# SDR SWAA2026021167393

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2026
- Submitted: February 11, 2026
- Operation: Air carrier
- Aircraft: [N8850Q](https://openairdocs.org/aircraft/N8850Q), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67498
- Aircraft time: 9,839 hours, 5,358 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Drain Valve
- 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/SWAA2026021167393

## Discrepancy

LOWER FUSELAGE SKIN HAD THREE BILGE DRAIN VALVES CRACKED BS 420, 500A & 500G.   R & R THE THREE BILGE DRAIN VALVES IAW AMM 53-31-03-000-801 AND AMM 53-31-03-400-801.   ACCOMPLISHED CABIN PRESSURE LEAK TEST IAW TASK CARD 821-PRD-01-01 (TTG8Q00MBMAW).  NO LEAKS NOTED.

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