Virgin Australia Regional F100 near Argyle on Mar 7th 2014, flight control problems

A Virgin Australia Regional Airlines Fokker 100, registration VH-FZO performing flight DJ-9203 from Perth,WA to Argyle,WA (Australia), was enroute at FL350 about 130nm northeast of Perth when the aircraft, on autopilot, uncommandedly descended to FL346. The crew disconnected the #1 autopilot and continued the flight. Later, while on approach to Argyle, the crew found the thrust levers were stiff, the pilot monitoring took control of the thrust levers. The crew continued for a safe landing, the #2 thrust lever however remained stuck after landing.

Australia's ATSB have opened an investigation into the occurrence.