Service difficulty report · Frame · Boeing 7377H4

Difficulty date
April 27, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N479WN
Make and model
Boeing 7377H4
Aircraft serial
33990
Aircraft time
59,976 hours, 35,850 cycles
Part
Frame
Condition
Cracked
Location
Entry Door
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

ENTRY DOOR UPPER FWD CUTOUT BS 312 FRAME LOWER EDGE CRACKED. MKD 126-01. TRIMED DAMAGED AREA AT ENTRY DOOR UPPER FWD CUTOUT BS 312 FRAME ASPER B 737-700 SRM 53-10-07-2R-1 FABRICATED ANGLE REPAIR ;AND LOCATED AND DRILLED NEW HOLES AT ENTRY DOOR UPPER FWD CUTOUT BS 312 FRAME ASPER B 737-700 SRM 53-10-07-2R-1 REPAIR 1AND 51-40-05-0G-0(MATERIAL USED 7075-0- .063 CLAD) APPLIED HEAT TREATMENT:FINAL TEMPER: 7075-T6. IAW AAR OP 84 - ALUMINUM HEAT TREATMENT. RES# 2019051-9 TREATED AND PRIME ANGLE REPAIR ASPER B 737-700 SRM 51-20-01-0G-0 INSTALLED REPAIR AT ENTRY DOOR UPPER FWS CUTOUT BS 312 FRAME ASPER B 737-700 SRM 51-40-02-0G-0

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