Small transport Y climb through occupied altitude had less than standard separation from small trans...

Attributes
ACN	269645
Time
Date	199404
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : emg
State Reference	LA
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : shv
Operator	general aviation : personal
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Baron 55/Cochise
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 8
ASRS Report	269645
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 300
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Twin cessna X 15 mi vectors to downwind. Level 3000 ft. Baron Y departs active runway to cross ahead of the twin cessna's course. Baron is assigned 5000 and turned in front of the twin cessna. This was discovered by the conflict alert system. Corrective action: traffic call and new heading assigned contributing factor. Runway change, landline coordination not bad judgment of aircraft performance, not monitoring modec altitude.

Original NASA ASRS Text

Title: SMT Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM SMT X. SYS ERROR.

Narrative: TWIN CESSNA X 15 MI VECTORS TO DOWNWIND. LEVEL 3000 FT. BARON Y DEPARTS ACTIVE RWY TO CROSS AHEAD OF THE TWIN CESSNA'S COURSE. BARON IS ASSIGNED 5000 AND TURNED IN FRONT OF THE TWIN CESSNA. THIS WAS DISCOVERED BY THE CONFLICT ALERT SYS. CORRECTIVE ACTION: TFC CALL AND NEW HDG ASSIGNED CONTRIBUTING FACTOR. RWY CHANGE, LANDLINE COORD NOT BAD JUDGMENT OF ACFT PERFORMANCE, NOT MONITORING MODEC ALT.

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.

Small transport Y climb through occupied altitude had less than standard separation from small transport X. System error.