# SDR SH073532

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2007
- Submitted: December 14, 2007
- Operation: Air carrier
- Aircraft: [N314SG](https://openairdocs.org/aircraft/N314SG), registered now
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft serial: 133
- Aircraft time: 4,813 hours, 4,080 cycles
- Engine: Garrtt TFE731*
- System (JASC): [2422 · AC Inverter](https://openairdocs.org/jasc/2422)
- Part: Inverter
- Part number: 501166601
- Part serial: 1375
- Condition: Failed
- Location: Nr 2
- Part time: 4,813 hours, 4,080 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SH073532

## Discrepancy

AFTER ENGINE START THE PILOT ATTEMPTED TO TURN ON THE NR2 A/C INVERTER WITH NO RESULTS. AFTER SEVERAL ATTEMPTS SMOKE COULD BE SMELLED IN THE AIRPLANE, AT THAT TIME THE ENGINES WHERE 
SHUTDOWN AND MAIN BATTERY POWER TURNED OFF. A LINE SERVICE ASSISTANT NOTIFIED THE PILOT THAT SMOKE WAS COMING FROM THE DORSAL FIN INLET. THE PILOT GOT OUT AND OPENED THE AFT TAIL AREA EQUIPMENT/BATTERY COMPARTMENT TO DISCONNECT THE BATTERIES, THIS AREA WAS ALSO FULL OF SMOKE. AFTER REMOVING THE NR 2 FAILED INVERTER, BLACK DISCOLORATION FROM THE COOLING VENTS COULD BE SEEN AND A BAD SMELL WAS PRESENT.

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