# SDR DALA13011319225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2013
- Submitted: March 12, 2013
- Operation: Air carrier
- Aircraft: N925DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53587
- Aircraft time: 33,621 hours, 23,003 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Failed
- Location: Recirculation
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA13011319225

## Discrepancy

PERFORMED AN AIR TURNBACK. DURING INITIAL CLIMBOUT AFT F/A NOTIFIED FLIGHT DECK THAT THERE WAS A BURNING ODOR AND WHITE VISIBLE SMOKE IN THE AFT CABIN.  ODOR DISSIPATED AFTER GALLEY POWER AND CABIN LIGHTS TURNED OFF.   MX TROUBLESHOT IAW FIM R & R RECIRCULATION FAN IAW AMM. OPS CHECKS NORMAL.  FOUND T1-91 READING LIGHT TRANSFORMER, LOCATED AT AFT CABIN TRANSFORMER PANEL MAKING VIBRATING SOUNDS AND SMELLS BURNED.  REPLACED TRANSFORMER T1-91.  REPLACED BOTH COALESCER BAGS.  PERFORMED DUCT BURNOUT.

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