Pilatus Undifferentiated
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Air Traffic Control Issued New Clearance; Flight Crew Overcame Equipment Problem; Flight Crew Took Evasive Action; Flight Crew Requested ATC Assistance / Clarification
Aircraft
During descent from FL240; cleared to FL190; passing FL220 recieved a Caution for ECS fail. Cabin Alt rising; I asked ATC for lower; cleared to 14;000 [feet].  Once cabin reached 10;000 ft.; master warning for cabin alt. I donned O2 mask and continued descent. Approaching 14;000 [feet]; I asked for lower and was told 'I have your request' then stated due to cabin depressurization I WAS descending to 10;000 ft.  ATC aknowledged.  Upon reaching 10;000 ft.; ATC asked if I was in need of assistance. Replied 'no'. I cycled ECS power and system returned to normal.
Pilatus pilot reported descending to a lower altitude after experiencing loss of cabin pressure.