<< >> NASA ASRS Report 1378578, August 2016

Captain of a sky diving aircraft reported losing consciousness on a flight at FL250; even though he was on oxygen.

Attributes
ACN	1378578
Time
Date	201608
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Light Transport High Wing 2 Turboprop Eng
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 3000 Flight Crew Type 500
Events
Anomaly	Flight Deck / Cabin / Aircraft Event Illness

Narrative:

Conducting high altitude skydive operations. Jump run was to be at FL250. Pilot and all occupants using supplemental O2. At FL240 I felt like I was not getting enough O2 I increased O2 delivery and [the doctor] onboard checked my blood O2 level which was 97%. At FL240 I made a '2 minutes to jump' call on unicom; and began a left turn to heading of 010. That is my last recollection before realizing that the other pilot on the plane had taken control from the right seat and had dropped jumpers. Aircraft and jumpers landed without incident.

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Original NASA ASRS Text

Title: Captain of a sky diving aircraft reported losing consciousness on a flight at FL250; even though he was on oxygen.

Narrative: Conducting high altitude skydive operations. Jump run was to be at FL250. Pilot and all occupants using supplemental O2. At FL240 I felt like I was not getting enough O2 I increased O2 delivery and [the doctor] onboard checked my blood O2 level which was 97%. At FL240 I made a '2 minutes to jump' call on Unicom; and began a left turn to heading of 010. That is my last recollection before realizing that the other pilot on the plane had taken control from the right seat and had dropped jumpers. Aircraft and jumpers landed without incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.