- Do a borescope inspection of the combustion chamber dome area (Ref. TASK 72-42-00-290-005).
- Do a Maximum Power Assurance check (Ref. TASK 71-00-00-710-008).
(b) If the engine is referenced in the CFM SB 72-0391, do a borescope inspection (use a flexible borescope) of the booster blades stage 5 and booster vane abradable stage 5 (Refer to CFM SB 72-0391).
NOTE : The borescope inspection may be delayed 25 hours or 10
____ cycles (whichever comes first).
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Subtask 72-00-00-210-063
C. Birdstrike Inspection R NOTE : Before this inspection, perform steps 4.A "Visual Inspection" and
____ R 4.B "Gaspath Inspection".
(1) Examine the external portions of the nacelle inlet at the point of impact and look for:
(a) Cracks.
(b) Signs of distortion.
(c) Loose or missing fasteners.
(2) Examine the inlet cowl structure for secondary damage and look for:
(a) Cracks.
(b) Signs of distortion.
(c) Delamination.
(d) Loose or missing fasteners.
(3) Examine all open ports in the inlet and look for:
(a) Blockage.
(4) If the FOD went through the inlet cowl structure, look for:
(a) Damage to internal structure.
(b) Damage to internal equipment.
(5) If there is an indication of engine imbalance, examine the following nacelle components for signs of damage:
(a) Inlet cowl.
(b) Exhaust nozzle.
(c) Fan cowl hinges and surrounding structure.
(d) Fan cowl latches and surrounding structure.
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(e) Centerbody attachment rings and fasteners.
5. Close-up
________
Subtask 72-00-00-410-073
A. 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
Subtask 72-00-00-440-059
B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 72-00-00-410-078
C. 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 warning notice(s).
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TASK 72-00-00-200-007
Procedure After Engine Fire or Use of Fire-Extinguishing Agents
WARNING : A LARGE NUMBER OF O-RINGS, GASKETS AND OTHER TYPES OF SEALS ARE MADE
_______ OF VITON MATERIAL. VITON MATERIAL DECOMPOSES WHEN THE TEMPERATURE IS MORE THAN 750 DEG.F (400 DEG.C). ONE OF THE BY-PRODUCTS OF THIS DECOMPOSITION IS HYDROFLUORIC ACID. THIS ACID CAN CAUSE BAD BURNS. THUS, USE ACID-RESISTANT GLOVES IF YOU MUST REPLACE A VITON SEAL DURING MAINTENANCE AFTER A FIRE.
1. Reason for the Job
__________________
You must do this procedure when fire-extinguishing agents have been used.
R NOTE : After any fire damage, the removal of the engine from the aircraft
____ R for inspection is necessary.
R
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific vacuum cleaner
No specific warning notice
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2155 USA MIL-C-25779D ardrox 6025 (Ref. 70-30-00) R
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C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION ------------------------------------------------------------------------------- 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM ENGINE 发动机 1(35)
