Flyforyou
Well-known member
- Joined
- Jan 3, 2004
- Posts
- 137
For those aircraft without EGPWS, this method works spot on for terrain avoidance. This came from Archie of course...
Tilt radar down until the distance out you paint the ground is the same as your altitude in AGL... example: you're 25,000' AGL, tilt to paint at the 25nm range.
Now tilt up 6 degrees.
You now have your radar set to paint down 400' for every 1nm forward, so at the 5nm scale, you're painting down 2000'(moutainous terrain clearance altitude). Don't let anything get inside of 5nm and you're golden.
Try this on a clear day to test it out. On final at 400' AGL, check to make sure your radar is painting ground at 1nm out.
The article goes on the explain how this method could have easily prevented that military 737 accident over in Dubrovnik a while back.
Fly
Tilt radar down until the distance out you paint the ground is the same as your altitude in AGL... example: you're 25,000' AGL, tilt to paint at the 25nm range.
Now tilt up 6 degrees.
You now have your radar set to paint down 400' for every 1nm forward, so at the 5nm scale, you're painting down 2000'(moutainous terrain clearance altitude). Don't let anything get inside of 5nm and you're golden.
Try this on a clear day to test it out. On final at 400' AGL, check to make sure your radar is painting ground at 1nm out.
The article goes on the explain how this method could have easily prevented that military 737 accident over in Dubrovnik a while back.
Fly