Date: 201707
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Flight conditions: VMC
Weather elements / visibility: 10
Light: Daylight
Aircraft: Bonanza 36
Operator: Personal
Operating under: Part 91
Flight plan: None
Mission: Personal
Flight phase: Landing
ATC / advisory: Tower ZZZ
Aircraft component: AC Generator/Alternator
Component problem: Failed
Reporter organization: Personal
Reporter function: Pilot Flying; Single Pilot
Reporter qualification: Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural FAR; Ground Event / Encounter Ground Strike - Aircraft
Detector: Person Flight Crew
When detected: In-flight
Result: Aircraft Aircraft Damaged; Flight Crew Diverted; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification; General Maintenance Action
Contributing factors: Aircraft; Human Factors
Primary problem: Aircraft

Narrative: I departed on an IFR Flight Plan in a Bonanza A36. During the flight the 'Standby Alternator' light illuminated. I reduced nonessential electrical equipment and cycled the alternator and battery switches. Then the Primary 'Alternator Out' light illuminated. I alerted ATC I wanted to divert my flight for evaluation. Prior to descent I lowered the landing Gear. I heard and felt the landing gear fully cycle into the down position. The plane did not illuminate 3 green landing gear lights used to confirm the gear is fully extended. Instead; only the red landing gear light illuminated indicating a problem existed with the landing gear. I cranked the emergency landing gear handle all the way out and still did not get 3 green landing gear lights to illuminate. The gear warning audible alert began to sound as I pulled the power below 15 inches of manifold pressure. I asked the tower to look for extended gear. They confirmed gear was down with the aid of binoculars. I Landed safely and parked. I stayed overnight in a hotel. The next Morning; a mechanic determined the alternator was out of service but determined the battery was fully functional. He verified the 3 green landing gear lights were not illuminated despite the plane being on the ground with the gear extended normally. The owner of the aircraft was notified of the problem and he determined the plane was safe to fly with the standby alternator. He asked that the landing gear circuit breaker be pulled before start-up and remain pulled for the entire flight. I was told to fly to destination with the landing gear extended and the gear motor inoperable. I was also asked to try turning the emergency gear extension handle fully to try to get the 3 landing gear lights to illuminate. I did perform as instructed but still did not receive 3 landing gear lights. I was asked to land with flaps up to avoid a battery strain. I confirmed the gear was down by sighting the landing gear through the convex mirror mounted on the pilot side tip tank. Upon landing the landing gear collapsed under the weight of the aircraft. The landing gear and propeller were damaged. I exited the aircraft with my passenger without injury. The aircraft was towed from the runway for local repairs.




Synopsis: Beechcraft A36 pilot reported a landing gear collapse upon landing.  The previous day; the pilot reported that the aircraft had gear issues.