Service difficulty report · Bulkhead · Boeing 7378F2

Difficulty date
July 13, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N829SY
Make and model
Boeing 7378F2
Aircraft serial
34414
Aircraft time
50,121 hours, 26,441 cycles
Part
Bulkhead
Condition
Cracked
Stage of operation
IN
How discovered
O
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

DEFECT: TRANSFERRED FRM LOGPAGE 682938 ITEM 1: FOUN EVIDENCE OF CRACK DAMAGE ON FWD BULKHEAD OF WHEEL WELL PRESSURE DECK STA 663 LBL 31.83-45.64. REF SRM 57-10-10-2R-4 FOR TYPICAL CRACK LOCATION AND REPAIR INSTRUCTION. RESOLUTION: REPAIRED DAMGE ON FWD BULKHEAD OF WHEEL WELL PRESSURE DECK STA. 663 LBL 31.83-45.64 PRE SRM 57-10-10-2R-3 REV 76 ALTERNATIVE 2. CAT B REPAIR. REPAIR INSPECTION REQUIREMENTS PER B737 57-10-10-2R-3 TABLE 205; INSPECTION THRESHOLD 56,000 FLIGHT CYCLES AFTER REPAIR INSTALLATION HFEC INSPECTION INTERVAL 36,000 FLIGHT CYCLES: INTIAL WEB AND PART 1 REPAIR WEB FROM THE AFT SIDE (ARROW 1). PART 3 FILLER NOT COMMON TO THE PART 2 DOUBLER FROM THE FORWARD SIDE (ARROW 2). PART 2 DOUBLER FROM THE FORWARD SIDE (ARROW 6). UPPER COMPRESSION CHORD FROM THE AFT OR FWD SIDE (ARROW 5) LFEC INTERVAL 36,000 FLIGHT CYCLES, PART 3 FILLER COMMON TO THE PART 2 DOUBLER FROM THE FWD SIDE (ARROW 3). PLACED GMM/MTI MDDR # 113179 LOGPAGE 682940 ITEM 2.

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