Instructor with student pilot in tail wheel aircraft has ground loop, impacts VASI.

Attributes
ACN	180078
Time
Date	199106
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : asg
State Reference	AR
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 16000 flight time type : 100
ASRS Report	180078
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The incident occurred while giving tail wheel instruction to a member of the club. The ground loop occurred because of being unable to override the student's control of the aircraft, left the runway and impacted the VASI system. If the VASI system had not been at this location there would have been no incident. Human element: lack of cockpit coordination. Corrective action: need more time spent on the ground working on cockpit coordination.

Original NASA ASRS Text

Title: INSTRUCTOR WITH STUDENT PLT IN TAIL WHEEL ACFT HAS GND LOOP, IMPACTS VASI.

Narrative: THE INCIDENT OCCURRED WHILE GIVING TAIL WHEEL INSTRUCTION TO A MEMBER OF THE CLUB. THE GND LOOP OCCURRED BECAUSE OF BEING UNABLE TO OVERRIDE THE STUDENT'S CTL OF THE ACFT, LEFT THE RWY AND IMPACTED THE VASI SYS. IF THE VASI SYS HAD NOT BEEN AT THIS LOCATION THERE WOULD HAVE BEEN NO INCIDENT. HUMAN ELEMENT: LACK OF COCKPIT COORD. CORRECTIVE ACTION: NEED MORE TIME SPENT ON THE GND WORKING ON COCKPIT COORD.

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.