Small transport X had less than standard separation from air carrier Y. System error.

Attributes
ACN	162761
Time
Date	199011
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bdr
State Reference	CT
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 17 controller radar : 10
ASRS Report	162761
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument
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	none taken : anomaly accepted
Consequence	faa : investigated
Miss Distance	horizontal : 10800 vertical : 700
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was thinking of utilizing the opp direction rule in non radar where 2 aircraft report passing the same NAVAID at which point you may climb the aircraft. I failed to get the reports, but still climbed air carrier Y through small transport X. Callback conversation with reporter revealed the following information. Reporter stated; experience 10 yrs radar, 17 yrs non-radar, aircraft types air carrier mog, private small transport. System error was filed. Conflict alert activated. Sep: 1.8 horizontal, 700 vertical. Air carrier Y was climbed through small transport X altitude. Radar sep was being used. Reporter admitted traffic was light and complacency was a factor.

Original NASA ASRS Text

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

Narrative: I WAS THINKING OF UTILIZING THE OPP DIRECTION RULE IN NON RADAR WHERE 2 ACFT RPT PASSING THE SAME NAVAID AT WHICH POINT YOU MAY CLB THE ACFT. I FAILED TO GET THE RPTS, BUT STILL CLBED ACR Y THROUGH SMT X. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. RPTR STATED; EXPERIENCE 10 YRS RADAR, 17 YRS NON-RADAR, ACFT TYPES ACR MOG, PVT SMT. SYS ERROR WAS FILED. CONFLICT ALERT ACTIVATED. SEP: 1.8 HORIZ, 700 VERT. ACR Y WAS CLBED THROUGH SMT X ALT. RADAR SEP WAS BEING USED. RPTR ADMITTED TFC WAS LIGHT AND COMPLACENCY WAS A FACTOR.

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.