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.
I believe weight is also "Most unfavorable" not just gross weight, just like most unfavorable CG is not always full aft. Its all in the Airplane Flying Handbook.
Also Vmc decreases as weight increases. Single Engine performance decreases with an increase of weight, but Vmc actually decreases.