# SDR UALA2010011500174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2010
- Submitted: January 15, 2010
- Operation: Air carrier
- Aircraft: [N663UA](https://openairdocs.org/aircraft/N663UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27160
- Aircraft time: 71,986 hours, 11,791 cycles
- Engine: Pwa PW4060
- System (JASC): [7732 · Engine Vibration Analyzer](https://openairdocs.org/jasc/7732)
- Part: Monitor
- Part number: 6672M852
- Part serial: 49
- Condition: Faulty
- Location: Eng Vibration
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010011500174

## Discrepancy

NR 2 ENG N1 VIB INDICATION FLUCTUATES WITH EPR CHANGE.  NO VIBES FELT IN STABLE CRUISE.  NO ACTUAL VIB FELT, CREW FELT ISSUE TO BE FAULTY IND. REPLACED AVM UNIT.

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