[BwanaNdege]

This computer usually does a decent job of telling a pilot whether he can take off on a hot day.

(or the modren electronic version)

[BwanaNdege]

That or the Chief Engineer yelling, "We ain't gonna make it , Capt'n. She's fixin' to blow!"

[gfbtbb]

I prefer that old school version. No batteries to die.