Air carrier X had less than standard separartion from air carrier Y. System error.

Attributes
ACN	150786
Time
Date	199007
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : bal
State Reference	MD
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Experience	controller radar : 2
ASRS Report	150786
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation non adherence : clearance
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	none taken : unable
Consequence	faa : investigated
Miss Distance	horizontal : 9000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Departure air carrier X climbing to 170 westbound remaining south of thunderstorm activity. Arrival air carrier Y descending west of field to remain west of thunderstorm activity. Departure air carrier X climbing poorly was out of 3500', 8 mi west. Arrival air carrier Y descended to 4000' 12 mi west. Arrival air carrier Y was turned southeast bound and descended to 3000'. Departure air carrier X was turned northwest bound and told to expedite climb through 5000'. Traffic was called at 11 O'clock and 3 mi for wake turbulence. Departure air carrier X stated it looked like a conflict to him. Human performance considerations, WX in area with deviation, now procedures, coasting in ARTS. Callback conversation with reporter revealed the following information. Reporter stated departure aircraft was medium large transport, arrival aircraft was widebody transport. Both were acrs. Reporter stated the departure aircraft was slow turning because of WX. Conflict alert activated after the radar vector heading had been issued to the departure aircraft. A system error was filed by the facility management. Reporter was decertified recieved remedial training and recertified.

Original NASA ASRS Text

Title: ACR X HAD LESS THAN STANDARD SEPARARTION FROM ACR Y. SYSTEM ERROR.

Narrative: DEP ACR X CLBING TO 170 WBND REMAINING S OF TSTM ACTIVITY. ARR ACR Y DSNDING W OF FIELD TO REMAIN W OF TSTM ACTIVITY. DEP ACR X CLBING POORLY WAS OUT OF 3500', 8 MI W. ARR ACR Y DSNDED TO 4000' 12 MI W. ARR ACR Y WAS TURNED SE BOUND AND DSNDED TO 3000'. DEP ACR X WAS TURNED NW BOUND AND TOLD TO EXPEDITE CLB THROUGH 5000'. TFC WAS CALLED AT 11 O'CLOCK AND 3 MI FOR WAKE TURB. DEP ACR X STATED IT LOOKED LIKE A CONFLICT TO HIM. HUMAN PERFORMANCE CONSIDERATIONS, WX IN AREA WITH DEV, NOW PROCS, COASTING IN ARTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. RPTR STATED DEP ACFT WAS MLG, ARR ACFT WAS WDB. BOTH WERE ACRS. RPTR STATED THE DEP ACFT WAS SLOW TURNING BECAUSE OF WX. CONFLICT ALERT ACTIVATED AFTER THE RADAR VECTOR HDG HAD BEEN ISSUED TO THE DEP ACFT. A SYS ERROR WAS FILED BY THE FAC MGMNT. RPTR WAS DECERTIFIED RECIEVED REMEDIAL TRNING AND RECERTIFIED.

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.