S 016-334-N00

 (4)  
Open the core cowl panel (AMM 71-11-06/201).

 S 016-335-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (5)  
Open the thrust reverser (AMM 78-31-00/201).

 S 216-336-N00

 (6)  
Examine the turbine exhaust area and the 2.9 bleed valves for metal particles.

 (a)  
If you find metal particles, remove the engine (AMM 71-00-02/401) and repair the damage to the engine core as necessary.

 S 226-337-N00
 (7)  Do the gaspath inspection of the high pressure compressor (AMM 72-00-00/601) if you find one or more of these conditions:
 NOTE: These conditions are an indication that an object went
____
 through the core of the engine.

 (a)  
Damage to the fan blades, adjacent to the engine core inlet

 (b)  
Remaining bird pieces or FOD on the LPC inlet vanes or on the

 2.5 bleed screens.
 (c)  There was damage to the 1.6th stage stator rubstrip.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 72-00-00
 ALL  ú ú N01 Page 617 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
No. 3 - Birdstrike (Foreign Object Damage) Inspection
_____________________________________________________
 (d)  
The flight crew made a report that they smelled a bird in the flight compartment after the incident.

 (e)  
The incident caused an engine surge followed by an unusual operation of the engine do a borescope inspection of the 5th, 6th and 10th stage blades. If damage is found, do a borescope inspection of the entire HPC stages 5 through 15.

 NOTE: When there is engine core FOD or bird ingestion, some
____ damage to the HPC 5th and 6th stage blades can possibly occur. Signs of blade tip cracks or fracture are possible. You can more easily examine for this damage to the 5th stage blades with a flexible borescope with a direct vision deflecting tip. To do this, get access through the engine core inlet or the 2.5 bleed ports in the 4th-stage LPC. You can examine the 6th-stage blades through the borescope access port, AP-2.
 S 226-338-N00
 (8)  If the gaspath inspection shows that there is damage to the rear HPC stages, do the gaspath inspection of the HPT vanes and blades (AMM 72-00-00/601).
 NOTE: The damage to look for is possible blade tip cracking or
____ tip fracture of the 5th and 6th-stage blades. The engine must be removed if this type of damage is found.
 S 416-339-N00
 (9)  
Do this procedure: Put the Airplane Back to its Usual Condition.

 S 216-340-N00

 (10)
 After you do a visual inspection, refer to the FIM 71-Fault Code Diagram, Bird Strike/FOD - Fault Codes.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 72-00-00
 ALL  ú ú N01 Page 618 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
No. 4 - Engine Overtemperature Inspection
_________________________________________
 TASK 72-00-00-206-064-N00
 4. Engine Overtemperature Inspection
_________________________________
 A. General
 (1)  
This task has the steps that you do after the exhaust gas temperature (EGT) goes higher than the limits. Figures 602 and 603 show the engine overtemperature limits (time versus the highest EGT that occurred) and the inspections that are necessary for the overtemperature that occurred. In this task, that incident will be referred to as an overtemperature.

 (a)  
Figure 602 shows the limits for overtemperatures that occurred during ground and in-flight starts, while the engine operated at less than minimum power.

 (b)  
Figure 603 shows the limits for overtemperatures that occurred during all other engine conditions.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 發動機 ENGINE 1(32)