The landing gear folded on a taxi test.

Attributes
ACN	281539
Time
Date	199408
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dto
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Experimental
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 33 flight time total : 260 flight time type : 26
ASRS Report	281539
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I was taxiing on runway 17 testing my landing gear and locking system. System failed at about 35 mph. Landing gear was built per plans. I have changed gear locking system. To incorporate steel gear locks and blocks. I had been working on my landing gear for my KR2. I was doing high speed taxi at about 35 mph. I pulled back on the power and applied the brakes. The gear rolled up and I broke 1 blade off a 2 bladed composite propeller. We lifted the plane up rolled the gear back and returned to the hangar.

Original NASA ASRS Text

Title: THE LNDG GEAR FOLDED ON A TAXI TEST.

Narrative: I WAS TAXIING ON RWY 17 TESTING MY LNDG GEAR AND LOCKING SYS. SYS FAILED AT ABOUT 35 MPH. LNDG GEAR WAS BUILT PER PLANS. I HAVE CHANGED GEAR LOCKING SYS. TO INCORPORATE STEEL GEAR LOCKS AND BLOCKS. I HAD BEEN WORKING ON MY LNDG GEAR FOR MY KR2. I WAS DOING HIGH SPD TAXI AT ABOUT 35 MPH. I PULLED BACK ON THE PWR AND APPLIED THE BRAKES. THE GEAR ROLLED UP AND I BROKE 1 BLADE OFF A 2 BLADED COMPOSITE PROP. WE LIFTED THE PLANE UP ROLLED THE GEAR BACK AND RETURNED TO THE HANGAR.

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.