The landing gear collapsed after landing following an electrical failure.

Attributes
ACN	1277976
Time
Date	201506
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-24 Comanche
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Direct Visual Approach
Flight Plan	None
Component
Aircraft Component	Landing Gear
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Private Flight Crew Instrument
Experience	Flight Crew Last 90 Days 8.5 Flight Crew Total 703 Flight Crew Type 102
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

I flew back to ZZZ after dropping my son off in ZZZ1. On the return trip I lost my GPS and HSI. When descending for landing the radio was noted to be weak---diagnosed electrical/alternator problem. The landing gear was quickly put down at which time all remaining electrical power was lost. Emergency manual extension reviewed and followed. Gear was thought to be down and locked--confirmed by looking in left wing mirror and by feeling extension lever. Attempted to land--gear buckled--repowered aircraft and circled to give time to think. Again tried both electrical and manual extension--felt gear locked. Attempted to land again. This time main gear held for about 2-5 seconds at which point the left gear failed and then the nose gear causing propeller strike. The aircraft stopped safely on the runway. No injury to myself (sole passenger) nor was there any property damage.

Original NASA ASRS Text

Title: The landing gear collapsed after landing following an electrical failure.

Narrative: I flew back to ZZZ after dropping my son off in ZZZ1. On the return trip I lost my GPS and HSI. When descending for landing the radio was noted to be weak---diagnosed electrical/alternator problem. The landing gear was quickly put down at which time all remaining electrical power was lost. Emergency manual extension reviewed and followed. Gear was thought to be down and locked--confirmed by looking in left wing mirror and by feeling extension lever. Attempted to land--gear buckled--repowered aircraft and circled to give time to think. Again tried both electrical and manual extension--felt gear locked. Attempted to land again. This time main gear held for about 2-5 seconds at which point the left gear failed and then the nose gear causing propeller strike. The aircraft stopped safely on the runway. No injury to myself (sole passenger) nor was there any property 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.