Atx X had less than standard non radar separation from atx Y. System error.

Attributes
ACN	172003
Time
Date	199103
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : jhw
State Reference	PA
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : eri
Operator	common carrier : air taxi
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air taxi
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : non radar
ASRS Report	172003
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	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 30000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Atx X was released for departure of jhw. I missed part of his readback and he stated runway 25. I thought the pilot was departing of runway 7. Atx Y was inbound to jhw for runway 7. Atx X ended up 500' and 5 mi from atx Y for a non-radar departure I needed to ensure sep by placing atx X on a departure heading and did not do so. From now on I will listen to the readbacks more closely.

Original NASA ASRS Text

Title: ATX X HAD LESS THAN STANDARD NON RADAR SEPARATION FROM ATX Y. SYSTEM ERROR.

Narrative: ATX X WAS RELEASED FOR DEP OF JHW. I MISSED PART OF HIS READBACK AND HE STATED RWY 25. I THOUGHT THE PLT WAS DEPARTING OF RWY 7. ATX Y WAS INBND TO JHW FOR RWY 7. ATX X ENDED UP 500' AND 5 MI FROM ATX Y FOR A NON-RADAR DEP I NEEDED TO ENSURE SEP BY PLACING ATX X ON A DEP HDG AND DID NOT DO SO. FROM NOW ON I WILL LISTEN TO THE READBACKS MORE CLOSELY.

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.