A320飞机维护手册 AMM ENGINE 发动机 2(94)

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 C. Cracks that extend from bolt holes toward casing skin.
 D. Cracks in other areas of flange.
E. Nicks, scores and scratches.
F. Cracks in flange/case skin radius.
 2. Casing skin for:Not serviceable
5 cracks with a minimum5 hole separationbetween cracks.
Not serviceable.
5 cracks per flange 0.25 in. (6.35 mm) long with a minimum 5 in. (127 mm) separation between any other cracks.
Any number 1 in. (25.4mm) long 0.01 in. (0.25 mm) deep after removal of high metal with 1 in.
 (25.4 mm) minimum separation.
Not serviceable.
See limit extensions(Ref. TASK 72-00-00-200-025).
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A. Cracks in parent  Any number 0.04 in. (1  See limit extensions
 metal  mm) long and 2 in. (50.8  (Ref. TASK 72-00-00-200-
mm) minimum apart.  025).
 B. Nicks and  Any number 0.01 in.
 scratches.  (0.25 mm) deep after
 removal of high metal.
 C. Dents  Any number, smooth
 contour, 0.02 in. (0.5
 mm) deep.
 3. All threaded ports
 and bosses for:
 A. Damaged threads.  One full thread
 cumulative or continuous
 may be removed after
 chasing threads.
 B. Cracks in weld of  One per port in boss  See limit extensions
 ports and bosses.  0.04 in. (1 mm) long.  (Ref. TASK 72-00-00-200-
025).
 4. Ring sector support
 for:
 A. Cracks  Any number if attachment
 parts are secured.
 5. Angle brackets for:
 A. Broken bracket.  Not serviceable.
 B. Cracks in all  Any amount providing
 other areas.  cooling air tubes and
 attaching fasteners are
 secured.
 6. Colling air tube
 supports for:

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A. Cracks at  Any amount providing
 mountaing flanges. support is secured.

 B. Cracks in all Any amount providing
 other areas:  cooling air tubes and
 attaching fasteners are
 secured.

 5. Close-up
________
 Subtask 72-54-00-410-074
 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 cowl doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 Subtask 72-54-00-440-060
 B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
 Subtask 72-54-00-410-080
 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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 1. Reason for the Job
__________________
 This TASK is applicable for /P engines.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
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No specific warning notice
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 72-00-00-200-025 Over-Serviceable-Limit Extensions 78-30-00-081-041 Make the Thrust Reverser Serviceable after
　
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