# SDR DL757050642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2005
- Submitted: October 25, 2005
- Operation: Air carrier
- Aircraft: [N674DL](https://openairdocs.org/aircraft/N674DL), registered now
- Make and model: Boeing 757232
- Aircraft serial: 25979
- Aircraft time: 46,068 hours, 21,191 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Odor
- Condition: Detected
- Location: Cabin
- Stage of operation: CR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL757050642

## Discrepancy

BRIEF ELECTRICAL BURNING SMELL NOTED BY FLT ATTENDANT AND PASSENGERS APPROX ROWS 28-32.  DURING FLIGHT SMELL DISSIPATED THEN RETURNED ON DESCENT.  MTC IN SJO OPENED AND CHECKED ALL PSU FROM ROW 20-39, FOUND NORMAL CONDITIONS.  OPERATED BOTH A/C PACKS AND RECIRCULATION FANS WITH DOORS CLOSED FOR ONE HOUR, NO SMELL DETECTED.  RAN BOTH ENGINES AND OPERATED ALL CABIN ELECTRICAL SYSTEMS COULD NOT DUPLICATE SMELL.

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