Service difficulty report · Bulkhead Web · Boeing 7377H4

Difficulty date
December 30, 2022
Submitted
January 18, 2023
Operation
Air carrier
Aircraft
N933WN
Make and model
Boeing 7377H4
Aircraft serial
36640
Aircraft time
44,739 hours, 27,195 cycles
Part
Bulkhead Web
Condition
Cracked
Location
Bs 663
Stage of operation
IN
How discovered
E
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

TWO CRACKS AT BS 663, WL 164, LBL 17, AND 18. FOUND WITH NDT INSPECTION PT6 51-00-00 PROCEDURE 16. CONFORMED SPLICE ANGLE IAW SRM 57-10-10-2R-5, SPLICE ANGLE, FABRICATED IAW SRM 57-10-10-2R-5. REMOVED DAMAGE FROM BS663 LBL 6-32 WL 164 AND PERFORMED DVI ON REPAIR AREA AND NO ADDITIONAL DAMAGE FOUND IAW SRM 57-10-10-2R-5. NDI INSPECTION OPEN HOLES AND EDGE CRACK FREE ON REPAIR AREA BS 663 BL 6-32 WL 164 IAW 57-10-10-2R-5. FABRICATED; LOCATED; DRILLED; APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON REPAIR FILLER. LOCATED AND DRILLED REPAIR DOUBLER IAW 57-10-10-2R-5. CAP SEAL OF REPAIR FASTENERS IAW TTG8Q00GRCJZ. INSTALLED REPAIR IAW 57-10-10-2R-5.

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