Stelio Frati (born in Milan Italy in 1919, died May 14, 2010 ) was an Italian mechanical engineer and aeroplane designer. He graduated from the University of Milan as a Mechanical Engineer in 1943, and after teaching aircraft design became a freelance aircraft designer, being responsible for many well known aircraft designs. One of his best known designs is the Falco F8L .
F.M.1 Passero F.4 Rondone F.5 F.6 Airone F.7 Rondone F.8 Falco F.9 Sparviero F.14 Nibbio F.15 Picchio F.20 Pegaso F.20TP Condor F.22 Pinguino F.30 F.200 F.250 F.260 SF.260 F.400 F.480 SF.600 Canguro (en: "Kangaroo") F.1000 F.1300 Jet Squalus F.2500 F.3000 F.3500 Sparviero Aeromere F.8L America Ambrosini F.4 Rondone Ambrosini F.7 Rondone II Aviamilano F.8L Series I Falco Aviamilano F.8L Series II Falco Aviamilano F.14 Nibbio Aviamilano F.250 - first prototype powered by 187 kW (250 hp) Lycoming O-540-AID Aviamilano F.260 - two prototypes powered by 194 kW (260 hp) Lycoming O-540-E4A5 Caproni Trento F.5* Ditta Movo F.M.1 Passero Frati Sky Arrow Ditta Movo F.M.1 Passero General Avia F.15 Picchio (Italian: "Woodpecker") - prototype with Lycoming O-320 engine and three seats (1 built)General Avia F.15C - version with Continental IO-470 engine and tip tanks (1 built) General Avia F.15D - proposed version similar to F.15B with Franklin engine (not built) General Avia F.15E - all-metal version of F.15B with Continental IO-520K engine (1 built by General Avia) General Avia F.15F Delfino - version of F.15E with bubble canopy (1 built by General Avia) General Avia F.20TP Condor General Avia F.22 Pinguino General Avia F.3500 Sparviero General Avia Airtruck Golden Car F.30 Italair F.20 Pegaso JSC Sokol F.15F Excalibur - F.15F built by JSC Sokol for HOAC Laverda Super Falco Series IV Pasotti F.6 Airone Pasotti F.9 Sparviero Piaggio 149 / Focke Wulf Piaggio 149D Procaer Cobra Procaer F.15A - initial production version with Lycoming O-360 engine and four seats (10 built by Procaer) Procaer F.15B - similar to F.15A but with larger-span wings and fuel tanks relocated from fuselage to wings (20 built by Procaer) Procaer Picchio Promavia F.1300 Jet Squalus Sequoia F.8L Falco SIAI Marchetti SF.260 - Production version of the F.260 SIAI Marchetti SF.260 - Production version of the F.260 SIAI Marchetti SF.260A - Initial production version. Built in small numbers. SIAI Marchetti SF.260M - Militarised version with strengthened airframe and improved aerodynamics SIAI Marchetti SF.260AM - Italian Air Force version. 33 built. SIAI Marchetti SF.260ML - Export version for Libya. 240 built. SIAI Marchetti SF.260W Warrior - Military version with weapons hardpoints SIAI Marchetti SF.260SW Sea Warrior - Coast patrol, fishery protection aircraft. One built. SIAI Marchetti SF.260B - Civilian version incorporating improvements of the SF-260M. Introduced 1974 SIAI Marchetti SF.260C - Improved version of the SF.260B. Introduced in 1977 SIAI Marchetti SF.260TP - Allison 250-B17D turboprop version of the SF.260C; first flown in 1980 SIAI Marchetti SF.260D - SF.260C with uprated engine and other refinements. Introduced in 1985 SIAI Marchetti SF.260E - Uprated SF.260D to compete for a USAF contract but later marketed to other military buyers SIAI Marchetti SF.260F - As above, with fuel-injected engine(8 delivered Nov.2010 to PAF) SIAI Aermacchi SF.260EA - Most recent variant for Italian Air Force. 30 built Vulcanair SF.600 Canguro (en: "Kangaroo") Waco Meteor 
