When I started in 1959, it was
CISTRS!
Controls,
Instruments,
Spoilers (although we did not have them 'till later),
Trim,
Release and
Straps.
At some later stage there appeared to be a move towards becoming aligned with the BGA system - initially CBSITCB, Controls, Ballast, Straps, Instruments, Trim, Canopy and Brakes, then latterly CBSI
FTCB, by adding Flaps.
Not too sure whether this occurred before the move to GRP, but suspect it did because the little Dymo Tape embossed aide memoirs on the instrument panels of the Mk111 and T21 disappeared over time.
Seems that CBSIFTCB has stood the test of time, now with E for
Eventualities added.
No doubt the cadets of today have to read their cockpit checks from a published list! Perhaps one of the youngsters will be along soon to enlighten us