# SDR HDNA201501230002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2015
- Submitted: January 27, 2015
- Operation: Air carrier
- Aircraft: [N131LF](https://openairdocs.org/aircraft/N131LF), registered now
- Make and model: Urocop BK117C1EURO
- Aircraft serial: 9096
- Aircraft time: 3,065 hours
- Engine: Tmeca ARRIEL1E2
- Engine time: 1,141 hours
- System (JASC): [7712 · Engine BMEP/Torque Indicating](https://openairdocs.org/jasc/7712)
- Part: Torque Sensor
- Part number: 955165750
- Part serial: 645
- Condition: Unknown
- Location: Rt Engine
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HDNA201501230002

## Discrepancy

UPON APPROACH TO DESTINATION HELIPAD & AS POWER REDUCED BELOW 80% N1, NR 2 ENG WAS NOTED TO DROP TO 0% TORQUE WITH ASSOCIATED, ENG SPLIT, CAUTION.  ATTEMPTS TO REJOIN FLI NEEDLES WITH COLLECTIVE N2 TRIM SWITCH MET WITH NEGATIVE RESULTS.  OEI FLIGHT CONDITIONS ESTABLISHED, APPROACH ABORTED.  PILOTS CHECKLIST EMER & MALFUNCTION PROCEDURES FOLLOWED FOR ENG UNDER SPEED WHILE DIVERTING.  MX NOTIFIED.

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