# SDR ZESA20160102001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2015
- Submitted: January 4, 2016
- Operation: Air carrier
- Aircraft: N504LV
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5369
- Aircraft time: 4,290 hours, 3,711 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Squat Switch
- Part number: S1762
- Condition: Frozen
- Location: Landing Gear
- Part time: 4,290 hours, 3,711 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ZESA20160102001

## Discrepancy

AFTER TAKEOFF THE ACFT DID NOT PRESSURIZE PROPERLY, THE PILOTS ATTEMPTED TO RESET THE PRESSURIZATION CONTROL SEVERAL TIMES THEN THE DECISION WAS MADE TO DIVERT FOR MAINTENANCE.  A TECHNICIAN WAS DISPATCHED TO THE ACFT & ICY SLUSH WAS FOUND ON THE LG SQUAT SWITCHES WHICH WAS BELIEVED TO BE FROZEN.  THE TAKEOFF WAS A FRESHLY PLOWED RUNWAY WHERE SNOW & SLUSH WERE PRESENT.  THE ICE WAS CLEARED & THE SWITCH WAS ACTIVATED, THE SYS WAS OPERATIONALLY CHECKED & THE ACFT WAS TAKEN FOR A MX CHECK FLIGHT WHERE THE SYS FUNCTIONED PROPERLY.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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