After hitch-hiking through Germany in late summer 1966 my chum and I flew as pax DUS-LTN in an Autair Ambassador early in September (can't remember the exact date or the aircraft reggie).
The flight was uneventful until mid-cruise when one of the cabin crew dropped a tray of cutlery in the galley. The clatter instantly silenced all conversation in the cabin for a few moments, with the passengers nervously looking for the source of the noise.
The night landing was firm, but of course in those years the threshold of R26 sloped upwards and therefore required an earlier flare and later power reduction to avoid same, especially in strong westerly wind conditions when this topographical anomaly triggered an associated downdraught.
IIRC the theshold was raised some years later to reduce this problem.