Landing gear collapsed on landing.

Attributes
ACN	185009
Time
Date	199107
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : osh
State Reference	WI
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 Transport
Flight Phase	descent : approach landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 50 flight time total : 12000 flight time type : 400
ASRS Report	185009
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Non electric gear crank would not turn any further and I assumed the gear was down and locked. Corrective action: make a visual inspection of knee action of landing gear and not depend on the feel of gear crank.

Original NASA ASRS Text

Title: LNDG GEAR COLLAPSED ON LNDG.

Narrative: NON ELECTRIC GEAR CRANK WOULD NOT TURN ANY FURTHER AND I ASSUMED THE GEAR WAS DOWN AND LOCKED. CORRECTIVE ACTION: MAKE A VISUAL INSPECTION OF KNEE ACTION OF LNDG GEAR AND NOT DEPEND ON THE FEEL OF GEAR CRANK.

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.