# SDR SIMA20130502004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2013
- Submitted: May 3, 2013
- Operation: Air carrier
- Aircraft: [N638AE](https://openairdocs.org/aircraft/N638AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145172
- Aircraft time: 32,710 hours, 29,820 cycles
- System (JASC): [2340 · Interphone/Passenger Announcement (PA) System](https://openairdocs.org/jasc/2340)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20130502004

## Discrepancy

ON FLIGHT 3250 THE CREW REPORTED THAT ON TAXI-IN, INTPH 2 CB POPPED (33B).  THE CREW NOTICED AN ELECTRICAL BURNING ODOR.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  CHECKED WIRE HARNESS' BEHIND GLARESHIELD PTT SWITCH, F/O HEADSET JACK PANEL, #2 ACP.  NO EVIDENCE OF BROKE WIRES, NOR BURNT INSULATION, NOR ARCING.  ABLE TO RESET CIRCUIT BREAKER (33B INTPH 2).  BENT AND TWISTED ALL WIRE HARNESS' AND CIRCUIT BREAKER STAYED-IN.  FIRST OFFICER’S AUDIO SYSTEM OPERATIONAL CHECK WAS GOOD IAW AMM 23-51-00.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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