Quote:
Originally Posted by tgrayson  Two common reasons are - Remote altimeter settings
- Lack of DME source to detect VDP
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you can use time to calculate VDP.
VDP= Missed Approach Time – (10% of HAT [Height Above Touchdown])
example:
The HAT at MDA is 450 FT.
The MAP is 2:45 from the Final Approach Fix at 90 kts.
450 ÷ 10 = 45
2:45 – 45 = 2:00
2 minutes from the FAF is the VDP.
probly has nothing to do with why its not depicted on the chart, but this works great if you dont have DME
If you do have DME, just divide the HAT by 300.
example:
HAT=600
600 ÷ 300 = 2 VDP is 2 DME from MAP