ARTCC radar controller turned a KC10 to a 270 degree heading to avoid an air carrier CL65 in the holding pattern at ott. Military pilot questioned the turn before executing it and less than standard separation occurred.

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Attributes
ACN	399399
Time
Date	199804
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ott
State Reference	MD
Altitude	msl bound lower : 24000 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	other
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	other : other
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 3 controller radar : 9
ASRS Report	399399
Person 2
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : radar
Experience	controller radar : 14
ASRS Report	399389
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 : 27000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Military KC10 was turned right to a heading of 270 degrees to avoid conflict. He read back heading, but then came back 40 seconds later and questioned the heading.

Original NASA ASRS Text

Title: ARTCC RADAR CTLR TURNED A KC10 TO A 270 DEG HDG TO AVOID AN ACR CL65 IN THE HOLDING PATTERN AT OTT. MIL PLT QUESTIONED THE TURN BEFORE EXECUTING IT AND LTSS OCCURRED.

Narrative: MIL KC10 WAS TURNED R TO A HDG OF 270 DEGS TO AVOID CONFLICT. HE READ BACK HDG, BUT THEN CAME BACK 40 SECONDS LATER AND QUESTIONED THE HDG.

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.