Service difficulty report · None · Boeing 7377H4

Difficulty date
October 25, 2021
Submitted
October 29, 2021
Operation
Air carrier
Aircraft
N481WN
Make and model
Boeing 7377H4
Aircraft serial
29853
Aircraft time
58,820 hours, 34,773 cycles
Part
None
Part number
111A13226
Condition
Cracked
Location
Center Wing Box
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

A .600' CRACK IN BS 663 BULKHEAD LOWER SKIN PANEL ATTACH ANGLE, RBL 40, WL 164. CUT AND REMOVED DAMAGED SECTION OF ATTACH ANGLE IAW SRM 57-10-10-2R-5 REPAIR 5. PERFORMED VISUAL INSPECTION OF REPAIR AREA. NO DEFECTS NOTED IAW SRM 57-10-10-2R-5, REPAIR 5. TREATED AND PRIMED REPAIR AND CUT EDGES IAW SRM 57-10-10-2R-5, REPAIR 5, STEP 10. INSTALLED ALL FUEL TANK FASTENERS. SEALED FASTENERS IN TANK IAW SRM 57-10-10-2R-5, REPAIR 5. INSTALLED REPAIR CHANNEL AND STIFFENER IAW SRM 57-10-10-2R-5, REPAIR 5, AND DWG 111A1000, SHT 153, REV -. DAMAGE REPAIRED IAW SRM 57-10-10-2R-5, REPAIR 5, & EA 21-157-03174.

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