Small aircraft instructor lost control on landing and had landing gear collapse when a gndloop occur...

Attributes
ACN	468805
Time
Date	200004
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : whp.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : atp pilot : multi engine pilot : flight engineer
Experience	flight time last 90 days : 30 flight time total : 20000 flight time type : 3
ASRS Report	468805
Person 2
Affiliation	other
Function	observation : observer other personnel other
Qualification	other other : plt- pax pilot : private
Events
Anomaly	ground encounters other other anomaly
Independent Detector	other flight crewa other other : pax 2
Resolutory Action	none taken : unable
Consequence	other other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I allowed the passenger (a rated, experienced pilot) to make the approach and landing. At touchdown, the aircraft swerved to the right, then left. I announced 'I have the aircraft' and applied right rudder and brake. The other pilot responded 'you've got it,' and got clear of the controls. My rapid application of right rudder and brake overcorrected, and I tried to follow up with left rudder and brake. My foot caught momentarily on the stirrup which surrounds the rudder pedal, and by the time I got my foot on the brake, the aircraft had rotated too far to the right to prevent the gndloop. The left main gear folded inboard, and shortly thereafter the right main folded outboard. The aircraft came to rest 120 degrees to the landing direction on its belly.

Original NASA ASRS Text

Title: SMA INSTRUCTOR LOST CTL ON LNDG AND HAD LNDG GEAR COLLAPSE WHEN A GNDLOOP OCCURRED.

Narrative: I ALLOWED THE PAX (A RATED, EXPERIENCED PLT) TO MAKE THE APCH AND LNDG. AT TOUCHDOWN, THE ACFT SWERVED TO THE R, THEN L. I ANNOUNCED 'I HAVE THE ACFT' AND APPLIED R RUDDER AND BRAKE. THE OTHER PLT RESPONDED 'YOU'VE GOT IT,' AND GOT CLR OF THE CTLS. MY RAPID APPLICATION OF R RUDDER AND BRAKE OVERCORRECTED, AND I TRIED TO FOLLOW UP WITH L RUDDER AND BRAKE. MY FOOT CAUGHT MOMENTARILY ON THE STIRRUP WHICH SURROUNDS THE RUDDER PEDAL, AND BY THE TIME I GOT MY FOOT ON THE BRAKE, THE ACFT HAD ROTATED TOO FAR TO THE R TO PREVENT THE GNDLOOP. THE L MAIN GEAR FOLDED INBOARD, AND SHORTLY THEREAFTER THE R MAIN FOLDED OUTBOARD. THE ACFT CAME TO REST 120 DEGS TO THE LNDG DIRECTION ON ITS BELLY.

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.

Small aircraft instructor lost control on landing and had landing gear collapse when a gndloop occurred.