Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
May 31, 2023
Submitted
June 29, 2023
Operation
Air carrier
Aircraft
N295WN
Make and model
Boeing 7377H4
Aircraft serial
32541
Aircraft time
51,370 hours, 30,880 cycles
Part
Vapor Barrier
Part number
UNKNOWN
Condition
Debonded
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

R/H VAPOR BARRIER HAS DISBONDED REPAIRS BS663 RBL 35 WL 178<[01] IDENTIFIED R/H VAPOR BARRIER IAW SRM 57-10-10-0I-2 TABLE 2; FIG 2; ITEM 4.<BR><BR>DAMAGE IS BEYOND ALLOWABLE DAMAGE LIMITS IAW SRM 57-10-10-1A-2 PARA 4.D (1).<BR><BR>DAMAGE WILL BE REPAIRED IAW SRM 51-70-04-2R-10 AS DIRECTED IAW SRM 57-10-10-2R-2 PARA 1.B.<BR><BR>REMOVED DAMAGED PLIES AND TAPER SANDED AREA IAW SRM 51-70-04-2R-10 PARA 4.A - 4.C; WITH NO CONTAMINATION NOTED.;[02] VALIDATED APPLICABILITY OF REPAIR TO BE COMPLETED IAW SRM 51-70-04-2R-10.;[03] VERIFIED CORRECTIVE ACTION 1 AND 2<BR><BR>VERIFIED MEASUREMENT TABLE;[04] FABRICATED REPAIR PLIES FOR FWD AND AFT SURFACES USING BMS 9-3 ST1581 LOT# 1526805-2 IAW SRM 51-70-04-2R-10 PARA 4.D.<BR><BR>OK TO INSTALL REPAIR PLIES.;[05] VERIFIED CORRECTIVE ACTION 4; OK TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES TO FWD AND AFT SURFACES USING BMS 8-301 CL1 LOT# JH2EAA8895; VACUUM BAGGED REPAIR; AND COMPLETED SUCCESSFUL BLEED DOWN TEST ALL IAW SRM 51-70-04-2R-10 PARA 4.D & 4.E.<BR><BR>VACUUM GUAGE ID: ATS2441 / CAL DUE DATE: 08/2023;[12] RESTORED THE FINISH USING BMS10-103 PRIMER & BMS10-60 ENAMEL IAW SRM 51-70-04-2R-10 PARA 4. H. PER GENERAL REPAIR SECTION SRM 51-70-04-2R-0 PARA 4. P. <BR>R/H VAPOR BARRIER REPAIRED IAW SRM 51-70-04-2R-10;[13] VERIFIED CORRECTIVE ACTION 12;[14] VERIFIED CORRECTIVE ACTION 12

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