# SDR UPS09B54430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2009
- Submitted: February 3, 2009
- Operation: Air carrier
- Aircraft: [N575UP](https://openairdocs.org/aircraft/N575UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35664
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Part number: 7469691
- Condition: Contaminated
- Location: A/C Bay
- Stage of operation: LD
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS09B54430

## Discrepancy

INSPECTION TYPE:N/A ROLLOUT IN ANC RWY 7R.  RECEIVED THE "CREWREST SMOKE" MSG ON EICAS.  SMOKE WAS SEEN ENTERING THE C/P THRU WINDOW VENTS.  THIS HAPPENED AT 60 KIAS WHILE COMING OUT OF REVERSE.  THERE WAS A LOT OF EXHAUST BILLOWING IN FRONT OF THE ENGINES.  THE ALERT STAYED ON FOR 1 MIN.  REMOVED/INSTALLED ALL 3 COALESCER BAGS REF MM 21-51-05.

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