# SDR UALA2009042201174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2009
- Submitted: April 24, 2009
- Operation: Air carrier
- Aircraft: [N777UA](https://openairdocs.org/aircraft/N777UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26916
- Aircraft time: 56,291 hours, 10,594 cycles
- Engine: Pwa PW4077
- System (JASC): [2425 · AC Indicating System](https://openairdocs.org/jasc/2425)
- Part: Filter
- Condition: Clogged
- Location: Nr 1 Bug
- Stage of operation: IN
- How discovered: O
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009042201174

## Discrepancy

FOUND NR 1 ENGINE BUG FILTER CLOGGED ON ELECTRIC PAGE.  REPLACED FILTER AND O-RING.  RAN ENGINE, OPS CHECK 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.