PA24 pilot reported the landing gear collapsed on landing at uao.

Attributes
ACN	581316
Time
Date	200305
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : uao.airport
State Reference	OR
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-24 Comanche
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot oversight : pic
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Experience	flight time total : 9200
ASRS Report	581316
Events
Anomaly	aircraft equipment problem : critical ground encounters other
Independent Detector	other flight crewa
Resolutory Action	aircraft : evacuated none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On may/tue/03, I was PIC of a piper comanche PA24-180, in an attempted landing at aurora state airport, or. The time was approximately XA30 pm local, VMC conditions prevailed. I selected gear down and observed a green light (for there is only a single gear status light for gear down) and proceeded to flare. I felt the gear collapse on touchdown, the propeller struck and the engine stopped. The aircraft came to a stop and I exited the aircraft. I had recently purchased the aircraft and received the aircraft logs and all required inspections had been accomplished. The only way I know to have prevented this occurrence would have been if the landing gear had not had an undisclosed defect.

Original NASA ASRS Text

Title: PA24 PLT RPTED THE LNDG GEAR COLLAPSED ON LNDG AT UAO.

Narrative: ON MAY/TUE/03, I WAS PIC OF A PIPER COMANCHE PA24-180, IN AN ATTEMPTED LNDG AT AURORA STATE ARPT, OR. THE TIME WAS APPROX XA30 PM LCL, VMC CONDITIONS PREVAILED. I SELECTED GEAR DOWN AND OBSERVED A GREEN LIGHT (FOR THERE IS ONLY A SINGLE GEAR STATUS LIGHT FOR GEAR DOWN) AND PROCEEDED TO FLARE. I FELT THE GEAR COLLAPSE ON TOUCHDOWN, THE PROP STRUCK AND THE ENG STOPPED. THE ACFT CAME TO A STOP AND I EXITED THE ACFT. I HAD RECENTLY PURCHASED THE ACFT AND RECEIVED THE ACFT LOGS AND ALL REQUIRED INSPECTIONS HAD BEEN ACCOMPLISHED. THE ONLY WAY I KNOW TO HAVE PREVENTED THIS OCCURRENCE WOULD HAVE BEEN IF THE LNDG GEAR HAD NOT HAD AN UNDISCLOSED DEFECT.

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.