Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
June 29, 2022
Submitted
July 19, 2022
Operation
Air carrier
Aircraft
N258WN
Make and model
Boeing 7377H4
Aircraft serial
32516
Aircraft time
52,954 hours, 31,553 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Center Wing
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

AT WING CENTER SECTION REAR SPAR VAPOR BARRIER UPPER ATTACH ANGLE IS CRACKED; STA. 663 LBL 7.0' APPROX. / [01] REMOVED X8 FASTENER AT WING SECTION REAR SPAR VAPOR BARRIER UPPER ATTACHED ANGLE STA 663 APPROX LBL 7 REF B737-700 SRM 51-40-02-0G-0 AND SRM 57-10-10-2R-5 FIGURE 202 DETAIL (B).;[02] PERFORMED HFEC HOLE PROBE INSPECTION ON ALL REMOVED FASTENER LOCATIONS IAW NDTM PART 6; 51-00-00; PROCEDURE 16. NO CRACKS. [NORTEC 600 ; B/C 166316 ; CALIB.DUE- 10/22];[03] FABRICATED NEW PART REPLACEMENT ANGLE 2024-T3.063 AND SPLICE ANGLE 2024T3.071 FOR LEFT WING SECTION REAR SPAR VAPOR BARRIER UPPER ATTACHED ANGLE STA 663 APPROX LBL 7 REF B737-700 SRM 57-10-10-2R-5 TABLE 201 REPAIR 5;[08] PARTIALLY DRILLING REPLACEMENT ANGLE AND SPLICE ANGLE PER B737-700 SRM 51-40-05-0G-0;[09] DRILLED REPLACEMENT ANGLE AND SPLICE ANGLE PER B737-700 SRM 51-40-05-0G-0 AND SRM 57-10-10-2R-5 FIGURE 202.;[16] INSTALLED AT WING CENTER SECTION REAR SPAR VAPOR BARRIER UPPER ATTACH ANGLE STA 663 LBL 7.0' APROXIMATELY REF B 737-700 SRM 57-10-10-2R-5. WORK WAS ACCOMPLISHED BY TECHNICIAN JORGE LINDERO EMPL # 34913 AND YOESLAY ESTEVEZ EMPL # 33004. PENDING CAP SEAL;

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