wing-mounted NATO standard pylons capable of carrying 350 lb (159 kg) each for 7.62 mm and 12.7 mm gun pods, rocket launchers, bombs, markers and flares. The aircraft was marketed for the target identification and marking, reconnaissance, helicopter escort and aerial photography roles. Examples were sold to the Haitian Air Force, Honduras, Nicaragua, Senegal and the Thai Navy. The variant was still in production in 1987. Spectrum SA-550 - built by Spectrum Aircraft Corporation of Van Nuys, California, it was an extensive single-turboprop engine conversion of a Reims FTB337G constructed in the mid 1980s. They removed the nose engine, lengthened the nose, and replaced the rear engine with a turboprop. VoltAero is a startup company formed in September 2017 by the CTO and test pilot of the 2014 Airbus E-Fan 1.0. The company has been established in Royan, with support from the French Nouvelle-Aquitaine region. It is developing a hybrid electric aircraft testbed based on the Skymaster, which is intended to fly in late February 2019. It will be followed up by the VoltAero Cassio prototype in 2020, a clean-sheet, all-composite design. Ampaire Electric EEL: a hybrid electric aircraft with the rear piston engine replaced by an electric motor powered by a battery, in a parallel hybrid configuration. The demonstrator first flew on 6 June 2019, before Hawaiian regional carrier Mokulele Airlines experiment connecting Maui airports with the aircraft. Military operators Former military operators Specifications (337D) See also References Taylor, John W. R. Jane's All The World's Aircraft 1969–70. London: Sampson Low, Marston & Company, 1969. . "World Air Forces 2004". Flight International, 16–22 November 2004. pp. 41–100. External links Photo of the Cessna 327 Baby Skymaster Skymaster Twin-engined push-pull aircraft 1960s United States civil utility aircraft Twin-boom aircraft High-wing aircraft Aircraft first flown in 1961