Porsche PFM 3200

These relatively small engines displaced about 1.6 litres (97 cubic inches) and produced between 41 and 52 kW (55 and 70 hp), depending on the version.

However, when fully accessorized, they were heavier and larger than competitive engines, especially in cross-section (important for aerodynamics).

It is suggested that the program cost it US$75 million to develop and produce the small number of engines delivered (about 80).

[3] Although marketed for only a short period, the PFM was found on a variety of aircraft as the primary powerplant, or as one-off modifications.

[4] In March 2009, the FAA issued a special airworthiness information bulletin stating that type certificates for existing aircraft with the PFM 3200 engine were still valid and would remain so as long as the aircraft meet Federal Aviation Regulations maintenance and operation requirements.

Porsche PFM 3200 aircraft engine in Technik Museum Speyer
PFM 3200 on display