TASK 71-00-00-206-025-N00
 5. Engine Drain System Inspection
______________________________
 A. References
 (1)
AMM 71-11-04/201, Fan Cowl Panels

 (2)
AMM 71-11-06/201, Core Cowl Panels

 (3)
AMM 71-71-00/601, Engine Vents and Drains

 (4)
AMM 78-31-00/201, Thrust Reverser System

 B.
Access

 (1)  
Location Zone
 412 Engine 1
 422 Engine 2
 432 Engine 3
 442 Engine 4

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(2)  
Access Panel
 415 and 416 Thrust Reverser Halves - Engine 1
 425 and 426 Thrust Reverser Halves - Engine 2
 435 and 436 Thrust Reverser Halves - Engine 3
 445 and 446 Thrust Reverser Halves - Engine 4

 C.
Procedure

 S 046-056-N00
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Do this task: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).

 S 016-057-N00

 (2)  
Open the fan cowl panels (AMM 71-11-04/201).

 S 016-058-N00

 (3)  
Open the core cowl panels (AMM 71-11-06/201).

 S 016-059-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (4)  
Open the thrust reversers (AMM 78-31-00/201).

 S 216-026-N00

 (5)  
Examine the engine drains:

 (a)  Make sure these items on the engine drain system are tightly attached and in good condition (AMM 71-71-00/601): 1) The drain lines
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
2) The overboard drain seal.
 (b)  
Make sure the strut drain inlets do not have blockage.

 (c)  
Make sure the fluid traps for the drain lines are dry.

 S 416-060-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (6)  
Close the thrust reversers (AMM 78-31-00/201).

 S 416-061-N00

 (7)  
Close the core cowl panels (AMM 71-11-06/201).

 S 416-062-N00

 (8)  
Close the fan cowl panels (AMM 71-11-04/201).

 S 446-063-N00

 (9)  
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

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POWER PLANT (ENGINE CHECKOUT TARGETS) - MAINTENANCE PRACTICES
_____________________________________________________________
 1.  General_______
 A.  This task contains the engine checkout targets to be used with the Power Plant - Adjustment/Test section (AMM 71-00-00/501).
 B.  The table of engine checkout targets (referred to as the table) gives . the minimum idle, . the approach idle, . the N1 at 1.25 EPR, and . the minimum burner pressure.
 You can use these targets in power plant tests. The power plant tests in AMM 71-00-00/501 and targets are:
　
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