Robin Clark
The initial position entered into the kit and the first waypoint do not have to be in the same place.
If the aircraft intended to lift off say, from the centre of the airfield, but exit via the light airfield, then having it as Waypoint A is quite reasonable.
By itself, it gives no indication as to how good the TANS was at that point.
Perhaps my definition of Waypoint and yours are different.
And yes, I have seen precision aids, such as Supertans and HINS (GPS/IN) give errors of 2miles and over without any fault indications.
Not only that, subsequent investigation of complete and undamaged equipment on the ground has failed to reproduce any fault.
Last edited by dalek; 21st Jan 2010 at 12:27.