Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
September 14, 2021
Submitted
September 20, 2021
Operation
Air carrier
Aircraft
N473WN
Make and model
Boeing 7377H4
Aircraft serial
33832
Aircraft time
58,567 hours, 34,627 cycles
Part
Attach Angle
Condition
Cracked
Location
Bs 663 Bulhead
Stage of operation
IN
How discovered
V
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

BS 663 LOWER CHORD COMMON TO FUEL TANK CRACKED AT RBL 8, CUT & REMOVED ATTACH ANGLE IAW SRM 57-10-10-2R-5 REPAIR 5. PERFORMED DVI OF REPAIR AREA & UNDERLYING STRUCTURE. NO DEFECTS IAW SRM 57-10-10-2R-5. HFEC IAW NDT PART 6 51-00-00 PROC 16. NO DEFECTS. FABRICATED REPAIR PARTS IAW SRM 57-10-10-2R-5, REPAIR 5. TREATED AND PRIMED REPAIR PARTS & CUT EDGE IAW SRM 57-10-10-2R-5 REPAIR 5. INSTALLED REPAIR PARTS IAW SRM 57-10-10-2R-5 REPAIR 5. BONDING CHECKED GOOD. APPLIED CIC TO REPAIR AREA IAW SRM 57-10-10-2R-5 REPAIR 5. PERFORMED LEAK CHECK IAW AMM 28-11-00-400-801. NO LEAKS.

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