PA-28R pilot reported gear collapse on landing after experiencing a partial electrical failure.

Attributes
ACN	1749682
Time
Date	202007
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	PA-28R Cherokee Arrow All Series
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Vectors
Flight Plan	None
Component
Aircraft Component	Landing Gear
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 776 Flight Crew Type 36
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Ground Event / Encounter Gear Up Landing Ground Event / Encounter Loss Of Aircraft Control

Narrative:

Approx. 10 nm from destination ZZZ; aircraft suffered partial electrical failure.lost electrical equipment in the following order: garmin 530; nav-com #2; transponder. Intercom volume faded but was operational until end of flight. Located ZZZ visually and set up for left downwind runway 09. Performed gumps check on downwind. Was able to feel gear movement when gear handle lowered. Confirmed gumps on final. Aircraft touched down on bottom of fuselage; prop blades bent and stopped; aircraft veered to the right and yawed 160 degrees to the left. Stopped on approx. Heading of 290 degrees. Remained on runway throughout incident. Master and mags shut off before plane stopped moving. No fire. Pilot and passenger exited uninjured within 5 seconds. When plane was lifted with sling for removal from runway; all three landing gears were hanging from their respective positions but not locked in place. Nose gear doors open and damaged. Cause of incident unknown.

Original NASA ASRS Text

Title: PA-28R pilot reported gear collapse on landing after experiencing a partial electrical failure.

Narrative: Approx. 10 nm from destination ZZZ; aircraft suffered partial electrical failure.Lost electrical equipment in the following order: Garmin 530; nav-com #2; transponder. Intercom volume faded but was operational until end of flight. Located ZZZ visually and set up for left downwind runway 09. Performed GUMPS check on downwind. Was able to feel gear movement when gear handle lowered. Confirmed GUMPS on final. Aircraft touched down on bottom of fuselage; prop blades bent and stopped; aircraft veered to the right and yawed 160 degrees to the left. Stopped on approx. heading of 290 degrees. Remained on runway throughout incident. Master and mags shut off before plane stopped moving. No fire. Pilot and passenger exited uninjured within 5 seconds. When plane was lifted with sling for removal from runway; all three landing gears were hanging from their respective positions but not locked in place. Nose gear doors open and damaged. Cause of incident unknown.

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.