T-6 pilot reported landing gear failed on landing.

Attributes
ACN	1700561
Time
Date	201911
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Texan T6/Harvard (Antique)
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	None
Flight Plan	None
Component
Aircraft Component	Landing Gear
Person 1
Function	Single Pilot
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 14000 Flight Crew Type 160
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Ground Event / Encounter Gear Up Landing Ground Event / Encounter Ground Strike - Aircraft

Narrative:

Landing runway 21 at ZZZ; placed gear down on downwind and all gear indications for down and locked were checked per checklist. Turning base; again gear down and locked were checked per checklist/gumps. Flared and settled easily onto runway gear up. Touched down on centerline; and only as it slowed (not enough air over rudder at that point) was I unable to keep it from drifting a few feet off centerline. Lifting plane to get plane back on gear; as soon as weight was removed (plane lifted the slightest amount) the gear handle popped down and gear fell out (were not in up-locked position). No injuries. Limited damage.

Original NASA ASRS Text

Title: T-6 Pilot reported landing gear failed on landing.

Narrative: Landing Runway 21 at ZZZ; placed gear down on downwind and all gear indications for down and locked were checked per checklist. Turning base; again gear down and locked were checked per checklist/GUMPS. Flared and settled easily onto runway gear up. Touched down on centerline; and only as it slowed (not enough air over rudder at that point) was I unable to keep it from drifting a few feet off centerline. Lifting plane to get plane back on gear; as soon as weight was removed (plane lifted the slightest amount) the gear handle popped down and gear fell out (were not in up-locked position). No injuries. Limited damage.

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.