# SDR UALA2009051101329

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2009
- Submitted: May 14, 2009
- Operation: Air carrier
- Aircraft: [N778UA](https://openairdocs.org/aircraft/N778UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26940
- Aircraft time: 52,646 hours, 9,629 cycles
- Engine: Pwa PW4077
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Fseu
- Part number: 654W00382
- Part serial: 1447
- Condition: Failed
- Location: Nr 1
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009051101329

## Discrepancy

FLAPS FAILED TO EXTEND. FOUND MESSAGES 27-21021 AND 27-20431.  REPLACED FSEU NR 1 IAW MM 27 -51-01. RAN FLAPS TO FULL EXTEND AND BACK. STILL HAS FLAP-SLAT CONTROL 1 MESSAGE ON ECAM.  MESSAGE IS DEFERABLE.  SWAPPED FSEU 1 AND 2, PROBLEM FOLLOWED. DISPLAYED CH 27 FLAP SLAT ON LOWER EICAS, SHOWED FSEU 1 FAILED. REPLACED FSEU 1, MSG CLEARED. SOFTWARE OK.

---
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.