There are actually 11 factors now. At least this is what I was taught last month. (I am currently doing Mutli-Engine training in a Seminole) My instructor mentioned to list them as in order of flight preparation and occurrence, like you are doing a preflight plan and then you pretakeoff and then takeoff then cruise
1. Weight (Unfavorable=Light)
2. CG (Unfaborable=Aft)
3. Density Alt=0
4. Trim: set for Takeoff
5. Flaps: set for Takeoff
6. Cowl Flaps: set for Takeoff
7. Propeller [Critical Eng] windmilling
8. Max available takeoff power op. eng
9. Gear up (This is unfavorable: no keel effect)
10. Out of Ground Effect
11. Max of a 5degree bank towards op eng
Know how each affects the
controlability and the
performance.
These are the items which each multi airplane is certified with by the FAA standards when calculating it's Vmc.
Hope it helps!
