# SDR QMLA2025081320086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2025
- Submitted: August 14, 2025
- Operation: Air carrier
- Aircraft: [N533LC](https://openairdocs.org/aircraft/N533LC), 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: 0555
- Aircraft time: 8,491 hours, 35,827 cycles
- Engine: Pwa PW206B
- Engine time: 4,571 hours
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Faulted
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2025081320086

## Discrepancy

WHILE AT CRUISE FLIGHT THE NR 1 ENGINE TORQUE BEGAN TO RAPIDLY RISE WITH INCREASED ENGINE NOISE AND RISING ROTOR RPM. DURING THAT SAME TIME THE AIRCRAFT BEGAN A YAWING MOTION.  IMMEDIATELY ADJUSTED POWER AND MANUALLY
ADJUSTED THROTTLE NR 1 TO REGAIN CONTROL AND AIRCRAFT WITHIN LIMITS. ADJUSTED THE LANDING DIRECTION INTO THE HEADWIND AND COMPLETED A MINIMUM SPEED RUN ON LANDING.  REPLACED NR 1 ENGINE.

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