# SDR DJFA2006188

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2006
- Submitted: February 1, 2006
- Operation: Air carrier
- Aircraft: N755TA
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK324
- Aircraft time: 4,123 hours, 3,413 cycles
- Engine: Pwa JT15D5
- Engine time: 4,120 hours, 3,410 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Engine
- Condition: Leaking
- Location: Left
- Part time: 4,120 hours, 3,410 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DJFA2006188

## Discrepancy

THE CREW REPORTED THAT WHILE PERFORMING A MAINTENANCE TEST FLIGHT TO CHECK FLAP ROLL RATE, A HOT OILY SMELL WAS NOTED IN THE COCKPIT AS COMING FROM A WEMAC AIR VENT.  THE SMELL WAS STRONGEST ON TAKEOFF, BUT EVIDENT IN ALL FLIGHT PHASES.  ALL OTHER INDICATIONS, INCLUDING PRESSURIZATION AND ENVIRONMENTAL SYSTEMS WERE NORMAL.  MAINTENANCE REPLACED THE NR 1 ENGINE DUE TO THE DISCOVERY OF OIL IN THE INTERNAL FAN BYPASS.  ALL ENGINE OPERATIONAL CHECKS PERFORMED WERE WITHIN LIMITATIONS.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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