Important note for all Quick-Out karabiner users! Please observe the safety message Quick-Out carabiner 4.2019 and check your karabiners accordingly before the next take off. There may be Quick-outs in use which can release when only one of the two release buttons is depressed.
Finsterwalder & Charly
The faulty assembly of a Quick-Out carabiner led to its accidental opening. The pilot had dismounted both of the Quick-Out's release buttons and later re-installed them in swapped positions. Swapping the release buttons is dangerous! In the instruction manual, the manufacturer points out that the release button located on the opposite side of the installation slot must not be dismounted when attaching the carabiner to the harness.