The last time i put wind on a flight plan was 1990...taking a Queen Air from POM to Honiara, via Gizo...in the middle of the night...no GPS....no DME after about 80 Gurney...ADF doing poor mans weather radar impersonation due plenty of CBs (Equatorial Nocturnal?
). Nothing close to on track anyway...no VOR until 80 odd miles Honiara.
Weather forecast said NW at 20 odd....steered heading for an hour or two...bad feeling in pit of stomach...decide that it's wrong time of year for NW winds, must be SE Trades...guestimate 1 in 60...heart in mouth change heading 30 + degrees....1 hour later and 5 minutes early bust through a line of cells and see Gizo on the nose at 15 or 20 miles....now the ADF points straight ahead...for the first time
Finished off with a georgous full moon trip down the Slot to Honiara.
I still use 1 in 60 occasionally at Mach .80/FL410 with dual FMSs. Good way to calc how far left or right is needed to get around a big nasty red blotch on the wx radar
Chuck.