Air carrier X non adherence to ATC clearance. Climb to occupied altitude. Had possible less than standard separation from aircraft Y. Pilot deviation.

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Attributes
ACN	241165
Time
Date	199305
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 19000 msl bound upper : 19400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 2800
ASRS Report	241165
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 5000 flight time type : 2000
ASRS Report	240806
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 24000 vertical : 600
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X in climb from den. We were being held down for faster traffic. We were concerned about being too low to satisfy our drift down requirement. I brought this to ATC's attention and was given 17000 ft then FL180 and the FL190. As we passed through FL190 I told the captain we were only cleared to FL190. He indicated we were cleared to FL200. At the same time we were given a frequency change. I signed on at FL193 or FL194 cleared to FL200. We were told to descend immediately 190. We complied immediately. Supplemental information from acn 240806: I was flying as captain on air carrier X from den to gjt. I believe we had been given clearance to climb to FL200. As we passed through FL190 we were given a frequency change from ZDV for the next sector at ZDV. We signed on the frequency as climbing to FL200. The controller's response was to descend immediately to FL190 for traffic. We promptly complied. ZDV then informed me that there had been a possible loss of separation with another aircraft.

Original NASA ASRS Text

Title: ACR X NON ADHERENCE TO ATC CLRNC. CLB TO OCCUPIED ALT. HAD POSSIBLE LTSS FROM ACFT Y. PLTDEV.

Narrative: ACR X IN CLB FROM DEN. WE WERE BEING HELD DOWN FOR FASTER TFC. WE WERE CONCERNED ABOUT BEING TOO LOW TO SATISFY OUR DRIFT DOWN REQUIREMENT. I BROUGHT THIS TO ATC'S ATTN AND WAS GIVEN 17000 FT THEN FL180 AND THE FL190. AS WE PASSED THROUGH FL190 I TOLD THE CAPT WE WERE ONLY CLRED TO FL190. HE INDICATED WE WERE CLRED TO FL200. AT THE SAME TIME WE WERE GIVEN A FREQ CHANGE. I SIGNED ON AT FL193 OR FL194 CLRED TO FL200. WE WERE TOLD TO DSND IMMEDIATELY 190. WE COMPLIED IMMEDIATELY. SUPPLEMENTAL INFO FROM ACN 240806: I WAS FLYING AS CAPT ON ACR X FROM DEN TO GJT. I BELIEVE WE HAD BEEN GIVEN CLRNC TO CLB TO FL200. AS WE PASSED THROUGH FL190 WE WERE GIVEN A FREQ CHANGE FROM ZDV FOR THE NEXT SECTOR AT ZDV. WE SIGNED ON THE FREQ AS CLBING TO FL200. THE CTLR'S RESPONSE WAS TO DSND IMMEDIATELY TO FL190 FOR TFC. WE PROMPTLY COMPLIED. ZDV THEN INFORMED ME THAT THERE HAD BEEN A POSSIBLE LOSS OF SEPARATION WITH ANOTHER ACFT.

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.