ARTCC radar controller issued a climb clearance ot an aircraft. The aircraft was climbing through FL320 and controller issued an immediate descent and a turn to avoid another aircraft at FL330. Standard separation was lost.

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Attributes
ACN	154957
Time
Date	199008
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ocs
State Reference	WY
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc tower : phx
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 10000 flight time type : 727
ASRS Report	154957
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 225 flight time total : 4500 flight time type : 2000
ASRS Report	154955
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were cleared from FL310 to FL350. Passing FL320 controller issued a clearance for an immediate descent to FL310 and also issued an immediate heading change to us and another aircraft who was at FL330. We saw the other aircraft pass over us while we were leveling at FL310.

Original NASA ASRS Text

Title: ARTCC RADAR CTLR ISSUED A CLIMB CLRNC OT AN ACFT. THE ACFT WAS CLIMBING THROUGH FL320 AND CTLR ISSUED AN IMMEDIATE DESCENT AND A TURN TO AVOID ANOTHER ACFT AT FL330. STANDARD SEPARATION WAS LOST.

Narrative: WE WERE CLRED FROM FL310 TO FL350. PASSING FL320 CTLR ISSUED A CLRNC FOR AN IMMEDIATE DSNT TO FL310 AND ALSO ISSUED AN IMMEDIATE HDG CHANGE TO US AND ANOTHER ACFT WHO WAS AT FL330. WE SAW THE OTHER ACFT PASS OVER US WHILE WE WERE LEVELING AT FL310.

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.