Functionally checks all aircraft systems, flight instruments, and onboard computers e.g., Communications Navigation Identification Unit, Heads Down Display (HDD), the Self Contained Navigation System (SCNS), Inertial Navigation System (INS), Traffic Alert and Collision Avoiding System (TCAS), Ground Collision Avoidance System (GCAS) and Multi-functional Control Display. Typical missions assigned the unit include the airlift of equipment and personnel, combat airdrop, medical evacuation, polar operations, search and rescue, fire fighting, special operations, combat aircrew training, formal school, and counter drug intelligence and reconnaissance.