Agree with BEAGs mate
Think DABLE was invented by CABAIR and was part of there Standard Preflight briefing Document. i.e. an attempt to introduce Standards into PPL training as they saw it!!!!!!!!!
Most FIC schools seem to teach this now, however R D Campbell and Trev Thom do not use it in there books ( or for that matter Birch and Branson and other early text books )
When I learnt to fly in 66 we had pretake off and landing vital actions HASEL and FREDA (without the R as it was not fitted ).
Think teaching skill is being replaced by PAT APT, Hat, Hatfire
and God knows what else.
Its the GPS, check list, massive cct, 10mile final with 2500 rpm set, mentality that seems to exist nowadays. Real skill is being replaced by pseudo actions and statements, a lowering of standards just so the people can pass an exam instead of actually learning to FLY and Navigate !!
(Flack Jacket an tin hat on )