# SDR T17A201409308006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2014
- Submitted: September 30, 2014
- Operation: Air carrier
- Aircraft: N885TM
- Make and model: Raythn HAWKER800XP
- Aircraft serial: 258564
- Aircraft time: 8,452 hours, 5,745 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning System
- Condition: Activated
- Location: Cockpit
- Stage of operation: DE
- 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/T17A201409308006

## Discrepancy

DURING INITIAL DESCENT FROM CRUISE AS THE CABIN PRESSURIZATION CONTROL WAS SET TO A LOWER ALTITUDE THERE WAS AN IMMEDIATE & UNCONTROLLED RATE INCREASE OF THE CABIN VSI & CABIN ALTITUDE FOLLOWED SHORTLY BY A CABIN ALTITUDE ANNUNCIATOR & HORN.

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