It's the only helicopter I've operated with a max rate of climb limit (3000fpm, ISTR), apparently due to a 3-axis shuffle which developed during test-flying when that RoC was exceeded. As the aerodynamicists were unable to provide an explanation, a limitation was imposed.
As for the aircraft at Odiham decoupling on lifting to the hover (remember it well, it was on the first day of Chinook groundschool for my course) - at least the Chinook had fuel disconnect switches available in the cabin (as operated by the good Sqn Ldr as he departed the airframe). I believe that a CH53/ Sikorsky S65 variant that suffered a heavy landing which caused the disc to droop so far as to turn the cockpit into a cabriolet had no such feature, which meant that the aircraft had to be left turning and burning until the fuel supply was exhausted.