# SDR 98ZZZX2121

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N4616C](https://openairdocs.org/aircraft/N4616C), registered now
- Make and model: Cessna T210N
- Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (OpenAirDocs)
- Aircraft serial: 21063576
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Resistor
- Part number: RH50
- Condition: Burned
- Location: Door Seal System
- Component: 396020
- Stage of operation: CL
- Nature of condition: B
- Precautionary procedure: H, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX2121

## Discrepancy

THE PILOT NOITCED SMOKE IN THE COCKPIT APROXIMATELY 6 MINUTES AFTER TAKEOFF.  ELECTRICAL POWER WAS TURNED OFF AND THE PILOT RETURNED TO THE AIRPORT WITHOUT FURTHER INCIDENT.  THE PILOT AND ONE PASSENGER WERE NOT INJURIED EXCEPT FOR A SMALL SOLDER BURN ON THE PILOT'S UPPER FOOT.  INVESTIGATION DETERMINED THAT A PASSENGER SEAT BELT DAMAGED THE INFLATABLE PNEUMATIC DOOR SEAL.  EXCESSIVE SEAL LEAKAGE CAUSED THE ELECTRIC PNEUMATIC PUMP TO EXCEED ITS DUTY CYCLE OVERHEATING THE PUMP VOLTAGE DROPPING RESISTORS.

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