# SDR 9802736642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N642NW
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21942
- Engine: Pwa JT9D7Q
- System (JASC): [7603 · Power Lever](https://openairdocs.org/jasc/7603)
- Part: Coupling Screw
- Condition: Broken
- Location: Nr 4 Engine
- Stage of operation: TO
- Nature of condition: O
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9802736642

## Discrepancy

AT START OF TAKEOFF ROLL, THE NR 4 ENGINE DID NOT ACCELERATE OR RESPOND TO POWER LEVER INPUTS.  THE TAKEOFF WAS ABORTED AND RETURNED TO THE GATE.  MAINTENANCE FOUND A BROKEN COUPLING SCREW IN THE STRUT AREA.  REPLACED THE SCREW AND A FUNCTIONAL TEST OF THE THRUST LEVER SYSTEM PER MM 76-11-06 WAS NORMAL.

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