Cessna 337 Super Skymaster
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Commercial
Flight Crew Last 90 Days 25; Flight Crew Total 800; Flight Crew Type 5
Aircraft Equipment Problem Critical; Ground Event / Encounter Ground Strike - Aircraft
Aircraft Aircraft Damaged; Flight Crew Landed As Precaution
Aircraft
I was practicing pattern work and familiarization with the aircraft. After takeoff; I switched the gear handle to up. The light stayed green-gear did not retract. I switched the handle back down to the down position. I called Tower and asked them if my gear appeared to be down. They said; 'Yes; gear appears to be down.' I looked at the main gear and I had a wheel on either side; locked in position. I was cleared to land. I turned base and then final. Final approach was normal. I landed the plane without incident. Turning left from the runway to the taxiway; the nose wheel retracted. While sliding; I pulled the mixture to turn the engines off and I turned the ignition and fuel off. I told Tower that we would need help getting off the runway. At no time did I declare an emergency. When the nosewheel retracted; there was a front engine prop strike on the runway. There was no leaking fuel or environmental issues. There was no damage to the runway. Tower called the ARFF crew to report.
C337 pilot reports failure of the landing gear to retract after takeoff with green indications. The gear handle is placed down with the green indications remaining steady. After landing during taxi off the runway the nose gear collapses.