Service difficulty report · Vapor Barrier · Boeing 7377BD

Difficulty date
April 14, 2022
Submitted
May 10, 2022
Operation
Air carrier
Aircraft
N7736A
Make and model
Boeing 7377BD
Aircraft serial
35109
Aircraft time
50,096 hours, 25,534 cycles
Part
Vapor Barrier
Condition
Cracked
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

B.S. 663 VAPOR BARRIER IS CRACKED AT R.B.L. 42; W.L. 155 / [01] IDENTIFIED PART AND MATERIAL IAW SRM 57-10-10-0I-2; FIGURES 1-2; TABLE 2; ITEM [4].<BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-10-10-1A-2 PAR 4.D (1) (A) 1).<BR>DAMAGE WILL BE REPAIRED IAW SRM 51-70-04-2R-10 AS DIRECTED PER SRM 57-10-10-2R-2 PAR 1.C 'NOTE'.;[02] VALIDATED APPLICABILITY OF REPAIR SRM 51-70-04-2R-10.;[03] REMOVED ALL DAMAGED PLIES; CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES FROM BMS 9-3H2 LOT#1475360-2 IAW SRM 51-70-04-2R-10 PARA 4A-D.<BR>OK TO INSTALL REPAIR PLIES.;[04] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1; 2 AND 3. OKAY TO INSTALL REPAIR PLIES PER SRM 51-70-04-2R-10.;[05] INSTALLED REPAIR PLIES USING BMS 8-301CL1 LOT#JH1GAA7833; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2441 S/N:UNKNOWN IAW SRM 51-70-04-2R-10 PARA 4D-E.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTION 5. 5X5 LEAK CHECK PASSED PER SRM 51-70-04-2R-10.;[07] CURED REPAIR PLIES; UNBAGGED AND LIGHTLY SANDED IAW SRM 51-70-04-2R-10 PARA 4F; H.<BR>USED THERMOMETER ID:ATS2209 S/N:43300739WS;[08] INSPECTED AND VERIFIED CORRECTIVE ACTION 7.;[09] POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. TOOL E650 ATS2342.;[10] REFINISHED REPAIR AREA IAW SRM 51-70-04-2R-10 PAR 4.H.;[11] VERIFIED RII STEPS COMPLETE;[12] VERIFIED CORRECTIVE ACTION 10 MEASUREMENT TABLE VERIFIED

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