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1.
The "jesus bolts" are the small, high-tensile bolts that attach the rotor pitch control push rods to the swash plateon a helicopter.

If one of these bolts fails, then one of the 'copter's rotors will be decoupled from the cyclic/collective pitch control, which is generally thought of as a Bad Thing; they are so called because if you've led a good life, afther the failure Jesus is the next person you meet.

See also zero survivability incident
Pilot: "Is this thing good to go ?"
Engineer: "Yeah, we even gave you new Jesus Bolts !"
Pilot: "Gee, thanks."
by eighthofseven August 13, 2007
12 4