Unusually for a light twin, the Partenavia P.68 has a fixed undercarriage - but this seems to add little drag and the P.68 still has good performance. Built originally by Partenavia and now by Vulcanair in Italy, the P.68C has up to 8 seats and there is also the Viator turboprop version with Rolls-Royce 250 engines and a retractable undercarriage.