Air carrier X had less than standard separation from cpr Y. System error.

Attributes
ACN	142221
Time
Date	199004
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ape
State Reference	OH
Altitude	msl bound lower : 39500 msl bound upper : 41000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : on vectors enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	enroute : direct enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 2
ASRS Report	142221
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 21000 vertical : 1500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Loss of standard sep occurred between air carrier X and cpr Y at FL410. Callback conversation with reporter revealed the following information. Reporter stated types of aircraft were: air carrier, widebody transport, and cpr, light transport. Air carrier had made a turn to join an arwy which put him in conflict with the light transport. Conflict alert activated with 17 mi horizontal sep. She turned both aircraft and descended the light transport. Operational error was filed. Reporter was retrained.

Original NASA ASRS Text

Title: ACR X HAD LESS THAN STANDARD SEPARATION FROM CPR Y. SYSTEM ERROR.

Narrative: LOSS OF STANDARD SEP OCCURRED BTWN ACR X AND CPR Y AT FL410. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. RPTR STATED TYPES OF ACFT WERE: ACR, WDB, AND CPR, LTT. ACR HAD MADE A TURN TO JOIN AN ARWY WHICH PUT HIM IN CONFLICT WITH THE LTT. CONFLICT ALERT ACTIVATED WITH 17 MI HORIZ SEP. SHE TURNED BOTH ACFT AND DSNDED THE LTT. OPERROR WAS FILED. RPTR WAS RETRAINED.

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.