# SDR SIMA201107404

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2011
- Submitted: March 15, 2011
- Operation: Air carrier
- Aircraft: [N689EC](https://openairdocs.org/aircraft/N689EC), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500853
- Aircraft time: 16,531 hours, 14,750 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Fan
- Part number: 26006881401
- Part serial: 8073
- Condition: Inoperative
- Location: Ahrs
- Stage of operation: CR
- 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/SIMA201107404

## Discrepancy

ON FLIGHT 3693 THE CREW REPORTED A LOUD WHIRRING NOISE THAT BEGAN AT 3000 FEET ON FINAL TO MIA FOLLOWED BY A HOT ELECTRIC WIRING ACRID ODOR DURING THE REMAINDER OF FLIGHT.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  REMOVED AND INSTALLED ATTITUDE HEADING REFERENCE SYSTEM NR 2 FAN IAW EMB 145 AMM 34-21-03.  THE OPERATIONAL CHECK WAS GOOD NO FAULTS NOTED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.