Service difficulty report · Bulkhead · Boeing 7377H4

Difficulty date
March 8, 2023
Submitted
April 18, 2023
Operation
Air carrier
Aircraft
N281WN
Make and model
Boeing 7377H4
Aircraft serial
36528
Aircraft time
51,516 hours, 31,045 cycles
Part
Bulkhead
Condition
Delaminated
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

PREVIOUS REPAIR STARTS TO DELAM AT LOWER R/H COMPOSITE BULKHEAD AT BS663 RBL54 WL153.<[01] PART/MATERIAL IDENTIFIED PER SRM 57-10-10-0I-2 FIGURE 2 TABLE 2 ITEM 4<BR>CRACK MIGRATION CAUSING DELAMINATION IN PREVIOUS REPAIR EXCEEDS 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:;[02] PERFORMED DAMAGE REMOVAL & SURFACE PREPARATION STEPS IAW SRM 51-70-04-2R-10 PARA 4. STEPS A-C.;[03] VALIDATED REPAIR PER SRM 51-70-04-2R-10. DUE TO PROXIMITY OF REPAIR TO DAMAGE ON FAULT TTG8Q00JDQTX THE REPAIR WILL BE COMPLETED ON FAULT TTG8Q00JDQTX;[04] VERIFIED CORRECTIVE ACTIONS 1-3<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 51-70-04-2R-10<BR><BR>DUE TO PROXIMITY OF REPAIR TO DAMAGE ON FAULT TTG8Q00JDQTX THE REPAIR WILL BE COMPLETED ON FAULT TTG8Q00JDQTX;[05] VERIFIED CORRECTIVE ACTIONS 1-3<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 51-70-04-2R-10<BR><BR>DUE TO PROXIMITY OF REPAIR TO DAMAGE ON FAULT TTG8Q00JDQTX THE REPAIR WILL BE COMPLETED ON FAULT TTG8Q00JDQTX

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