Post-maintenance flight tests are often required by FAA regulations (FAR 91.407) to verify work, especially after significant changes or upgrades, as even minor ...

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 ...