Have a think, the 9/11 guys you reckon wouldn't have been able to find New York if the GPS system was turned off.
![Big Grin](images/smilies2/eusa_clap.gif)
![Big Grin](images/smilies2/eusa_clap.gif)
Those old yanky airframes were probably pre GPS..... most likely IRS..... so someone stop all the inertia in the world will ya! Its aiding terrorism
Gooday SDD..... good to see ya back!
J