scope:

This instruction applies to all Navy activities engaged in HRST and cast recovery operations as a part of their mission except: United States Marine Corps (USMC) personnel, their assigned U.S. Navy personnel, and personnel conducting search and rescue (SAR) operations. USMC personnel and U.S. Navy personnel assigned to Marine Corps units are governed by reference (a). U.S. Navy personnel performing cast and recovery and or rappel operations in support of official Navy SAR duties are governed by reference (b).

Purpose. To establish policy and assign responsibilities for Navy helicopter rope suspension techniques (HRST) and helicopter cast recovery operations.