PA-60 600 Aerostar
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 18; Flight Crew Total 2662; Flight Crew Type 11
Aircraft Equipment Problem Critical; Ground Event / Encounter Ground Strike - Aircraft; Ground Event / Encounter Loss Of Aircraft Control
Aircraft Aircraft Damaged; Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
On approach to ZZZ1 the left main gear light did not illuminate.  After perfoming the relevant emergency checklists; I landed at ZZZ with the left main gear retracted.  The aircraft is currently being inspected.
The reporter stated that there is no alternate extension for the landing gear except to bleed off the hydraulic pressure and allow the gear to fall out on it's own. The reporter also stated that the L/G has no uplock; it's just held up using hydraulic pressure. The reporter stated that due to burning off fuel he had plenty of time to try various ways to lower the gear; but was unsuccessful. The reporter stated that during landing with the Left MLG in the up position the aircraft collected a whole bunch of debris. After the aircraft was taken to a hangar and the debris was removed; the landing gear came out normally.
PA-60 pilot reported the left main landing gear did not extend during final approach.