The category "<flight_id-not_creatable-sing>" can be expressed as follows:

<flight_id-not_creatable-sing>

<flight_noun-sing> of <digit-pl> <specific_aircraft_type-pl>

<flight_noun-sing> of <specific_aircraft_type-pl>

<flight_type-not_creatable-sing>

<ordinal-sing> <flight_type-sing>