Accident Cirrus SR22T N325JK,
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ASN Wikibase Occurrence # 203780
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Date:Wednesday 3 January 2018
Time:19:06 LT
Type:Silhouette image of generic S22T model; specific model in this crash may look slightly different    
Cirrus SR22T
Owner/operator:Abide Aviation LLC
Registration: N325JK
MSN: 1290
Year of manufacture:2016
Total airframe hrs:426 hours
Engine model:Continental TSIO-550-K1B
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Destroyed
Location:Gulf of Mexico -   United States of America
Phase: En route
Departure airport:Oklahoma City-Wiley Post Airport, OK (PWA/KPWA)
Destination airport:Georgetown Municipal Airport, TX (KGTU)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot was in cruise flight at 19,000 ft mean sea level when he became unresponsive to air traffic control. Military pilots dispatched to intercept the airplane reported that the pilot was seated upright with his head tilted back against his seat and was unresponsive. The airplane continued on its established course at 19,000 ft over the Gulf of Mexico, where radar contact was lost about 3.75 hours after the pilot's last communication with air traffic control.

The engine likely lost total power due to fuel exhaustion and the airplane descended into the water.

The airplane was equipped with a hypoxia recognition system which was designed to descend the airplane to a lower altitude in the event of pilot incapacitation. Given the altitude of the accident airplane, the system should have activated about 17 minutes after the pilot's last input or interaction with the system. Following the accident, the manufacturer identified a condition under which uncommanded inputs could be made to the airplane's avionics, which could interfere with the normal function of the hypoxia recognition and automated descent features; however, the reason for the accident airplane's continued flight at 19,000 ft could not be determined, as the airplane was not recovered.

The last few transmissions by the pilot to air traffic control illustrated a degradation in communication consistent with incapacitation. Given this interaction with the pilot and the lack of response from the pilot when the airplane was intercepted, it is likely that the pilot became incapacitated due to hypoxic hypoxia.

Probable Cause: The pilot's incapacitation resulted in impact with the Gulf of Mexico. The reason the hypoxia recognition system did not descend the airplane as designed could not be determined as the airplane was not located.

Accident investigation:
Investigating agency: NTSB
Report number: CEN18FA400
Status: Investigation completed
Duration: 3 years and 7 months
Download report: Final report



FAA register:



Revision history:

04-Jan-2018 07:03 Copi Added
04-Jan-2018 07:27 copi Updated [Cn, Source, Narrative]
04-Jan-2018 09:33 Aerossurance Updated [Location, Narrative]
04-Jan-2018 09:34 Aerossurance Updated [Aircraft type]
04-Jan-2018 09:40 harro Updated [Source, Narrative]
04-Jan-2018 18:07 Geno Updated [Time, Operator, Total occupants, Other fatalities, Source, Damage]
05-Jan-2018 01:26 Geno Updated [Source]
05-Jan-2018 09:48 copi Updated [Total fatalities, Source, Damage]
07-Jan-2018 19:48 Anon. Updated [Source, Narrative]
05-May-2018 12:28 rvargast17 Updated [Damage]
09-Jul-2022 12:41 ASN Update Bot Updated [Time, Other fatalities, Country, Departure airport, Destination airport, Source, Narrative, Category, Accident report]

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