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- Spitfire_Mark_I abstract "The Spitfire Mark I was a utility helicopter built in the United States in the late 1970s and intended for series production. In essence, the Mark I was an Enstrom F-28 that was modified to use an Allison 250 turboshaft engine and geared transmission in place of the original piston engine and system of vee belts. The resulting powerplant installation was lighter and more compact, which allowed for additional cargo or fuel.Spitfire Helicopters' parent company, Fetsko Aviation Sales and Transportation began work on the prototype in January 1976, and on a number of pre-production aircraft in February 1977. Fetsko displayed a mockup of the concept at the National Maintenance and Operations Meeting at Reading, Pennsylvania in June 1976.The prototype (registered N4890) first flew in December 1978. By May 1979, Spitfire had supplemental approval for the turbine conversion and by July, the company reported that it had sold 42 examples of the Mark I and Mark II and expected to build 60 aircraft during 1980. The engine installation on production models was to be slightly further forward than on the prototype.However, Spitfire remained dependent on Enstrom to supply airframes for remanufacture, and Enstrom distanced itself from the project somewhat. Competing plans by Enstrom and Spitfire to market Polish-built Mil Mi-2 helicopters in the United States might have contributed to the friction. In Spitfire's version of the deal, Polish manufacturer PZL-Świdnik would also contribute to the Spitfire manufacturing efforts. By November 1979, Enstrom refused to supply airframes to Spitfire.The situation improved somewhat in the 1980s, and Spitfire president Jack Fetsko reported in May 1983 that relations with Enstrom had improved to the point where the two companies could "talk programs". By that time, costs had increased from $US 165,000 expected in 1979 to $US 285,000 but Spitfire had taken deposits for 50 Mark Is, and had a firm sale for the first production aircraft. Together with companies Sodian and Soprea, Spitfire formed a new venture, Spitfire Helicopters International, to manufacture the Mark I and Mark II in Málaga, Spain.Nothing came of the joint venture, and Spitfire's attempts to market F-28 derivatives came to an end. In the 1990s, Enstrom marketed its own turbine-powered version of the F-28 as the Enstrom 480.".
- Spitfire_Mark_I manufacturer Spitfire_Helicopter.
- Spitfire_Mark_I predecessor Enstrom_F-28.
- Spitfire_Mark_I wikiPageExternalLink 1976%20-%201155.html.
- Spitfire_Mark_I wikiPageExternalLink 1977%20-%200429.html.
- Spitfire_Mark_I wikiPageExternalLink 1979%20-%201093.html.
- Spitfire_Mark_I wikiPageExternalLink 1979%20-%201510.html.
- Spitfire_Mark_I wikiPageExternalLink 1979%20-%201642.html.
- Spitfire_Mark_I wikiPageExternalLink 1979%20-%202510.html.
- Spitfire_Mark_I wikiPageExternalLink 1979%20-%204018.html.
- Spitfire_Mark_I wikiPageExternalLink 1983%20-%200780.html.
- Spitfire_Mark_I wikiPageID "31096373".
- Spitfire_Mark_I wikiPageRevisionID "533442041".
- Spitfire_Mark_I capacity "two passengers".
- Spitfire_Mark_I ceilingFt "15000".
- Spitfire_Mark_I ceilingM "4570".
- Spitfire_Mark_I crew "one pilot".
- Spitfire_Mark_I developedFrom Enstrom_F-28.
- Spitfire_Mark_I emptyWeightKg "567".
- Spitfire_Mark_I emptyWeightLb "1250".
- Spitfire_Mark_I eng1Hp "420".
- Spitfire_Mark_I eng1Kw "313".
- Spitfire_Mark_I eng1Number "1".
- Spitfire_Mark_I eng1Type "Allison 250-C20B".
- Spitfire_Mark_I firstFlight "December 1978".
- Spitfire_Mark_I grossWeightKg "1043".
- Spitfire_Mark_I grossWeightLb "2300".
- Spitfire_Mark_I hasPhotoCollection Spitfire_Mark_I.
- Spitfire_Mark_I heightFt "9".
- Spitfire_Mark_I heightIn "2".
- Spitfire_Mark_I heightM "2.79".
- Spitfire_Mark_I lengthFt "29".
- Spitfire_Mark_I lengthIn "5".
- Spitfire_Mark_I lengthM "8.96".
- Spitfire_Mark_I manufacturer Spitfire_Helicopter.
- Spitfire_Mark_I maxSpeedKmh "208".
- Spitfire_Mark_I maxSpeedMph "129".
- Spitfire_Mark_I metOrEng%3F_ "eng".
- Spitfire_Mark_I nationalOrigin "United States".
- Spitfire_Mark_I rangeKm "724".
- Spitfire_Mark_I rangeMiles "450".
- Spitfire_Mark_I ref "Taylor 1977, p.411".
- Spitfire_Mark_I rotAreaSqft "804".
- Spitfire_Mark_I rotAreaSqm "74.7".
- Spitfire_Mark_I rotDiaFt "32".
- Spitfire_Mark_I rotDiaIn "0".
- Spitfire_Mark_I rotDiaM "9.75".
- Spitfire_Mark_I rotNumber "1".
- Spitfire_Mark_I type "utility helicopter".
- Spitfire_Mark_I unitCost "$US 285,000 in 1983".
- Spitfire_Mark_I subject Category:Spitfire_Helicopter_aircraft.
- Spitfire_Mark_I subject Category:United_States_civil_utility_aircraft_1970–1979.
- Spitfire_Mark_I subject Category:United_States_helicopters_1970–1979.
- Spitfire_Mark_I type Aircraft.
- Spitfire_Mark_I type MeanOfTransportation.
- Spitfire_Mark_I type Product.
- Spitfire_Mark_I type DesignedArtifact.
- Spitfire_Mark_I comment "The Spitfire Mark I was a utility helicopter built in the United States in the late 1970s and intended for series production. In essence, the Mark I was an Enstrom F-28 that was modified to use an Allison 250 turboshaft engine and geared transmission in place of the original piston engine and system of vee belts.".
- Spitfire_Mark_I label "Spitfire Mark I".
- Spitfire_Mark_I sameAs m.0gh8yvm.
- Spitfire_Mark_I sameAs Q7578300.
- Spitfire_Mark_I sameAs Q7578300.
- Spitfire_Mark_I wasDerivedFrom Spitfire_Mark_I?oldid=533442041.
- Spitfire_Mark_I isPrimaryTopicOf Spitfire_Mark_I.