Buoyed from their Trislander design, in 1972 BN scaled the concept up into a Hercules replacement; a 100-seat, Dart-engined, fixed undercarriage(!) transport. Production was to be undertaken in Belguim, but unfortunately sufficient interest was not generated and the programme was shelved.
A display model was created in British Air Ferries livery, but is illustrated here in BN demonstrator colours. Awkward looking engine cowlings are as per BN published 3-views.