Originally Posted by
etflies
The memory aid I used was 4 engine, 4 congifuration, 2 weight, 2 pilot input...
4 engine:
- Critical engine inop
- Prop on critical engine windmilling (unless autofeather installed)
- Takeoff or max avail. power
- Seal Level
4 Configuration
- Gear up
- Flaps in T/O position
- Cowl flaps in T/O position
- Max seal level gross weight
2 Weight
- Max sea level gross weight
- Most unfavorable CG (usually aft)
2 Pilot Input
- Airplane airborn and ground effect negligible
- Up to 5 degrees of bank towards operative engine
Other members explain how these change Vcm, but this memory aid helped me. Good luck.
That is your worst-case scenario. If something is different, Vmc should be lower (and therefore easier to recover from an engine failure). Make sure you understand why each of these is the worst, and know why a different setting lowers Vmc.