# SDR UPS01535632

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2001
- Submitted: April 20, 2001
- Operation: Air carrier
- Aircraft: [N451UP](https://openairdocs.org/aircraft/N451UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27739
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Switch
- Condition: Failed
- Location: Left
- Stage of operation: IN
- How discovered: C
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS01535632

## Discrepancy

ENG START MAIN CARGO SMOKE DETECTION INDICATED SMOKE ALONG WITH ACRI D ODOR IN COCKPIT     T/S TO LEFT HYDRAULIC ACMP SWITCH FAILED R&R SWITCH

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