# SDR UIEA2012070400295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2012
- Submitted: July 5, 2012
- Operation: Air carrier
- Aircraft: [N477MC](https://openairdocs.org/aircraft/N477MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29255
- Aircraft time: 58,231 hours, 10,371 cycles
- Engine: Ge CF680C2B1F
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: TX
- 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/UIEA2012070400295

## Discrepancy

DURING PREFLIGHT AND CARGO LOADING; ACRID BURNING ODOR AND LIGHT SMOKE WAS NOTICED IN THE FLIGHT DECK.  OPEN

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