# SDR UALA2011050502215

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2011
- Submitted: May 27, 2011
- Operation: Air carrier
- Aircraft: [N771UA](https://openairdocs.org/aircraft/N771UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26932
- Aircraft time: 62,472 hours, 11,501 cycles
- Engine: Pwa PW4077
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Clamp
- Condition: Deteriorated
- Location: Adp Air Duct
- Stage of operation: NR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011050502215

## Discrepancy

LOUD WHINNING SOUND STILL UNDER FLOORBOARD NEAR 3R.   PER INBD CREW COMMENT: FLOOR VIBRATION AND NOISE BETWEEN DOORS 3R AND 3L, FROM 3 ROWS FWD OF DOORS TO 5 ROWS BACK.  INSPECTED ALL DUCTS IN AFT PIT AND WHEEL WELLS.  FOUND ADP AIR DUCT CLAMP DETERIORATED AT LT WHEEL WELL (AFT FIRE WALL).  REPLACED CLAMP.

---
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.