# SDR 2008UALA05927

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2008
- Submitted: October 2, 2008
- Operation: Air carrier
- Aircraft: [N666UA](https://openairdocs.org/aircraft/N666UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29238
- Aircraft time: 35,974 hours, 10,093 cycles
- Engine: Pwa PW4056
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Bypass Valve
- Part number: S256T0058
- Condition: Faulty
- Location: T/E Flap
- Stage of operation: IN
- How discovered: C
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA05927

## Discrepancy

ALTERNATE T/E FLAP DRIVE ELECTRIC MOTOR RUNS BUT DOES NOT TURN GEARBOX TO EXTEND FLAPS.  REPLACED T/E FLAP BYPASS VALVE.  OP CHECKS NORMAL.

---
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.