Narrative:

Taking my airplane up to test the new avionics installed. Upon completion; made a VFR approach to [the] runway. Selected gear down abeam the runway markings; observe a green indicator; added flaps and configured the plane for landing. Upon touchdown the gear collapsed and the plane came to a rest shortly there after.

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Original NASA ASRS Text

Title: Private Pilot reported difficulties with landing gear extension. Pilot landed and gear collapsed bringing aircraft to a stop.

Narrative: Taking my airplane up to test the new avionics installed. Upon completion; made a VFR approach to [the] Runway. Selected gear down abeam the runway markings; observe a green indicator; added flaps and configured the plane for landing. Upon touchdown the gear collapsed and the plane came to a rest shortly there after.

Data retrieved from NASA's ASRS site 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.