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REPAIR  COMPOSITE WEATHER-PROTECTIVE COVER (AVIM)
REPAIR COMPOSITE WEATHER-PROTECTIVE  COVER  (AVIM) (Continued) SURFACE  ABRASION

TM-55-1520-240-23-4 CH-47D Heilcopter Manual
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TM  55-1520-240-23-4 5-137.1 REPAIR  COMPOSITE WEATHER-PROTECTIVE COVER  (AVIM) (Continued) 5-137.1 1. Repair  of  composite  weather-protective  cover  (1) includes  the  following  procedures: NOTE Repair  within  2 inches  of  center  hole are  not  permitted. Damage Steps Surface Abrasion 2-9 Edge Delamination 10-17 Bond Void (To 2  Square-Inches) 18-28 Bond Void (Over 2 Square-Inches) 29-58 Puncture  Through One  Skin  and Core (To 1  Square-Inch) 59-70 Puncture  Through One  Skin  and Core (Over 1  Square-Inch) 71-75 Puncture Through  Both Skins  and Core (To 1  Square-Inch) 76-87 Puncture Through  Both Skins  and Core (Over 2 Square-Inches) 88-105 NOTE Procedure  is  same  to  repair  forward or  aft  weather-protective  cover. 5-755







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