# SDR 2023F00102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2023
- Submitted: April 4, 2023
- Operation: General aviation
- Aircraft: N390DP
- Make and model: Raythn 390
- Aircraft serial: RB34
- Aircraft time: 3,316 hours, 2,804 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Valve
- Part number: 3903850350003
- Part serial: 0153
- Condition: Failed
- Location: Fuselage, Aft Up
- Part time: 4,430 hours, 3,585 cycles
- Component: Pnuematic Syste, Beech
- Stage of operation: TO
- How discovered: 9
- Nature of condition: M
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023F00102

## Discrepancy

ON TAKEOFF FROM SCOTTSDALE, AZ (KSDL) A LOUD RUSH OF HOT BLEED AIR ENTERED THE COCKPIT. THE TEMPERATURE INCREASED IN A MATTER OF SECONDS. AS A PRECAUTION THE TAKEOFF WAS ABORTED. MAINTENANCE TROUBLESHOT THE SYSTEM AND DETERMINED THAT THE LEFT BI-LEVEL CONTROL VALVE HAD FAILED IN THE OPEN POSITION.

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