Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Engineer
Flight Crew Last 90 Days 3; Flight Crew Total 7651; Flight Crew Type 91
Workload; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
I completed 3 touch and go at ZZZ. I had turned out to the NE climbing through 1;500 feet and heading about 059 degrees when I noticed a vibration. I turned slowly back toward the field (about 239 degrees) and tried to isolate the vibration by slowly retarding the throttle. During this time I heard a bang and my windshield was covered in oil (I was not able to see through the windshield). I immediately shut both ignition switches off and turned master electrical and boost pump off. I then proceeded to slide the canopy open to see out. After I got the canopy open I saw ZZZ and got the aircraft trimmed and set at best rate of descent from 85 mph to 65 mph and preceded to ZZZ. I had to do s-turns to get down to safe altitude for final and landing at ZZZ. After roll out and post inspection revealed the Spinner/Prop/Flange missing. On further investigation; revealed the crankshaft sheared.
Experimental aircraft pilot reported an uneventful forced landing due to Prop Assembly failure.