Inspiration:
On February 21, 1990,
commander Hans Lutz, carried out a system training on the Saab 340 aircraft
type with a copilot onboard. The discussion turned to the procedure of
remedying a landing gear retraction fault. The commander was of the opinion
that on the ground, with the landing gear under load, the function of the
retraction mechanism was interrupted. Contrary
to the commander’s assumption, the hydraulic pumps began to work and the
retraction process could not be interrupted. The aircraft impacted on the
ground and was a total loss.
Source:
https://www.sust.admin.ch/inhalte/AV-berichte/1793_e.pdf (chapter 1.5.1.4.2)
