What memories doth the sight of the old deccometers stir? Line checks in the S61 when the likes of Tip Cap would switch off the Decca Flight Log and tell you to plot your track on a Decca chart from the deccometers. Arriving at a critical point en route to the Transworld 58 when the copilot announced he had brought the wrong key. Never ending ground speed checks over 10 miles when battling into a headwind with marginal fuel with the Haar coming in. It all seems a bit tame nowadays.