Right seat pilot in tail dragger aircraft ground loops on takeoff.

Attributes
ACN	181706
Time
Date	199106
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : 2d8
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff
Flight Plan	VFR
Person 1
Affiliation	Other
Function	observation : observer
Qualification	pilot : private
Experience	flight time last 90 days : 10 flight time total : 2000 flight time type : 500
ASRS Report	181706
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Another pilot, a CFI, was in right seat. I taxied out to runway, got lined up for takeoff and told him to go ahead and takeoff. He pushed the throttle in and we reached approximately 20 mph. He started to raise the tail and just as he did he pushed full right rudder and then froze with his right leg stiff on the right rudder pedal and his hand on the throttle. By the time I could do anything we had ground looped to the right! The left main gear and the left wing tip were damaged. There was one passenger, also a pilot, in the rear seat. There were no other aircraft involved and there were no personal physical injuries.

Original NASA ASRS Text

Title: RIGHT SEAT PLT IN TAIL DRAGGER ACFT GND LOOPS ON TKOF.

Narrative: ANOTHER PLT, A CFI, WAS IN R SEAT. I TAXIED OUT TO RWY, GOT LINED UP FOR TKOF AND TOLD HIM TO GO AHEAD AND TKOF. HE PUSHED THE THROTTLE IN AND WE REACHED APPROX 20 MPH. HE STARTED TO RAISE THE TAIL AND JUST AS HE DID HE PUSHED FULL R RUDDER AND THEN FROZE WITH HIS R LEG STIFF ON THE R RUDDER PEDAL AND HIS HAND ON THE THROTTLE. BY THE TIME I COULD DO ANYTHING WE HAD GND LOOPED TO THE R! THE L MAIN GEAR AND THE L WING TIP WERE DAMAGED. THERE WAS ONE PAX, ALSO A PLT, IN THE REAR SEAT. THERE WERE NO OTHER ACFT INVOLVED AND THERE WERE NO PERSONAL PHYSICAL INJURIES.

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.