# SDR SWAA2025102218192

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2025
- Submitted: October 22, 2025
- Operation: Air carrier
- Aircraft: [N8508W](https://openairdocs.org/aircraft/N8508W), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 38814
- Aircraft time: 29,735 hours, 15,000 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Vapor Barrier
- Condition: Cracked
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025102218192

## Discrepancy

BS 663 VAPOR BARRIER HAS A CRACK INDICATION AT APPROXIMATELY RBL 9.  CUT AND REMOVED CRACKED SECTION OF VAPOR BARRIER ATTACH ANGLE PER SRM 57-10-10-2R.;[02] CW INSPECTION OF STEP #1. FABRICATED REPAIR ANGLE PER SRM 57-10-10-2R-5,  C/W INSPECTION OF LINE #3 FABRICATION OF REPAIR ANGLE,  NO OVERSIZE FASTENERS ARE INSTALLED IN THE WING LOWER SKIN; LOWER CHORD & BL.6.0 KEELBEAM STIFFENER IAW SRM 57-10-10-2R-5.  PERFORMED OPEN HOLE HIGH FREQUENCY EDDY CURRENT INSPECTION (HFEC) OF EXISTING FASTENER HOLES IAW NDT MANUAL PART 6; 51-00-00 PROCEDURE 16. NO DEFECT NOTED.

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