# SDR SWAA2022052797532

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 25, 2022
- Submitted: May 31, 2022
- Operation: Air carrier
- Aircraft: [N479WN](https://openairdocs.org/aircraft/N479WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33990
- Aircraft time: 59,976 hours, 35,850 cycles
- System (JASC): [5314 · Fuselage Main, Keel](https://openairdocs.org/jasc/5314)
- Part: Vapor Barrier
- Condition: Cracked
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022052797532

## Discrepancy

COMPOSITE- R/H VAPOR BARRIER CRACKED. PERFORMED VISUAL INSPECTION AND TAP TEST FOUND CRACK SIZE 10' AT R/H AND CONTAMINATION AT VAPOR BARRIER PER B737 NTM PART 1 51-05-01; STOP DRILL ON CRACK ENDS 0.25'' PER B737 SRM 57-10-10-2R-2 PARAGRAPH(6.B) AND B737SRM51-10-02-0G-0 PARAGRAPH(12.A);PERFORMED DRY OUT ON R/H VAPOR BARRIER DAMAGE AREAS; FOUND NO WATER AS PER B737 SRM 51-70-04-2R-0 PARAGRAPH (4D);REPAIRED CRACK DAMAGE WITH A PERMANENT REPAIR ON R/H VAPOR BARRIER AS PER B737 SRM 51-70-04-2R-10; MATERIALS USED PO#1760049 AND PO#1690463; PRIMED AND TOP COAT R/H VAPOR BARRIER AS PER B737 AMM 51-21-99-300-802 MATERIALS USED PO# 1764903 AND PO#1758674;

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