Narrative:

I had 15 mins of oxygen when I was within 5-15 NM of my initial approach fix (rlg) when ZDV reported that I would have to hold 60-90 mins. I reported that I could not because I only had 15 mins of oxygen. ZDV asked me where my alternate was and I reported centennial airport in denver, co. ZDV gave me clearance to denver and I read it back. I then declared that I did not have enough oxygen for my alternate. ZDV asked if I wanted to declare an emergency. I stated affirmative, that I had no other choice. Center immediately cleared me for the localizer DME C approach into eagle airport. I performed the full approach and was cleared to land on runway 25 without further incident. When I filed my flight plan, I was told eagle airport was under a special traffic management system. I was assigned XY53 pm MST. If I was not vectored north and west of my initial flight plan I would have arrived on time. I arrived around XZ05 pm MST.

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Original NASA ASRS Text

Title: A CESSNA T210R IN CRUISE THAT WAS REQUESTED BY ARTCC TO HOLD FOR 60-90 MINS, DECLARED AN EMER DUE TO 15 MINS OF OXYGEN SUPPLY REMAINING.

Narrative: I HAD 15 MINS OF OXYGEN WHEN I WAS WITHIN 5-15 NM OF MY INITIAL APCH FIX (RLG) WHEN ZDV RPTED THAT I WOULD HAVE TO HOLD 60-90 MINS. I RPTED THAT I COULD NOT BECAUSE I ONLY HAD 15 MINS OF OXYGEN. ZDV ASKED ME WHERE MY ALTERNATE WAS AND I RPTED CENTENNIAL ARPT IN DENVER, CO. ZDV GAVE ME CLRNC TO DENVER AND I READ IT BACK. I THEN DECLARED THAT I DID NOT HAVE ENOUGH OXYGEN FOR MY ALTERNATE. ZDV ASKED IF I WANTED TO DECLARE AN EMER. I STATED AFFIRMATIVE, THAT I HAD NO OTHER CHOICE. CTR IMMEDIATELY CLRED ME FOR THE LOC DME C APCH INTO EAGLE ARPT. I PERFORMED THE FULL APCH AND WAS CLRED TO LAND ON RWY 25 WITHOUT FURTHER INCIDENT. WHEN I FILED MY FLT PLAN, I WAS TOLD EAGLE ARPT WAS UNDER A SPECIAL TFC MGMNT SYS. I WAS ASSIGNED XY53 PM MST. IF I WAS NOT VECTORED N AND W OF MY INITIAL FLT PLAN I WOULD HAVE ARRIVED ON TIME. I ARRIVED AROUND XZ05 PM MST.

Data retrieved from NASA's ASRS site as of July 2007 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.