# SDR 99ZZZX4480

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 27, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N4123C](https://openairdocs.org/aircraft/N4123C), registered now
- Make and model: Piper PA-34-220T
- Registry model: [Piper PA-34-220T](https://openairdocs.org/model/piper-pa-34-220t) (OpenAirDocs)
- Aircraft serial: 3449042
- Engine: Cont TSIO360RB
- System (JASC): [7322 · Fuel Control/Reciprocating Engines](https://openairdocs.org/jasc/7322)
- Part: Servo
- Part number: RSA5AD
- Condition: Failed
- Location: Fuel Injector
- Component: Precision
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4480

## Discrepancy

ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE.  REMOVED SERVO FROM ENGINE AND INSPECTED IDLE MIXTURE PLATE FOR GALLING, PLATE WAS FOUND GALLED. SERVO SENT TO PRECISION FOR REPAIR.  THIS SERVO HAS ZERO HRS TT SINCE NEW.  ZERO HRS SINCE PRECISION REPAIRED SERVO AT FACTORY.

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