Service difficulty report · Bulkhead · Boeing 7377H4

Difficulty date
June 1, 2023
Submitted
July 17, 2023
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
38,123 hours, 23,431 cycles
Part
Bulkhead
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

BS663 COMPOSITE VAPOR BARRIER BULKHEAD IS CRACKED AT WL 152; RBL 32.<[01] IDENTIFIED 663 BULKHEAD R/H VAPOR BARRIER MATERIAL IAW SRM 57-10-10-0I-2 TABLE 2 FIGURE 2 ITEM 4. DAMAGE AT DISCREPANT LOCATION EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 57-10-10-1A-2 PARAGRAPH 4.D(2). DAMAGE IS REPAIRABLE IAW SRM 57-10-10-2R-2 PARAGRAPH 1.C NOTE<BR><BR>REMOVED DAMAGED AND CONTAMINATED PLIES FROM DISCREPANT LOCATION AND CLEANED AREAS IAW SRM 51-70-04-2R-10 PARAGRAPH 4.A-C.;[02] VALIDATED REPAIR PER SRM 51-70-04-2R-10;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 51-70-04-2R-10;[04] FABRICATED REPAIR PLIES USING BMS 9-3H2 LOT#1526805-2 IAW SRM 51-70-04-2R-10 PARA 4.D.<BR>OK TO INSTALL.;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES USING BMS 8-301CL1 LOT#JH2EAA8895; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2441 CAL DUE 08/2023 IAW SRM 51-70-04-2R-10 PARA 4.D-E.;[07] INSPECTED AND VERIFIED CORRECTIVE ACTION 6.;

More about the Boeing 737-7H4