Tower controller described a potential conflict event when traffic issued a go around failed to foll...

Narrative:

A C172 was on the runway doing a touch and go. On short final behind the C172 was a cherokee. There wasn't going to be enough spacing between the aircraft so I told the cherokee to go around south side of runway to avoid over flying the traffic on the runway. I then scanned the rest of the control environment and continued controlling my other aircraft. When I did my full scan I noticed that on the upwind of the runway the cherokee did not fully maneuver south of the runway and was right above the C172 on climb out. I immediately gave the C172 the traffic on the cherokee above and told him to make right downwind to avoid traffic. The cherokee was not answering all my transmissions and continued straight out then after a few seconds I reached him on frequency and gave him instructions back to the field. The cherokee needs to work on following instructions to avoid conflict with other aircraft.

Original NASA ASRS Text

Title: Tower Controller described a potential conflict event when traffic issued a go around failed to follow instructions to fly south of the runway; flying above traffic executing a touch and go.

Narrative: A C172 was on the runway doing a touch and go. On short final behind the C172 was a Cherokee. There wasn't going to be enough spacing between the aircraft so I told the Cherokee to go around south side of runway to avoid over flying the traffic on the runway. I then scanned the rest of the control environment and continued controlling my other aircraft. When I did my full scan I noticed that on the upwind of the runway the Cherokee did not fully maneuver south of the runway and was right above the C172 on climb out. I immediately gave the C172 the traffic on the Cherokee above and told him to make right downwind to avoid traffic. The Cherokee was not answering all my transmissions and continued straight out then after a few seconds I reached him on frequency and gave him instructions back to the field. The Cherokee needs to work on following instructions to avoid conflict with other aircraft.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	954286
Time
Date	201106
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Tower
State Reference	US
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Flight Phase	Climb
Route In Use	Visual Approach
Aircraft 2
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Phase	Landing
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Track / Heading All Types

Tower controller described a potential conflict event when traffic issued a go around failed to follow instructions to fly south of the runway; flying above traffic executing a touch and go.