2 IFR aircraft came in close proximity to each other.

Attributes
ACN	107159
Time
Date	198903
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : stx
State Reference	PR
Altitude	msl bound lower : 16000 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : tjzs
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	107159
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

There was an outbnd push from sju where there were approximately 15 departures. I had air carrier X climbing to FL290 and air carrier Y climbing to 17000'. The air carrier Y took off about 4 or 5 mins in front of the air carrier X. The 2 aircraft were both heading approximately the same direction which was southeast. Air carrier Y called and asked what altitude the aircraft that came in close proximity to him was and I reported 17000'. At this point I discussed the matter with the supervisor in charge because I realized the 2 aircraft were close. I never realized the possible confliction until air carrier Y asked about his traffic. This problem could have been avoided with more attentive scanning.

Original NASA ASRS Text

Title: 2 IFR ACFT CAME IN CLOSE PROX TO EACH OTHER.

Narrative: THERE WAS AN OUTBND PUSH FROM SJU WHERE THERE WERE APPROX 15 DEPS. I HAD ACR X CLBING TO FL290 AND ACR Y CLBING TO 17000'. THE ACR Y TOOK OFF ABOUT 4 OR 5 MINS IN FRONT OF THE ACR X. THE 2 ACFT WERE BOTH HDG APPROX THE SAME DIRECTION WHICH WAS SE. ACR Y CALLED AND ASKED WHAT ALT THE ACFT THAT CAME IN CLOSE PROX TO HIM WAS AND I RPTED 17000'. AT THIS POINT I DISCUSSED THE MATTER WITH THE SUPVR IN CHARGE BECAUSE I REALIZED THE 2 ACFT WERE CLOSE. I NEVER REALIZED THE POSSIBLE CONFLICTION UNTIL ACR Y ASKED ABOUT HIS TFC. THIS PROB COULD HAVE BEEN AVOIDED WITH MORE ATTENTIVE SCANNING.

Data retrieved from NASA's ASRS site as of August 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.