# SDR CHQA200900119

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2009
- Submitted: May 4, 2009
- Operation: Air carrier
- Aircraft: N264SK
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145221
- Aircraft time: 23,243 hours, 18,520 cycles
- Engine: Allsn AE3007A
- Engine time: 22,787 hours, 16,857 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Disconnected
- Stage of operation: CL
- How discovered: O
- Nature of condition: M
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA200900119

## Discrepancy

FLIGHT 5880, IAH TO BTR - DURING CLIMB-OUT AT APPROXIMATELY FL030, THE FLIGHT CREW RECEIVED A NR 1 AHRS OVERHEAT MESSAGE.  THE QRH WAS FOLLOWED AND IT WAS DECIDED TO RETURN TO IAH WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT.  MAINTENANCE RE-CONNECTED THE FRONT VENT FAN AND THE AHRS OVERHEAT MESSAGE CLEARED.

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