# SDR DALA14021785640

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2014
- Submitted: April 9, 2014
- Operation: Air carrier
- Aircraft: [N540US](https://openairdocs.org/aircraft/N540US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26487
- Aircraft time: 51,065 hours, 20,352 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Failed
- Location: Recirculation
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA14021785640

## Discrepancy

CREW DECLARED EMERGENCY FOR LIGHT SMOKE/HEAVY ACRID ODOR IN COCKPIT AND FORWARD CABIN ON APPROACH, LANDING, & TAXI IN.  REPLACED RT RECIRCULATION FAN AND FILTER.  INSPECTED RIGHT FAN CHECK VALVE, CHECKS NORMAL. NO FAULTS FOUND ON VMU.

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