ATC intervened when flight crew of an medium large transport was only part way in their previously cleared climb due to an operational error they were instructed to return to their previous altitude due to conflicting traffic.

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Attributes
ACN	373355
Time
Date	199707
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cle
State Reference	OH
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure other enroute airway : cle
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air taxi
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 9000
ASRS Report	373355
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X flight departed cle on jul/mon/97 at XA16Z. We departed to the southwest under radar vectors. We were given 10000 ft and then shortly afterwards reclred to 11000 ft. We were passing 10800 ft, when the departure control from cleveland told us to maintain 10000 ft. His voice was elevated with the 'oh shit.' factor. We had conflicting traffic at approximately 10 O'clock position at 11000 ft. I replied that we were cleared to 11000 ft and we would descend immediately to 10000 ft. A min later, the lifeguard flight passed over us at 11000 ft. I asked the controller, after the traffic had passed, if we set off any alarms and did I need to call him upon my arrival in memphis. He replied there were no alarms set off and I did not need to call him. His voice sounded unconcerned, but I thought it a little too close and it caused me concern. I'm sure I had more than normal elevation in blood pressure.

Original NASA ASRS Text

Title: ATC INTERVENED WHEN FLC OF AN MLG WAS ONLY PART WAY IN THEIR PREVIOUSLY CLRED CLB DUE TO AN OPERROR THEY WERE INSTRUCTED TO RETURN TO THEIR PREVIOUS ALT DUE TO CONFLICTING TFC.

Narrative: ACR X FLT DEPARTED CLE ON JUL/MON/97 AT XA16Z. WE DEPARTED TO THE SW UNDER RADAR VECTORS. WE WERE GIVEN 10000 FT AND THEN SHORTLY AFTERWARDS RECLRED TO 11000 FT. WE WERE PASSING 10800 FT, WHEN THE DEP CTL FROM CLEVELAND TOLD US TO MAINTAIN 10000 FT. HIS VOICE WAS ELEVATED WITH THE 'OH SHIT.' FACTOR. WE HAD CONFLICTING TFC AT APPROX 10 O'CLOCK POS AT 11000 FT. I REPLIED THAT WE WERE CLRED TO 11000 FT AND WE WOULD DSND IMMEDIATELY TO 10000 FT. A MIN LATER, THE LIFEGUARD FLT PASSED OVER US AT 11000 FT. I ASKED THE CTLR, AFTER THE TFC HAD PASSED, IF WE SET OFF ANY ALARMS AND DID I NEED TO CALL HIM UPON MY ARR IN MEMPHIS. HE REPLIED THERE WERE NO ALARMS SET OFF AND I DID NOT NEED TO CALL HIM. HIS VOICE SOUNDED UNCONCERNED, BUT I THOUGHT IT A LITTLE TOO CLOSE AND IT CAUSED ME CONCERN. I'M SURE I HAD MORE THAN NORMAL ELEVATION IN BLOOD PRESSURE.

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.