While vectoring a departing commuter, the dca approach departure controller had a confliction with a...

Attributes
ACN	406003
Time
Date	199806
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : aml airport : dca
State Reference	VA
Altitude	msl bound lower : 9000 msl bound upper : 10000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	common carrier : air taxi
Make Model Name	Jetstream 31
Operating Under FAR Part	Part 135
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Experience	controller radar : 16
ASRS Report	406003
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

The jsta, handed off to dca and, on a vector toward the departure gate, came into conflict with an unidented target proceeding nwbound and climbing through 9000 ft. When I observed the conflict, I issued an immediate left turn to heading 020 degrees to the jsta until the conflict was resolved.

Original NASA ASRS Text

Title: WHILE VECTORING A DEPARTING COMMUTER, THE DCA APCH DEP CTLR HAD A CONFLICTION WITH AN ACR.

Narrative: THE JSTA, HANDED OFF TO DCA AND, ON A VECTOR TOWARD THE DEP GATE, CAME INTO CONFLICT WITH AN UNIDENTED TARGET PROCEEDING NWBOUND AND CLBING THROUGH 9000 FT. WHEN I OBSERVED THE CONFLICT, I ISSUED AN IMMEDIATE L TURN TO HDG 020 DEGS TO THE JSTA UNTIL THE CONFLICT WAS RESOLVED.

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.

While vectoring a departing commuter, the dca approach departure controller had a confliction with an air carrier.