# SDR CA100614002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2010
- Submitted: January 4, 2011
- Operation: Air carrier
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft time: 8,298 hours
- Engine: Pwa JT15D4
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Squat Switch
- Part number: 41EN496
- Condition: Inoperative
- Location: Left
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA100614002

## Discrepancy

FLIGHT CREW HAD UNCOMMANDED DEPRESSURIZATION FOLLOWING REDUCTION OF POWER AT CRUISE.  PROBLEM FOUND TO BE LT SQUAT SWITCH POSITON NR 5 DID NOT CHANGE TO FLIGHT MODE.  SWITCH REPLACED.

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