# SDR CA980317009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 1998
- Submitted: January 19, 2001
- Operation: Air carrier
- Make and model: Dhav DHC8102
- Aircraft time: 22,462 hours
- Engine: Pwa PW120A
- Propeller: Hamstd 14SF7
- System (JASC): [7322 · Fuel Control/Reciprocating Engines](https://openairdocs.org/jasc/7322)
- Part: Hydro Mech Unit
- Part number: 7863916
- Condition: Faulty
- Location: Nr 1 Engine
- Part time: 9,552 hours, 13,116 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA980317009

## Discrepancy

(CAN) DURING CLIMB AT FL200 NR 1 ENGINE TORQUE STARTED TO DECREASE. WITH NR 1 ENGINE POWER LEVER FULLY FORWARD NR 1 ENGINE TORQUE WAS 20 PERCENT LOWER THAN NR 2 ENGINE. AIRCRAFT DIVERTED. HYDRO MECHANICAL UNIT (HMU) AND FUEL PUMP REPLACED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.