Service difficulty report · Rib · Boeing 7377H4

Difficulty date
December 28, 2021
Submitted
February 4, 2022
Operation
Air carrier
Aircraft
N452WN
Make and model
Boeing 7377H4
Aircraft serial
29846
Aircraft time
60,081 hours, 35,724 cycles
Part
Rib
Condition
Cracked
Location
Fwd Entry Door
Stage of operation
UK
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

ABOVE FWD ENTRY DOOR FWD CORNER AT BS 312 THERE`S A CRACKED RIB. FABRICATED UPPER CHORD REPAIR IAW SRM 53-10-07-2R-1 REPAIR 1, TRIMMED OUT CRACK AREA IAW SRM 53-10-07-2R-1 REPAIR 1. PERFORMED HFEC AT CUT OUT IAW NDTM PART 6; 51-00-00 PROCEDURE 23. NO CRACKS. ACCOMPLISHED HEAT TREATMENT ON REPAIR PART PER BOEING 737-700 SRM 53-10-07-2R-1 REPAIR 1 AND BAC5602. TREATED AND PRIMED REPAIR PART AND REPAIR AREA PER BOEING 737-700 SRM 51-20-01-0G-0 AND SOPM 20-41-02. INSTALLED REPAIR PART PER BOEING 737-700 SRM 53-10-07-2R-1 REPAIR 1

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