Service difficulty report · Flange · Boeing 7377H4

Difficulty date
November 19, 2021
Submitted
December 27, 2021
Operation
Air carrier
Aircraft
N461WN
Make and model
Boeing 7377H4
Aircraft serial
32465
Aircraft time
59,271 hours, 35,159 cycles
Part
Flange
Condition
Cracked
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

FWD LT FUSELAGE FRAME SMALL CRACK AT FLANGE ABOVE L1 DOOR CUTOUT BS 312. REMOVED CRACK IAW SRM 53-10-07-2R-1 REPAIR 1. PERFORMED HFEC INSP. ALONG EDGE OF CUTOUT IAW NDT PART 6; 51-00-00, PROCEDURE 23. NO CRACKS NOTED. LOCATED & DRILLED NEW HOLES ON LAY OUT REPAIR AND FABRICATED NEW PART. HEAT TREATED ANGLE IAW BAC 5602 PAGES 22- 28. TRIM OUT REPAIR ANGLE IAW SRM 53-10-07-2R-1 REPAIR 1. LOCATED & DRILLED REPAIR PART IAW SRM 53-10-07-2R-1. PERFORMED ROTO INSP ON EXISTING HOLES IAW NDT P6 51-00-00 PROC.16; NO CRACKS. PERFORMED PENETRANT INSP ON ANGLE IAW SOPM 20-20-02, NO CRACKS NOTED. TREATED & PRIMED PART IAW AMM 51-21-41 -370-801 & AMM 5121-72-370-80. INSTALLED REPAIR IAW SRM 51-40-02-0G-0.

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