Experimental 'homebuilt' amphibian landing gear collapses upon landing.

Attributes
ACN	179704
Time
Date	199105
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : irs
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
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 21 flight time total : 466 flight time type : 28
ASRS Report	179704
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Experimental homebuilt tail wheel hull amphibian, retractable main gear and tail wheel. Pilot made normal approach to landing on runway 24 at IRS. When touching down, main landing gear folded forward (its normal path of retraction). Aircraft settled on keel and stopped. Minor scrape on keep 2' X 48'. Jacked aircraft up, allowing gear to switch down again and lock. Taxied aircraft to hangar.

Original NASA ASRS Text

Title: EXPERIMENTAL 'HOMEBUILT' AMPHIBIAN LNDG GEAR COLLAPSES UPON LNDG.

Narrative: EXPERIMENTAL HOMEBUILT TAIL WHEEL HULL AMPHIBIAN, RETRACTABLE MAIN GEAR AND TAIL WHEEL. PLT MADE NORMAL APCH TO LNDG ON RWY 24 AT IRS. WHEN TOUCHING DOWN, MAIN LNDG GEAR FOLDED FORWARD (ITS NORMAL PATH OF RETRACTION). ACFT SETTLED ON KEEL AND STOPPED. MINOR SCRAPE ON KEEP 2' X 48'. JACKED ACFT UP, ALLOWING GEAR TO SWITCH DOWN AGAIN AND LOCK. TAXIED ACFT TO 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.