Arresting hook systems for aircraft

A pivot assembly for use with an arresting hook, the pivot assembly comprising

• a coupler having a first opening defining a first axis and a second opening defining a second axis, the first opening transverse relative to the second opening;
• a linkage arm having a body and an arm, the body including a third opening defining a third axis, the first opening of the coupler to receive the body of the linkage arm such that the second opening of the coupler coaxially aligns with the third opening of linkage arm, the arm extending rearward of the body, an end of the linkage arm opposite the body includes a clevis;
• and
• a pin to extend through the second opening and the third opening to couple the coupler and the linkage arm.

A pivot assembly for use with an arresting hook system, the pivot assembly comprising:

• a coupler to couple to a clevis of a hook shank;
• a linkage arm having a shaft and an arm, the shaft to extend through the clevis of the hook shank and the coupler, the arm to extend at angle relative to the shaft;
• and
• a pin to extend through the coupler and the shaft of the linkage arm, the pin to couple the coupler and the linkage arm, an axis of the pin to intersect a longitudinal axis of the shaft when the pin is coupled to the coupler and the linkage arm.

An arresting hook system comprising:

• a trapeze assembly, the trapeze assembly including a pivot plate;
• a hook assembly including a hook and a hook shank to support the hook, the hook shank including a clevis opposite the hook;
• and
• a pivot assembly to couple the trapeze assembly and the hook assembly, the pivot assembly including:
• a coupler positioned in the clevis of the hook shank;
• a linkage arm having a shaft and an arm extending rearward of the shaft, the shaft positioned in an opening of the clevis of the hook shank and a first opening of the coupler;
• and
• a pin to couple the coupler and the shaft of the linkage arm, the pin defining a lateral pivot axis that intersects a vertical pivot of the shaft of the linkage arm.