Part 135 guy, it comes down to two different ways to figure it.
Choice 1. The one you mentioned that fits with the reg better.
Example: 5,000 ft rwy.
AFM: 3200 feet required.
5000 X.6 = 3,000 feet.
You are 200 feet over on AFM runway required, and can not do it.
Choice 2. The AFM/ .60 way.
5,000 ft rwy.
AFM: 3,200 feet required
3,200/.60 = 5,333 feet. You have 5,000ft of runway available. You cant do it. You need 333 more feet.
Think of it as one telling you what you will get, and one telling you what you will need.
Take a 5334 ft rwy now using Choice number 1.
5334 X .60 = 3200 feet.
AFM requres 3200 feet. You can do it.
Last edited by GauleyPilot; 05-18-2010 at 02:30 PM.