<< >> NASA ASRS Report 676422, October 2005

A kitfox iv incurred damage when on approach to a short field; pilot lost throttle control and made a hard landing with a ground loop.

Attributes
ACN	676422
Time
Date	200510
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Amateur (Home) Built
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 14.5 flight time total : 214 flight time type : 67.2
ASRS Report	676422
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition
Consequence	other Other
Factors
Maintenance	performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : inspection
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Throttle connection on home built was not satisfactory to ensure safety and aircraft received damage; but no injuries occurred. It appears that the lock nut on the turnbuckle was not satisfactory and additional safety wire should have been used. The throttle became disconnected on final approach to landing; resulting in a hard landing and some damage to the aircraft. Callback conversation with reporter revealed the following information: the reporter stated with the loss of the throttle connection; the airplane had too much power for landing but not enough power to go around. The cause was the lock nut on the throttle linkage backed off and throttle control was lost. The airplane was hard landed and then ground looped; incurring damage to the wing spars. The incident occurred at a private field. The airplane is a home built kit airplane but was not built by the reporter.

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Original NASA ASRS Text

Title: A KITFOX IV INCURRED DAMAGE WHEN ON APCH TO A SHORT FIELD; PLT LOST THROTTLE CTL AND MADE A HARD LNDG WITH A GND LOOP.

Narrative: THROTTLE CONNECTION ON HOME BUILT WAS NOT SATISFACTORY TO ENSURE SAFETY AND ACFT RECEIVED DAMAGE; BUT NO INJURIES OCCURRED. IT APPEARS THAT THE LOCK NUT ON THE TURNBUCKLE WAS NOT SATISFACTORY AND ADDITIONAL SAFETY WIRE SHOULD HAVE BEEN USED. THE THROTTLE BECAME DISCONNECTED ON FINAL APCH TO LNDG; RESULTING IN A HARD LNDG AND SOME DAMAGE TO THE ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED WITH THE LOSS OF THE THROTTLE CONNECTION; THE AIRPLANE HAD TOO MUCH PWR FOR LNDG BUT NOT ENOUGH PWR TO GO AROUND. THE CAUSE WAS THE LOCK NUT ON THE THROTTLE LINKAGE BACKED OFF AND THROTTLE CTL WAS LOST. THE AIRPLANE WAS HARD LANDED AND THEN GND LOOPED; INCURRING DAMAGE TO THE WING SPARS. THE INCIDENT OCCURRED AT A PVT FIELD. THE AIRPLANE IS A HOME BUILT KIT AIRPLANE BUT WAS NOT BUILT BY THE RPTR.

Data retrieved from NASA's ASRS site as of January 2009 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.