<Note to self: next time I need to bear in mind the cognitive abilities of the recipient>
Well you are the senior citizen so cognitive abilities are bound to concern you more than me
So I will see your DECCA and raise you Doppler Mini-TANs which was as much use as tits on a fish!
DB, I've done the IFR AH1 Gazelle stint too - the LWNA, lightweight nav aid was no better - just a doppler based system that always wandered.
The Lynx TANS was just as crap!
We keep going until we get to a magnetised darning needle in a pool of the co-pilots piss and a hand drawn map from a Pirates stash!
or Wessex night flying in the mountains with no goggles using a clock and the compass