“Bank angle! Bank angle!” The helicopter admonishes me as I heel it over to line up with the runway at Duxford.

The lean angle I am using to turn above the Cambridgeshire airport feels modest, but I can appreciate the verbal warning being expressed by the avionics system of the big Sikorsky S-76C++ I am flying. This is a machine aimed at giving a cosseting ride to passengers cocooned in the luxurious compartment behind me.