Air carrier Z flight crew perception less than standard separation from air carrier X.

Attributes
ACN	154494
Time
Date	199008
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ind
State Reference	IN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : takeoff ground : holding
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Navigation In Use	Other
Flight Phase	landing other
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	154494
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe conflict : airborne less severe
Independent Detector	other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

I instructed air carrier X to taxi into position and hold on runway 32 behind air carrier Y (who was landing). Air carrier Z was cleared to land on the same runway. From that time on I draw a blank as to what was happening. I remember looking at air carrier X on the runway and wondering to myself why the aircraft was not rolling. When I asked the pilot, he stated that I had not cleared him for takeoff. Using a wrong call sign (air carrier Y). I told air carrier Z to stand by for a go around after I had cleared air carrier X for takeoff. Air carrier X departed and was airborne and air carrier Z elected to go around. It turned out that there was a minimum 6000' sep situation but it was an accident (not planned). I was not distracted at the time because I was looking at the air carrier X wondering why he was so slow. I cannot remember air carrier Y landing or turning off the runway. I remember air carrier Y crossing the runway threshold. Overall, I don't think this was a good operation, nor did it look good out the window. I have no suggestions for preventing this in the future other than trying to be more alert. In my mind, I felt I had cleared air carrier X for takeoff. I have not listened to the tape and at this point am unclear as to whether I did or did not.

Original NASA ASRS Text

Title: ACR Z FLT CREW PERCEPTION LESS THAN STANDARD SEPARATION FROM ACR X.

Narrative: I INSTRUCTED ACR X TO TAXI INTO POS AND HOLD ON RWY 32 BEHIND ACR Y (WHO WAS LNDG). ACR Z WAS CLRED TO LAND ON THE SAME RWY. FROM THAT TIME ON I DRAW A BLANK AS TO WHAT WAS HAPPENING. I REMEMBER LOOKING AT ACR X ON THE RWY AND WONDERING TO MYSELF WHY THE ACFT WAS NOT ROLLING. WHEN I ASKED THE PLT, HE STATED THAT I HAD NOT CLRED HIM FOR TKOF. USING A WRONG CALL SIGN (ACR Y). I TOLD ACR Z TO STAND BY FOR A GAR AFTER I HAD CLRED ACR X FOR TKOF. ACR X DEPARTED AND WAS AIRBORNE AND ACR Z ELECTED TO GO AROUND. IT TURNED OUT THAT THERE WAS A MINIMUM 6000' SEP SITUATION BUT IT WAS AN ACCIDENT (NOT PLANNED). I WAS NOT DISTRACTED AT THE TIME BECAUSE I WAS LOOKING AT THE ACR X WONDERING WHY HE WAS SO SLOW. I CANNOT REMEMBER ACR Y LNDG OR TURNING OFF THE RWY. I REMEMBER ACR Y XING THE RWY THRESHOLD. OVERALL, I DON'T THINK THIS WAS A GOOD OPERATION, NOR DID IT LOOK GOOD OUT THE WINDOW. I HAVE NO SUGGESTIONS FOR PREVENTING THIS IN THE FUTURE OTHER THAN TRYING TO BE MORE ALERT. IN MY MIND, I FELT I HAD CLRED ACR X FOR TKOF. I HAVE NOT LISTENED TO THE TAPE AND AT THIS POINT AM UNCLEAR AS TO WHETHER I DID OR DID NOT.

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.