref. TASK 71-00-00-710-028).
(2) To check for oil leaks at the drain mast, do the following steps:
(a) Start the engine (Ref. TASK 71-00-00-710-003).
(b) Let the engine become stable at minimum idle for 5 minutes.
(c) Slowly accelerate the engine and stabilize at 70 percent N1 for 5 minutes.
(d) Shut-down the engine (Ref. TASK 71-00-00-710-028).
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(3) Measure the individual leakage quantities collected from each plastic bottle. For the fuel, oil and hydraulic fluid leakage limits (Ref. TASK 71-00-00-790-002).
5. Close-up
________
Subtask 71-00-00-010-107
A. Get Access
(1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Put the access platform in position.
(3) Open the thrust reverser doors (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 71-00-00-869-200
B. Reconnect drain lines.
(1) Remove the plastic bottles and tubes.
(2) Reconnect the drain lines.
Subtask 71-00-00-410-103
C. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
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D. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041). Subtask 71-00-00-410-104
E. Close Access
(1) Close the fan cowl doors (Ref. TASK 71-13-00-410-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Remove the access platform(s).
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COWLING - DESCRIPTION AND OPERATION
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1. General
_______ (Ref. Fig. 001, 002) The cowls enclose the periphery of the engine so as to form the engine nacelle. The nacelle provides :
- protection for the engine and the accessories
- airflow around the engine during its operation.
- lightning protection
- HIRF and EMI attenuation
This section is a description of the following cowls :
- air intake cowl
- fan cowl
- the thrust reversers and the primary exhaust (Ref. 78-00-00).
NOTE : Fan cowls and thrust reversers are not removed for an engine change.
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Nacelle Components
Figure 001
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Nacelle Access Doors and Openings
Figure 002
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AIR INTAKE COWL - DESCRIPTION AND OPERATION
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