Model Variants (Including Prototypes)
S.E.5 - Initial Production Version designation; fitted with Hispano-Suiza 150hp engine.
S.E.5a - "Improved" S.E.5 model; fitted with 200hp engine; shortened wings and integrated pilot head-rest.
S.E.5b - Redesigned wings (shorter lower wing) and nose sections; single production example.
S.E.5e - US Army Air Service Designaton for S.E.5a models produced in America and fitted with Wright-Hispano "E" series engines of 180 horsepower.
"Eberhart" S.E.5e - Eberhart Aeroplane modified S.E.5a models (50 total) with Wright-Hispano E engines of 180 horsepower.