# SDR SIMA20120708009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2012
- Submitted: July 11, 2012
- Operation: Air carrier
- Aircraft: [N600BP](https://openairdocs.org/aircraft/N600BP), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145044
- Aircraft time: 34,243 hours, 28,879 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 4611028900
- Part serial: 70
- Condition: Inoperative
- Location: Recirculation
- 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/SIMA20120708009

## Discrepancy

FOR FLIGHT 4258, THE CREW REPORTED A STRONG ELECTRICAL BURNING ODOR IN THE COCKPIT AT THE GATE.  UNABLE TO DETERMINE THE SOURCE.  THE ODOR DID NOT DISSIPATE UNTIL AFTER COMPLETELY DE-POWERING AIRCRAFT.  ON FURTHER INVESTIGATION,  FOUND ELECTRICAL BURNING ODOR TO DISSIPATE ONCE PACK 1 AND COCKPIT RECIRCULATION FAN WERE SHUTDOWN.   REMOVED AND REPLACED THE NR 1 RECIRCULATION FAN IAW AMM 21-24-01.  OPS CHECKED GOOD.  AIRCRAFT RETURNED TO SERVICE.

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