Main Rotor Head Positions

Question 1

Engine start positions(7)

Answer 1

Detected by #15 slip ring
MRH Rotation: Counter clockwise

Question 2

Blade Fold Positions (1)

Answer 2

Detected by #11 slip ring
MRH Rotation: clockwise or counter clockwise, dependent upon the #13 slip ring

Question 3

Pylon Fold Positions (7+1)

Answer 3

Detected by #11 slip ring
Any MRB over the Tail (7)
All MRBs are folded and the “Blades folded” switches