# SDR AALA201810089052

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2018
- Submitted: October 18, 2018
- Operation: Air carrier
- Aircraft: [N127AA](https://openairdocs.org/aircraft/N127AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6334
- Aircraft time: 13,397 hours, 3,890 cycles
- System (JASC): [7732 · Engine Vibration Analyzer](https://openairdocs.org/jasc/7732)
- Part: Accelerometer
- Condition: Defective
- Location: Zone 400
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201810089052

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: ENGINE N1 VIBRATION CYCLED DURING CLIMB, CRUISE, DESCENT, EVEN DURING IDLE DESCENT. TOTAL CYCLE TIME APPROXIMATELY 3 SECONDS EACH. INSTALLED ACCELEROMETER PER AMM 77-32-15. ACCOMPLISHED RUN PER AMM 71-00-00, ALL N1 INDICATION NORMAL.

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