# SDR SWAA2025092216581

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2025
- Submitted: September 22, 2025
- Operation: Air carrier
- Aircraft: [N497WN](https://openairdocs.org/aircraft/N497WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32479
- Aircraft time: 69,054 hours, 41,163 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Drain
- Condition: Misinstalled
- Location: Zone 200
- Component: Window Track, Boeing
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025092216581

## Discrepancy

CLIMBING OUT OF 12000 WE HEARD A LOUD SCREECHING NOISE.(NOISE SO LOUD HARD TO COMMUNICATE WITH HEADSETS ON) NOTED AIRCRAFT WAS NOT PRESSURIZING. NO OTHER INDICATIONS OBSERVED. THE NOISE WENT AWAY @3000 AND AIRSPEED OF 220KTS. NOTE THE SOUND DID NOT RETURN.   FOUND THE FO'S SLIDING WINDOW DRAIN TUBE INCORRECTLY INSTALLED IN WINDOW TRACK. REPOSITIONED THE DRAIN TUBE PROPERLY.PRESSURIZED UP TO 4.5 WITH NO SQUEALS NOTED AT THIS TIME REF 56-12-11

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.