But first, before the Navy gives its airplanes into the hands of the crews, a rigid schedule of inspection and maintenance must be observed. This is the 30-hour check, when plane captain and his crew swarm over their Beechcraft transport to insure airworthiness. The engine, propeller, cowling, skin, controls, rudders--every part is checked and inspected for the effects of wear and weather. Note here the quartet beneath the empennage going over every inch of the elevator and its controls.