# SDR CA020815001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2002
- Submitted: August 16, 2002
- Operation: Air carrier
- Make and model: Aerosp AS 355F2
- Registry model: [Aerosp AS 355F2](https://openairdocs.org/model/aerospatiale-as-355f2) (OpenAirDocs)
- Aircraft time: 5,557 hours
- Engine: Allsn 250C20R
- System (JASC): [7323 · Turbine Governor](https://openairdocs.org/jasc/7323)
- Part: Drive Shaft
- Condition: Sheared
- Location: Governor
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA020815001

## Discrepancy

(CAN) IN CRUISE FLT, NR 2 ENGINE TORQUE DROPPED BELOW ENGINE TRIM ADJUSTMENT WITH POWER FLUXS.  NR 2 ENGINE THROTTLED BACK FROM FLT TO IDLE. RETURNED TO GATE AS A PRECAUTION.  ENGINE DECELED FROM POINT TO ACTIVATE REIGNITION SYS, & CONTINUED TO SPOOL DOWN TO APPROX 30 PERCENT N1, THROTTLE MOVED TO CUTOFF.  A/C CONTINUED FLT IN OEI CONDITION FOR 30 MINUTES.  PRELIMINARY INVEST SHOWED NO SIGNS OF EXTERNAL DAMAGE, FUEL, OIL, & AIR LINES INTACT,  FUEL QUALITY CLEAN & CLEAR,  FUEL FILTERS & SCREENS W/O MEASURABLE AMOUNT OF DIRT, & NO AIR IN FUEL SYS. NR 2 ENGINE ATTEMPTED START BUT WOULD NOT ACCELERATE PAST 31 PERCENT MARK ON TWO OCCASIONS.

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