................................................................................. | Lower Mounting Attachments of the | A Maximum play of 0.050 inch | | Actuator Support Bracket: Examine | (1.270 mm) is permitted. | | the attachments for radial play. | | ................................................................................. | Lever set Assembly: Examine the | A Maximum play of 0.040 inch | | assembly for axial play. | (1.016 mm) is permitted. | ................................................................................. | Lever set Assembly: Examine the | A Maximum play of 0.030 inch | | assembly for radial play. | (0.762 mm) is permitted. | 2........................................…......................................1
S 096-312-N00
(10)
If it is necessary, remove the engine inlet cover, turbine exhaust cover, and fan reverser plug covers from each engine.
S 096-060-N00
(11)
Remove the protective mats from the inlet cowl.
S 866-061-N00
(12)
Remove the DO-NOT-OPERATE tags from the fuel control switches.
S 416-062-N00
(13)
Do this task: Put the Airplane Back to its Usual Condition.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
No. 3 - Birdstrike (Foreign Object Damage) Inspection
_____________________________________________________
TASK 72-00-00-206-063-N00
3. Birdstrike (Foreign Object Damage) Inspection
_____________________________________________
A. General
(1)
The FIM gives you the steps that you follow after unwanted objects go into the engine, when there is foreign object ingestion. The damage that is caused is referred to as foreign object damage or FOD.
(2)
Signs of a birdstrike, when a bird goes into the engine, are not always easy to find. Elapsed time, and some weather conditions, causes the signs to decrease. A small quantity of organic material in the inlet is a strong sign of a birdstrike.
(3)
When a birdstrike occurs, remaining pieces of the bird can be found in these areas: the inner surfaces of the shrouds in the middle of the fan blades, the outer ends of the guide vanes of the fan exit or the LPC inlet, the 2.5 bleed screens, and in the thrust reverser linkage.
(4)
When you examine the inlet area, look at the path of the remaining bird pieces to help you find the possibly damaged areas.
B.
References
(1)
AMM 71-00-02/401, Power Plant
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 71-11-06/201, Core Cowl Panels
(4)
AMM 78-31-00/201, Thrust Reversers
C.
Access
(1)
Location Zones
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
D.
Examine the Engine for Birdstrike Damage, and FOD.
S 216-331-N00
(1)
Examine these inlet areas for damage:
(a)
The inlet cowl
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No. 3 - Birdstrike (Foreign Object Damage) Inspection
_____________________________________________________
(b)
The inlet cone
(c)
The fan blades
(d)
The inlet guide vanes of the LPC
(e)
The 1.6-stage bladesin the LPC
(f)
The guide vanes of the fan exit
(g)
The linings that absorb sound.
S 016-332-N00
(2) Open the fan cowl panel (AMM 71-11-04/201).
S 046-333-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.
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