# SDR 9717126730

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N630US
- Make and model: Boeing 747-2J9F
- Registry model: [Boeing 747-2J9F](https://openairdocs.org/model/boeing-747-2j9f) (OpenAirDocs)
- Aircraft serial: 21668
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve Bushing
- Part number: 7371097
- Condition: Under Sized
- Location: Nr 4 Engine
- Part time: 26,359 hours
- Stage of operation: TO
- Nature of condition: R
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9717126730

## Discrepancy

DURING TAKEOFF, THE NR 4 ENGINE DID NOT REACH TAKEOFF POWER.  ABORTED TAKEOFF AND RETURNED TO THE GATE.  REPLACED THE HIGH STAGE CONTROL AND VALVE.  OPERATIONAL CHECK GOOD.

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