Gavin Grimmer

Hi Nev - Hi Rob,

Yes, I have my own plane (one I built - V8 Powered Maranda Super 14 ZK-JGR) and I have been in very turbulent weather. They say that if you want to know what turbulence is, then come to New Zealand! They also say that flying is 99% shear pleasure, laced with 1% sheer terror! - and I've had a fair bit of sheer terror, so I guess that means I've done a fair bit of flying.
It is an accepted fact that when you are at least 2000 ft above ranges the wind will be constant as of "on the nose" of the aircraft, unless you are in a Cb (thunderstorm). The only thing that changes is the vertical air currents i.e. up draughts and down draughts - and more so in a CB.
Wind "gusts" are produced mechanically by obstructions on the ground such as hills, buildings, etc.
Don't get me wrong, I'm not disagreeing with you. I was only trying to give you suggestions of other possibilities that you may not have thought of before.
You'll note I was suggesting that his altimeter was reading the incorrect height and if this was so, he may well have been down in the mechanical turbulence area and in fact this is most likely what was happening, but as always, you have to keep an open mind.
If his compass was swinging due to magnetic/electrical interference that was coming from outside the aircraft, then this could give you a hint of where he was at the time. I have never been to that part of Australia, so I'm just making suggestions that may be of benefit to you as you have the advantage of knowing the country that he was flying over, and by me making suggestions, they may bring something to mind that you hadn't thought of before.
If the ADF was swinging because it was out of range of the station and his compass was swinging due to some outside influence (such as an Iron Mine), then you need to find an area that fits both of these criteria, and then if everything else such as probable ground speed, etc., fits the scenario, then it would be a good place to look!
Most long lost aircraft are found miles away from where they were supposed to be - take Steve Fossett for example!

Regards,
Gavin