Enumeration Members
AIRSHIP
AIRSHIP: "Airship"
BALLOON_CAPTIVE
BALLOON_CAPTIVE: "Captive Balloon"
BALLOON_MANNED
BALLOON_MANNED: "Manned Free Balloon"
GLIDER_MOTOR
GLIDER_MOTOR: "Motor-Glider"
HELICOPTER
HELICOPTER: "Rotorcraft"
ORNITHOPTER
ORNITHOPTER: "Ornithopter"
POWER_AIRCRAFT
POWER_AIRCRAFT: "Power Driven Aeroplane"
UNKNOWN
UNKNOWN: "Unknown"