Developmental mem departure controller has a memory error when climbing an SF34, which conflicts wit...

Attributes
ACN	568006
Time
Date	200212
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : mem.vortac
State Reference	TN
Altitude	msl single value : 9000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : mem.tracon
Operator	common carrier : air carrier
Make Model Name	Saab-Scania Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : mem.tracon
Make Model Name	DC-3/Dakota/Skytrain
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : developmental
Experience	controller radar : 12 controller time certified in position2 : 1
ASRS Report	568006
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne critical non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb
Resolutory Action	none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Problem Areas	Aircraft ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

While working departure radar east, I instructed aircraft X to climb and maintain 11000 ft. Aircraft Y was southeast of mes level at 9000 ft nebound with no mode C (transponder signal was not being received by the radar, it was working normally prior to this incident). I mistakenly was thinking that aircraft Y was at 8000 ft and that I only needed aircraft X to be out of 9000 ft to avoid conflict. When I looked back at the position and altitude of the 2 aircraft, and aircraft X was out of 9000 ft, I then remembered that aircraft Y was at 9000 ft not 8000 ft. I then issued turns to get the aircraft on diverging courses, then instructed aircraft X to expedite the climb.

Original NASA ASRS Text

Title: DEVELOPMENTAL MEM DEP CTLR HAS A MEMORY ERROR WHEN CLBING AN SF34, WHICH CONFLICTS WITH AN ENRTE DC3.

Narrative: WHILE WORKING DEP RADAR E, I INSTRUCTED ACFT X TO CLB AND MAINTAIN 11000 FT. ACFT Y WAS SE OF MES LEVEL AT 9000 FT NEBOUND WITH NO MODE C (XPONDER SIGNAL WAS NOT BEING RECEIVED BY THE RADAR, IT WAS WORKING NORMALLY PRIOR TO THIS INCIDENT). I MISTAKENLY WAS THINKING THAT ACFT Y WAS AT 8000 FT AND THAT I ONLY NEEDED ACFT X TO BE OUT OF 9000 FT TO AVOID CONFLICT. WHEN I LOOKED BACK AT THE POS AND ALT OF THE 2 ACFT, AND ACFT X WAS OUT OF 9000 FT, I THEN REMEMBERED THAT ACFT Y WAS AT 9000 FT NOT 8000 FT. I THEN ISSUED TURNS TO GET THE ACFT ON DIVERGING COURSES, THEN INSTRUCTED ACFT X TO EXPEDITE THE CLB.

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.

Developmental mem departure controller has a memory error when climbing an SF34, which conflicts with an en route DC3.