Whether emergencyState declares an emergency. 'none' and 'reserved' do not; every other EmergencyState value does.
emergencyState
'none'
'reserved'
EmergencyState
The aircraft's broadcast emergency/priority state, if known.
True if the state is a declared emergency.
Whether
emergencyStatedeclares an emergency.'none'and'reserved'do not; every otherEmergencyStatevalue does.