Service difficulty report · Bulkhead · Boeing 737752

Difficulty date
August 9, 2023
Submitted
September 6, 2023
Operation
Air carrier
Aircraft
N7886A
Make and model
Boeing 737752
Aircraft serial
35122
Aircraft time
52,212 hours, 27,316 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

CRACKED LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL40 WL160.<[01] PART/MATERIAL IDENTIFIED PER SRM 57-10-10-0I-2 FIGURE 2 TABLE 2 ITEM 4.<BR>CUMULATIVE CRACK LENGTHS 30' EXCEED THE ALLOWABLE LIMITS AS GIVEN IN SRM 57-10-10-1A-2 PARA 4. D. (1).<BR>REPAIR TO BE PERFORMED IAW SRM 51-70-04-2R-10 AS GIVEN IN SRM 57-10-10-2R-2 PARA 1. C. NOTE: ALTERNATIVE PATCH REPAIR.;[02] VERIFIED CORRECTIVE ACTION 1;[03] CRACK IN THE LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL40 WL160 WAS REPAIRED IAW SRM 51-70-04-2R-10.;[04] VERIFIED CORRECTIVE ACTION 3;[05] VERIFIED CORRECTIVE ACTION 3