What was found
VERY LOUD HISSING NOISE AT FL400, CABIN VSI WAS SHOWING A RAPID CLIMB AND BEGAN LOSE PRESSURIZATION. REPLACED PRESSURIZATION CONTROLLER PERFORMED PRESSURIZATION CHECKS NO DEFECTS FOUND HAWKER 400A CH 21-30-00 AND 52-10-00.
- Difficulty date
- September 17, 2020
- Submitted
- September 21, 2020
- Operation
- Air carrier
- Aircraft
- N493TM
- Make and model
- Beech 400A
- Aircraft serial
- RK582
- Aircraft time
- 6,020 hours, 4,503 cycles
- System (JASC)
- 2131 · Cabin Pressure Controller
- Part
- Controller
- Condition
- Failed
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- B
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.