Skylane 182/RG Turbo Skylane/RG
Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 5; Flight Crew Total 13368; Flight Crew Type 566
Aircraft Equipment Problem Critical; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Flight Crew Overcame Equipment Problem; Flight Crew Regained Aircraft Control
Aircraft
The mission was to test the airplane after annual inspection. After an extensive preflight of about 45 min; everything looked good. Got into cockpit started engine; talked to Ground Control and taxied to run-up area. Did a through run-up using checklist and all appeared well. Taxied to runway hold line and called Tower. I put myself on very high alert.I was cleared for takeoff and nudged the throttle to taxi onto the runway. The throttle did not respond. (I did check there were no brakes on.) Pushed in the throttle again and WOOOO. That got action; too much in fact. When I went to retard the throttle it would not budge. It appeared to me that there was too much power to make decent turn onto the runway (about 90 deg.) so I let it go onto the grass while wrestling with the throttle. A high power turn is not safe in a three wheeler. I did manage to retard the throttle; told the Tower I had a stuck throttle and I taxied back to the runway. When I got lined I exercised the throttle more and there was no problem. When testing an airplane the tester does need to be on a higher alert than normal for things to go sideways.
C182 pilot reported a sticking throttle led to a runway excursion.