scope:

This instruction applies to all U.S. Navy, U.S. Coast Guard (USCG), and Military Sealift Command (MSC) ships whose missions include the conduct of flight operations and require installation of aviation facilities and equipment. Per reference (a), there are three distinct categories of afloat aviation facilities: Aviation Ships (CV/CVN), Amphibious Aviation Ships (AAS) (i.e., LPH/LHA/LHD), and Air Capable Ships (ACS). ACSs are defined as all ships other than CV/CVN and LPH/LHA/LHD which have an aircraft operating capability (i.e., landing, take-off, vertical replenishment, or helicopter in-flight refueling).

NOTE: For the purpose of this instruction, MSC area commanders are considered Type Commanders (TYCOMs). Commander, MSC is considered a Fleet Commander, and Commander, Coast Guard Atlantic and Pacific are considered TYCOMs.