Bonanza 35
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor
Flight Crew Last 90 Days 60; Flight Crew Total 3900; Flight Crew Type 17
Aircraft Equipment Problem Critical
Flight Crew Landed in Emergency Condition
Aircraft
On this aircraft; annual inspection is current and the most recent oil change had happened less than 2 flight hours prior; with the mechanic noting that the filter cut check was normal. I had flown the aircraft uneventfully for about 0.9 hours previous to this. Preflight was normal and showed good fuel quantity in all tanks and no evidence of water or sediment in any fuel cell or the main sump. Engine oil was full and run-up checks were normal. I executed a straight-in approach [planning on a touch-and-go]. I conducted my descent check in accordance with the checklist along with a 'GUMPS' check. Final approach and landing were normal. I pushed up power for the 'go' portion and the aircraft initially responded normally.  Shortly after takeoff I heard the RPMs drop and felt the airplane experience a partial power loss. I checked mixture; prop; and throttle all in the full forward position (they were) and maintained landing attitude until touchdown.  During this time I announced (incorrectly) 'engine failure' on Tower frequency. Once the aircraft was down; the engine was still running and I was able to taxi clear of the runway.  At this point; after continued power manipulation the engine stopped. I maintained radio contact with Tower until a tug arrived to taxi the aircraft back to the hangar. I documented throttle/mixture settings; fuel quantity indicators; and checked the sumps. There was no apparent damage to the aircraft or any property; and no injuries.
BE35 pilot reported a safe landing following a partial power loss shortly after takeoff.