A320飞机维护手册 AMM ENGINE 发动机 1(101)

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(2) Trailing edge
tip curl. R
(3) Nicks and dents.
blades to these increased limits can be adjacent.
 In all cases, deflection tip angle must not be more than 60 degrees from original airfoil.
Tip curl must not extend more than dimension Z1=0.5 in. (13 mm) across the blade tip and not more than dimension Z=0.5 in. (13 mm) along the trailing edge, with maximum deflection from original contour dimension Y1=0.25 in.
 (6.35 mm). A maximum of 5 blades must not have tip curl up to dimension Z1=1 in. (25.4 mm) across the blade tip and up to dimension Z=1 in.(25.4mm) along the trailing edge with maximum deflection from original contour dimension Y1=0.3 in.
 (7.62 mm). No more than 3 blades to these increased limits can be adjacent.
No limited quantity if not deeper than 0.04 in.
(1.02 mm) and not longer than 0.25 in. (6.35 mm).
Replace pair of blades ifnot in the limits (Ref. TASK 72-21-00-300-028).No continued in-serviceextention is permitted.
Replace blade (Ref. TASK72-21-00-000-007) and(Ref. TASK 72-21-00-400-007) or blend the defects (Ref. TASK 72-21-00-320-003) if damage is within limit of figure.
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J. Nicks, dents and scratches on surface of blade platform (excluding fillet and recess area).  For scratches: no limited quantity, if not deeper than 0.02 in. (0.5 mm) and not longerthan 0.40 in. (10.16mm). For nicks and dents, no limit on diameter after
 removal of high metal.
R  K. Wear due to shingling on midspan shroud.  Any amount up to 0.005 in. (0.13 mm) deep. 
L. High metal caused by shingling on midspan shroud. Any amount aftersmoothing of high metal.
 M. Shingled midspan shrouds.  Not serviceable. 
N. Fan blade(s) tip seizure in fan  Not serviceable. 
case abradable 
shroud 

(Ref. Fig. 606/TASK 72-21-00-991-314) Blended fan blades must be repaired following ESM 72-21-01 Rep 01 at first shop visit opportunity.
Do blending procedure(Ref. TASK 72-21-00-320-003).
Replace pair of blades (Ref. TASK 72-21-00-300-028).
Refer to limit extensions(Ref. TASK 72-00-00-200-025).
Release the blade(s) withhand force to move theseized blade(s) tipforward and circumferentially. Then, do an inspection of the blade(s) as told in this procedure and abradable shroud (Ref. TASK 72-23-00-210-003) for serviceability. Make sure that there is free rotation of N1 rotor system.
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 inspection of these blades.

 Subtask 72-21-00-010-064
 B. If necessary, remove the fan blades for full inspection (Ref. TASK 72-21-00-000-007)
 5. Close-up
________ Subtask 72-21-00-410-066
 A. Close access.
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Remove the warning notice(s).

 (3) Remove the access platform(s).

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 TASK 72-21-00-210-006
 Inspect Fan Rotor Blades Removed from the Fan Disk.
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
 No specific 1 ACCESS PLATFORM 1M (3 FT)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
70-51-00-230-002 Fluorescent-Penetrant Inspection-Portable-Water
 Washable
 72-00-00-200-025 Over-Serviceable-Limit Extensions
 72-21-00-000-007 Removal of the Fan Rotor Blades

R 72-21-00-210-004 Detailed Inspection and Relubrication of Fan Blade R Dovetails, Midspan Shrouds, Retainers, Spacers, R Dampers and Fan Disk Dovetail Slots
　
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