ZLA controller experienced operational error at FL320 with climbing and en route aircraft.

Attributes
ACN	633978
Time
Date	200410
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : blh.vortac
State Reference	CA
Altitude	msl single value : 32000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zla.artcc
Make Model Name	Gulfstream IV
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar pilot : private pilot : instrument
Experience	controller radar : 7 controller time certified in position1 : 6 flight time total : 200
ASRS Report	633978
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 26
ASRS Report	633977
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar other controllera other controllerb
Resolutory Action	controller : issued new clearance controller : issued alert flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 19800 vertical : 1700
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft #1 was told he needed to be level at FL330 in 15-20 mi for opposite direction aircraft #2 at FL310. He said he could do that, but then stopped his climb at FL320 without telling me. I noticed the lack of climb in the data block and asked him his altitude, then descended the other aircraft (#2) and turned #1 aircraft 30 degrees left.

Original NASA ASRS Text

Title: ZLA CTLR EXPERIENCED OPERROR AT FL320 WITH CLBING AND ENRTE ACFT.

Narrative: ACFT #1 WAS TOLD HE NEEDED TO BE LEVEL AT FL330 IN 15-20 MI FOR OPPOSITE DIRECTION ACFT #2 AT FL310. HE SAID HE COULD DO THAT, BUT THEN STOPPED HIS CLB AT FL320 WITHOUT TELLING ME. I NOTICED THE LACK OF CLB IN THE DATA BLOCK AND ASKED HIM HIS ALT, THEN DSNDED THE OTHER ACFT (#2) AND TURNED #1 ACFT 30 DEGS L.

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.