# SDR 99ZZZX3178

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N6491H](https://openairdocs.org/aircraft/N6491H), registered now
- Make and model: Cessna T207A
- Registry model: [Cessna T207A](https://openairdocs.org/model/cessna-t207a) (OpenAirDocs)
- Aircraft serial: 20700543
- System (JASC): [7800 · Engine Exhaust System](https://openairdocs.org/jasc/7800)
- Part: Controller
- Part number: 1650040502
- Condition: Malfunctioned
- Location: Exhaust
- Part time: 1,200 hours
- Stage of operation: TO
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3178

## Discrepancy

DURING TAKEOFF ROLL, A LOSS OF MANIFOLD PRESSURE OCCURRED OF APPROXIMTAELY 10 IN HG.  TAKEOFF ABORTED WITHOUT INCIDENT.  DURING GROUND RUN AND TROUBLESHOOTING, THE PROBLEM WAS DUPLICATED AND DETERMINED TO BE A STICKING WASTEGATE CONTROLLER VALVE.  THE CONTROLLER ASSY WAS REPLACED.

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