# SDR AALA202012219037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2020
- Submitted: December 22, 2020
- Operation: Air carrier
- Aircraft: [N885NN](https://openairdocs.org/aircraft/N885NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31139
- Aircraft time: 26,905 hours, 11,087 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Tube
- Condition: Debonded
- Location: R2 Window
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202012219037

## Discrepancy

AIRCRAFT WAS GROUNDED.  LOUD SQUEAL FROM R2 WINDOW AT 16,000 FT, FLIGHT DIVERTED TO BOS; ON DESCENT, SQUEAL STOPPED AT 8500 FT.  FOUND CONDENSATION TUBE DISBONDED FROM U-CHANNEL.  REBONDED TUBE IAW AMM 56-11-11.

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