Service difficulty report · Bulkhead · Boeing 7377H4

Difficulty date
September 9, 2023
Submitted
September 11, 2023
Operation
Air carrier
Aircraft
N924WN
Make and model
Boeing 7377H4
Aircraft serial
36628
Aircraft time
49,832 hours, 30,143 cycles
Part
Bulkhead
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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

L/H 663.75 LOWER BULKHEAD CRACKED. CRACKS STARTS APPROXIMATELY LBL 54.21 AND TRAVELS TO LBL 40.00. CRACK MEASURES AT 15 1/2 INCHES BEFORE IT GOES BEHIND THE HYDRAULIC MODULE BRACKET.<[01] ACCOMPLISHED PERMANENT REPAIR OF 4 INCHES OF CRACK IAW SRM 51-70-04-2R-10. REMAINING CRACK REPAIRED ON TTG8Q00NBFEQ.;[02] ACCOMPLISHED POST REPAIR INSPECTION PER 737 NDT MANUAL PART 4 51-00-02. NO DEFECTS NOTED.

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