# SDR RAIA960120

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N721TE
- Make and model: Aerosp ATR 72 202
- Registry model: [Aerosp ATR 72 202](https://openairdocs.org/model/aerospatiale-atr-atr-72-202) (OpenAirDocs)
- Aircraft serial: 217
- Engine: Pwa PW124B
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 32448554
- Condition: Failed
- Location: Lt Engine
- Part time: 6,149 hours
- Stage of operation: TO
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RAIA960120

## Discrepancy

STL - FLT 7166 - DURING TAKEOFF ROLL, NR 1 ENGINE WOULD NOT MAKE MORE THAN 39 PERCENT TORQUE.  ALSO, LOAD SQUEAL FROM NR 1 ENGINE.  MAINTENANCE REPLACED HMU, GROUND RUNS GOOD.  ENGINE TT, 7,409.8 HOURS.  (X)

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