# SDR HDNA2020090300393

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2020
- Submitted: September 3, 2020
- Operation: General aviation
- Aircraft: [N135LL](https://openairdocs.org/aircraft/N135LL), registered now
- Make and model: Urocop EC 135 P2
- Registry model: [Urocop EC 135 P2](https://openairdocs.org/model/eurocopter-deutschland-ec-135-p2) (OpenAirDocs)
- Aircraft serial: 0491
- Aircraft time: 5,959 hours, 17,777 cycles
- Engine: Pwa PW206B2
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Bypass Valve
- Part number: L704A34636001
- Part serial: 10737
- Condition: Defective
- Location: Right Aft Trans
- Part time: 5,959 hours, 17,777 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: M
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HDNA2020090300393

## Discrepancy

THE NR 2 ENGINE OIL TEMPERATURE EXCEEDED THE MAX CONTINUOUS OPERATING RANGE THRESHOLD, WHICH RESULTED IN THE ENGINE BEING PLACED IN THE IDLE DETENT AND THE PILOT PERFORMING A RUN ON LANDING AT HIS INTENDED AIRPORT.  THIS DISCREPANCY WAS TROUBLESHOT TO A DEFECTIVE NR 2 ENGINE OIL BY PASS VALVE.

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