The controller instructed the pilot he was cleared to Colorado Springs Airport via after Fsher to Deberry Two Arrival and to maintain 17,000 feet. The pilot gave the read back and appeared to be coherent.

The controller informed the pilot that there would be a revision to his route and when he was ready to copy to advise the controller. Moments later the pilot informed the controller he was ready to copy the revision.

May 31, 2011 - The FAA has released an audio recording of the pilot who suffered hypoxia at 17,000 feet. On May 17 th a 70 year old pilot and his wife departed San Bernardino, California for a landing in Colorado Springs, Colorado (COS) in a Cirrus SR22 aircraft (N160A). Enroute the pilot was handed off to Denver Center on frequency 118.57.