What Jetalc said.....
I like method #2 assuming DME is available. In a big airplane lead the decent by .3nm and you won't ballon over the glide path.
Originally Posted by Jetalc
It's easy:
Two ways, depending on what you have available to you -
1. Time: take 10% of the HAT - that will give you time (in seconds) from VDP to the end of the runway (or MAP). If your HAT is 300, 10% of 300=30, therefore you take 30 seconds off of your time from the FAF.
2. DME: divide your HAT by 300. If your HAT is 330', 330/300=1.1. Your VDP is 1.1 miles from the MAP. Back off 1.1 DME from your MAP, and you're good to go.
Hope I didn't screw that explanation up...
