Reported loss of separation between climbing EA32 and BE90 at FL250.

Attributes
ACN	388877
Time
Date	199712
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pxr
State Reference	AZ
Altitude	msl bound lower : 25000 msl bound upper : 25000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	King Air C90 E90
Operating Under FAR Part	other : other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 3
ASRS Report	388877
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
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	horizontal : 25500 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Very busy period of traffic and training ongoing on right side. Low side asked for higher on EA32 and I gave them FL260. The BE90 was at FL250. The slow rate of climb of the EA32 made the BE90 traffic. I attempted to call low side to get the EA32 stopped at FL240 and got no response. I then called again and still no response. I then yelled the instructions to low side but they were turning the EA32 and the turn wasn't quite tight enough. I believe part of the problem was that the low side was doing a briefing and would not respond to my initial calls. And with the changing of controllers there was a lack of critical communication at a crucial time.

Original NASA ASRS Text

Title: RPTED LOSS OF SEPARATION BTWN CLBING EA32 AND BE90 AT FL250.

Narrative: VERY BUSY PERIOD OF TFC AND TRAINING ONGOING ON R SIDE. LOW SIDE ASKED FOR HIGHER ON EA32 AND I GAVE THEM FL260. THE BE90 WAS AT FL250. THE SLOW RATE OF CLB OF THE EA32 MADE THE BE90 TFC. I ATTEMPTED TO CALL LOW SIDE TO GET THE EA32 STOPPED AT FL240 AND GOT NO RESPONSE. I THEN CALLED AGAIN AND STILL NO RESPONSE. I THEN YELLED THE INSTRUCTIONS TO LOW SIDE BUT THEY WERE TURNING THE EA32 AND THE TURN WASN'T QUITE TIGHT ENOUGH. I BELIEVE PART OF THE PROB WAS THAT THE LOW SIDE WAS DOING A BRIEFING AND WOULD NOT RESPOND TO MY INITIAL CALLS. AND WITH THE CHANGING OF CTLRS THERE WAS A LACK OF CRITICAL COM AT A CRUCIAL TIME.

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.