<< >> NASA ASRS Report 333340, April 1996

Tower controller claims that 2 commuter aircraft were released by ARTCC without ensuring that separation could be maintained.

Attributes
ACN	333340
Time
Date	199604
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : gju airport : gjt
State Reference	CO
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv tower : gjt
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 135
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 135
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Experience	controller military : 4 controller non radar : 8 flight time total : 200
ASRS Report	333340
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Air carrier X, an E120 departed runway 22 at XA46Z to den with a VFR climb through 12000 ft to maintain FL250. Air carrier Y, an E120 departed runway 22 at XA46Z with an IFR clearance to 12000 ft en route to phx. Separation between these 2 aircraft was not insured, by ZDV.

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Original NASA ASRS Text

Title: TWR CTLR CLAIMS THAT 2 COMMUTER ACFT WERE RELEASED BY ARTCC WITHOUT ENSURING THAT SEPARATION COULD BE MAINTAINED.

Narrative: ACR X, AN E120 DEPARTED RWY 22 AT XA46Z TO DEN WITH A VFR CLB THROUGH 12000 FT TO MAINTAIN FL250. ACR Y, AN E120 DEPARTED RWY 22 AT XA46Z WITH AN IFR CLRNC TO 12000 FT ENRTE TO PHX. SEPARATION BTWN THESE 2 ACFT WAS NOT INSURED, BY ZDV.

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.