# SDR UPS06546479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2006
- Submitted: March 22, 2006
- Operation: Air carrier
- Aircraft: [N407UP](https://openairdocs.org/aircraft/N407UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23729
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Odor
- Condition: Detected
- Location: Cockpit
- Stage of operation: LD
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS06546479

## Discrepancy

CREW REPORTED AN ACRID ODOR IN THE C/P. CREW DID NOT SEE SMOKE, BUT LOST BOTH CRT'S ON EACH SIDE.   REMOVED AND ISOLATED WIRES FROM F/O'S MARKER BEACON ASSY.  STOWED AND WRAPPED.  SECURED ASSY'S. IAW GMM 3-6-1.  ENTERED INTO DEFERRAL LOG PER MEL 34-32-1.  REF TO M322144.

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