# SDR 95UAL900344

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N771UA](https://openairdocs.org/aircraft/N771UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26932
- Engine: Pwa PW4077
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: B-Nut
- Part number: 251W315012
- Condition: Loose
- Location: Rudder Control
- Stage of operation: CR
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95UAL900344

## Discrepancy

SMOKE AND ODOR IN CABIN.  SMOKE DUE TO INGESTION OF HYDRAULIC FLUID INTO APU AIR INLET.  LOOSE B-NUT ON RETURN LINE FOR RUDDER LOWER POWER CONTROL UNIT DETERMINED TO BE SOURCE OF LEAK.  B-NUT TIGHTENED, OIL RESIDUE CLEANED UP AND PNEUMATIC AND AIR CONDITIONING DUCTING PURGED USING HIGH TEMPERATURE AIR.

---
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.