Service difficulty report · Bulkhead · Boeing 7377H4

Difficulty date
July 14, 2023
Submitted
August 7, 2023
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
71,392 hours, 42,326 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 LBL37 WL161.<[01] PARTIAL STEPS 3-6.;[02] REMOVED L/H COMPOSITE BULKHEAD (VAPOR BARRIER) AT BS663 LBL I.A.W SRM 51-40-02-0G-0 .;[03] UPDATE STEP 7.;[04] UPDATE STEPS 5;6 AND 9.;[05] COMPLETED STEPS 5;6;7 AND 9;[06] VERIFIED STEPS 5;6;7;9 COMPLETE.;[07] COMPLETED STEPS #1 AND #2.<BR>PARTIALLY STEP#3.;[08] UPDATED STEPS 1 AND 2 TO PARTIAL.;[09] ALL STEPS COMPLETED.;[10] VERIFY ALL STEPS COMPLETED;[11] REMOVED AND REPLACED CRACKED LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL37 WL161 AS REQUIRED IAW SRM 51-40-02-0G-0; SRM 51-40-02; DWG. 111A1001; AND DWG. 144A7100.<BR>CUSTOMER CARD TTG8Q00M7WF8 COMPLETE.;[12] VERIFIED CORRECTIVE ACTION #11

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