From our very first flight lessons we were taught to check for “full and free correct movement” of flight controls. Every preflight, whether it is for a normal flight or a post-maintenance test flight ...

Any time you change a flight control’s mass, it negatively affects the speed at which the flight control can flutter. The mass of a flight control can change due to drain holes getting plugged as well ...

Faulty maintenance work on the pitch control rigging caused the Colgan Air Raytheon Beech 1900D crash just after take-off from Hyannis, Massachusetts, on 26 August 2003, according to the US National ...