# SDR CA021031003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 24, 2002
- Submitted: November 6, 2002
- Operation: Air carrier
- Make and model: Aerosp AS 355F1
- Registry model: [Aerosp AS 355F1](https://openairdocs.org/model/aerospatiale-as-355f1) (OpenAirDocs)
- Aircraft time: 2,326 hours
- Engine: Allsn 250C20F
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Bearing
- Condition: Worn
- Location: Compressor
- Stage of operation: CR
- How discovered: O
- Nature of condition: W
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA021031003

## Discrepancy

(CAN) AIRCRAFT IN CRUISE FLIGHT. PILOT NOTICED NG FLUCTUATION BETWEEN ENGINES, FOLLOWED BY ENGINE AT NR 2 CHIP LIGHT AND AN UNUSUAL NOISE & HOWL. PILOT SHUTDOWN NR 2 ENGINE AND MADE UNSCHEDULED LANDING AT NEARBY AIRPORT. NR 2 ENGINE COMPRESSOR SAGS FOUND WORN 2 1/2 BEARING IN GEARBOX. ALSO ENGINE COMPRESSOR SAGS FOUND WORN. NO PREVIOUS CHIP LITES REPORTED AND SYSTEM CHECKED OK. AT PREVIOUS 100 HOUR INSPECTION (TIME SINCE INSPECTION 55 HOURS APPROXIMATELY).

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