Air traffic communications recorded on 16 November 2012 and released in a new audio file on 6 March provide an edge-of-the-seat experience of hypoxia incapacitation.
The aircraft involved was a Piaggio P180 Avanti twin turbo, tail # N501PM, which had just departed Dallas, Texas (KDFW) heading to Michigan.
The recording begins with Fort Worth Center (ZFW) controller LouElla Hollingsworth instructing One Papa Mike to climb from FL270 to FL310.
Hollingsworth received the NATCA Medal of Safety and was recently interviewed on TV news programs. The links below include streaming video with more of the story.
13 March, CBS News interview
14 March, ABC News interview
This incident is not recorded in the ASRS, ASIAS, or NTSB databases.