The SCA method ive been shown seems to differ again fom what others have quoted, this one seems real easy to me if you are in flight. If you use the fan lines you should have an at a glance indication of the track error, then use this:
TAS- MILES/MINUTE- Standard Closing Angle
90- 1.5- 20 Degrees
100- 1.7- 18 Degrees
110- 1.8- 17 Degrees
120- 2.0- 30 Degrees
So....
Adjust heading accordingly by the appropriate amount in relation to your TAS as above and fly the revised heading for 2 minutes for every nautical mile off track.
eg: TAS 90kts - alter heading by 20 degrees and fly revised heading for 2 minutes for every nautical mile off track, to regain planned track.
You will need to assesss why the track error occurred (w/v not as forecast or DI and Compass not aligned frequently) but thats another story...
Hey Evo, Ive attempted to answer a NAV question, hey things must be looking up....
Speedy
