08/31/2012. Partenavia developed a turboprop powered version of the P.68 in the late 1970s. The six-seat prototype P.68T, I-PAIT c/n 6001 was fitted with two 330 shp Allison 250-B17B engines and a retractable landing gear, it was flown for the first time on September 11, 1978.
An eight/nine-seat version development, with an all-moving tail plane and fixed undercarriage, was designated AP.68TP-100, the prototype I-RAIP c/n 8001 was first flown on November 20, 1981. I-RAIP was involved in a mishap at Ogliaro, Italy, on July 30, 1982, and subsequently declared a write-off. The aircraft was rebuilt as the first production model AP.68TP-300 with a fixed tail plane and separate elevators, registered I-RAIK it flew for the first time on April 1, 1983 and obtained its Italian Type Certificate in the following December.
It reappeared in 1984 designated AP.68TP-300 Spartacus and registered as
I-SPRV. Subsequently it was listed on the Swiss Registry as HB-LQW on July 14, 1989, while on April 15, 1999 it came on the FAA Registry as N313LC. By April 2007 it had been reregistered N75CY and February 17, 2011 the registration was cancelled as the aircraft was exported to Bolivia.