# SDR CA990310097

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Dhav DHC8301
- Engine: Pwa PW123
- Propeller: Hamstd 14SF15
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pcu
- Part number: 78249047
- Condition: Misinstalled
- Location: Nr 1 Engine
- Stage of operation: TO
- Nature of condition: W
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990310097

## Discrepancy

(CAN) TAKEOFF WAS REJECTED DUE TO NR 1 ENGINE ONLY PRODUCING 89 PERCENT TORQUE AT THE FIREWALL.  THE AIRCRAFT RETURNED TO GATE WHERE MAINTENANCE INSPECTION REVEALED A BOLT INSTALLED BACKWARDS ON THE PROPELLER CONTROL UNIT, WHICH HAD BEEN REPLACED THE NIGHT BEFORE.  THE BOLT WAS INSTALLED CORRECTLY AND THE AIRCRAFT GROUND CHECKED SERVICEABLE.

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