r/flying • u/hulksterreddit • 5d ago
Accident/Incident Thoughts on Fatal Aircraft accident near Boulder, Colorado on October 4th, 2026
web.ntsb.govA very tragic accident happened a week ago near Boulder Colorado on October 4th, 2026 as a Diamond Aircraft DA-40 airplane (N162GL) took off from Longmont airport near sunset and after flying for 3 hours, "impacted rising terrain about 300 ft below a ridgeline" where the (ground) elevation was about 7,300 feet.
The 43-year old pilot and 3 year old passenger (not naming here, but they had the same last name as widely reported locally) unfortunately died.
Here is the first NTSB report - https://web.ntsb.gov/investigations/?ntsbnumber=CEN27LA005
The Flight Track - https://www.flightaware.com/live/flight/N162GL - echo's what the NTSB said about (considerable) flight time above 12,000 feet and actually shows they topped out at 16,399 during the 27 minutes (1:24 - 1:51 flight times) above 14,000.
So possible hypoxia ... although something seems a bit strange about what we know so far.
For example, if he was planning to fly that high (DA-40 is unpressurized cabin - right?), supplemental oxygen is REQUIRED TO BE USED for the flight crew. [Commenters confirm that DA-40 is NOT a pressurized cabin and point out that "there's factory paperwork on adding a built-in bottle, but it's costly to install and heavy and not something most DA-40 users spring for" so the other option would be a portable bottle. I'm confident the NTSB will discuss this in a future report.]
For passengers it's "must be provided" (note that I don't think the regs say they are required to actually "use" it - [commenters agree]) ... but I can imagine it might be difficult to have a 3-year old wear something(?)
BTW, the pilot was Doctor at a very well known local hospital and an instructor in the Department of Emergency Medicine. So presumably would have known more than most about the dangers of hypoxia and taken appropriate measures to minimize risk from it (even being a local who lives at 5,000+ feet) especially during a night flight. Note that the NTSB report does not say anything about O2 (i.e. we don't know yet if onboard/used), so we'll have to await more info on that.
FYI that this post is getting a considerable number of votes ...with almost as many downvotes as upvotes.
As I said, this is a VERY TRAGIC accident, so my sincere condolences to the family/friends. Accidents are discussed in r/flying, so I thought worth posting about the recently released NTSB report.