# SDR UPS08551579

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2008
- Submitted: January 30, 2008
- Operation: Air carrier
- Aircraft: [N464UP](https://openairdocs.org/aircraft/N464UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 28268
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 2156606A
- Part serial: 348
- Condition: Intermittent
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS08551579

## Discrepancy

ATB DUE TO CAPT AND F/O ADI SCREENS BLANKING THEN LOSING COLOR.  GOT A FLT DK EQUIP SMOKE AND RECIRC FAN EICAS MSG.  THEN RECEIVED A EQUIP OVHT EICAS MSG.  SELECTING "ALTN" ON THE EQUIP COOLING SWITCH RESTORED SCREENS T  NORMAL.  REF L/P 927415 NR 1 REPEAT ITEM. CONFIRMED FAULT TO BE NR 2 FLT DECK SMOKE DETECTOR AND REPLACED SAME PER 21-58-19-2.

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