Misc: in scrabble, which letter is worth 6 points?

Questions

name t.c.'s helicopter tour company on "magnum p.i."?

name that show: jerry van dyke is related to an automobile.?

name that show: murray, cody, nick & roboboz live on a boat & solve crimes.?

name the airplane used in "sky king." (name of the plane, not make/model)?

name the big, black truck used to shuttle k.i.t.t. from place to place.?