c)  Clean or replace the strainer for the fuel distribution valve as necessary (AMM 73-11-04/701).
 (f)  Examine the air system for contamination.
 1) Remove the PS3 air filters (AMM 75-33-02/401).
 2) Examine the filters for damage.

 NOTE: Keep the particles you find to do an analysis of
____
 them.

 3)  Clean or replace the filters as necessary (AMM 75-33-05/201).
 (g)  For engines operating under the requirements of PW SB 72-731, to avoid Fan Thrust Deterioration Mode (FTDM), recountour the fan blade leading edges using any of the procedures in PW SB 72-731 at the next station capable of performing the procedure, not to exceed 10 cycles.
 S 416-111-N00
 (3)  
Do this task: Put the Airplane Back to its Usual Condition.

 (4)  
Do the Test No. 9 - Performance Test (AMM 71-00-00/501).

 S 726-112-N00
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 72-00-00
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No. 10 - Fire/Fire Extinguishing Agent Exposure Inspection/Check
________________________________________________________________
 TASK 72-00-00-206-342-N00
 10. Fire/Fire Extinguishing Agent Exposure Inspection/Check
_______________________________________________________
 A. General
 (1)  
This procedure gives you the steps that you do after an engine has been exposed to fire or fire extinguishing agents.

 B.
References

 (1)  
AMM 72-00-00/701, Power Plant

 C.
Do the Fire/Fire Extinguishing Agent Exposure Inspection/Check

 S 286-343-N00
 (1)  
If the engine was damaged by fire it will require special inspection which exceed the normal inspection requirements. For special instruction for relative engine parts, contact your Pratt & Whitney representative.

 S 166-344-N00

 (2)  
If the engine was exposed to fire extinguishing agents (without a fire) on it's external or internal surfaces, clean the engine (AMM 72-00-00/701).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
No. 11 - Front Fan Case Rubstrip Inspection
___________________________________________
 TASK 72-00-00-206-113-N00
 11. Front Fan Case Rubstrip Inspection__________________________________
 A. Standard Tools and Equipment
 (1)  
Light - White, Fluorescent

 (2)  
Mat - Protective, Rubber Manufacturer's Association, Grade SC43, neoprene sponge, 1 inch thick, 5 x 6 feet with warning streamers attached (three are necessary)

 B.
References

 (1)  
AMM 72-33-01/601, Front Fan Case

 C.
Access

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

 D.
The Rubstrip Inspection

 S 866-114-N00
 (1)  Make sure that the fuel control switches are in the CUTOFF position and attach DO-NOT-OPERATE tags.
 S 496-115-N00
 CAUTION: MAKE SURE THAT YOU PUT COVERS ON ALL OF THE LOWER HALF OF THE
_______ INLET COWL SURFACE. ALSO MAKE SURE THAT THE EDGES OF THE MATS TOUCH OR ARE ATTACHED WITH TAPE. IF THE EDGES ARE NOT, THEN THE TOOLS OR PARTS CAN FALL AND CAUSE DAMAGE TO THE INLET COWL SURFACE.
 (2)  
Put the protective mats on the lower, inner half of the inlet cowl.

 S 216-116-N00

 (3)  
With the white light, examine the fan rubstrip for areas that are missing, not bonded, or are worn.

 (a)  
If you find damage, refer to AMM 72-33-01/601 for the damage limits.
　
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