PA-24 Comanche
Flight Crew Private; Flight Crew Instrument
Flight Crew Last 90 Days 8.5; Flight Crew Total 703; Flight Crew Type 102
Training / Qualification; Troubleshooting; Confusion; Time Pressure
Aircraft Equipment Problem Critical
Aircraft Aircraft Damaged; General Maintenance Action
Aircraft; Human Factors
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.
The landing gear collapsed after landing following an electrical failure.