Highest credit quality Indicates the strongest capacity for timely payment of financial commitments; may have an added "+" to denote any exceptionally strong credit feature
The first filial generation; the offspring of an outcross between two inbred strains (see Chapter 3)
FAI class prefix for uncontrolled models (free flight): F1A FAI class for outdoor, free flight glider models F1B FAI class for outdoor, free flight rubber powered glider models F1C FAI class for outdoor, free flight combustion engine powered glider models F1D FAI class for indoor, free flight rubber powered glider models