# SDR CALA2023102503174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2023
- Submitted: October 25, 2023
- Operation: Air carrier
- Aircraft: [N781UA](https://openairdocs.org/aircraft/N781UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26945
- Aircraft time: 99,993 hours, 17,750 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023102503174

## Discrepancy

DESCENDING OUT OF 12K SLIGHT BURNING SMELL ON FD AND FIRST CLASS SMOKE FORMS ATTACHED PERFORMED SMOKE/ODOR IN FLIGHTDECK/CABIN INSP REF AMM 05-51-58. SMELL DISSIPATED AS TROUBLE SHOOTING CONTINUED. COULD NOT DUPLICATE, NO DEFECTS NOTED.

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