-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
R  B. Nicks, scratches,  Maximum depth must be 
R  chafing in  less than 10 percent of 
R  straight section  the wall thickness of 
R  the duct. There is no 
R  limit to the number of 
R  nicks, scratches or 
R  chafing permitted in the 
straight section of the 
duct. 
R  C. Nicks, scratches,  Maximum depth must be 
R  chafing in bends.  less than 10 percent of 
R  the wall thickness of 
R  the duct. 
R 
R 
R 
R 

2. Examine the bushings in the brackets, look for: 
R  A. Wear  0.26 in. (6.6 mm) 
R  maximum inside diameter 
R  of the bushing. 
R 
R 
5. Close-up________
 Subtask 80-13-43-410-052
 A. Close Access

If the damage is less than the allowable limits, repair the damage at next A check. If the damage is more than the allowable limits, replace the duct (Ref. TASK 80-13-43-000-041) and (Ref. TASK 80-13-43-400-041).
If the damage is less than the allowable limits, repair the damage (Ref. CMM 71-00-17). If the damage is more than the allowable limits, replace the duct (Ref. TASK 80-13-43-000-041) and (Ref. TASK 80-13-43-400-041).
If the wear is more than the acceptable limits, replace the duct (Ref. TASK 80-13-43-000-041) and (Ref. TASK 80-13-43-400-041).
 (1) Close the fan cowl doors (Ref. TASK 71-13-00-410-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR

 (2) Remove the access platform(s).

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 (3) Remove the warning notice(s).
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