{"product_id":"fiat-ansaldo-ac4-engine-assembly-manuals-collection","title":"Fiat\/Ansaldo A.C.4 — Engine \u0026 Assembly Manuals Collection","description":"\u003ch3\u003eFiat\/Ansaldo A.C.4 — Engine \u0026amp; Assembly Manuals Collection\u003c\/h3\u003e\n\u003cp\u003ePrimary-source technical documentation for the \u003cstrong\u003eFiat\/Ansaldo A.C.4\u003c\/strong\u003e, the single-seat fighter prototype developed by Aeronautica d'Italia S.A. (Torino) in the mid-1920s. Only one prototype was ever built and flown, in 1927, making surviving factory documentation of exceptional rarity. This collection brings together the two known surviving primary-source manuals for the airframe and its powerplant.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDocuments in This Collection — 2 Manuals\u003c\/h3\u003e\n\u003ch4\u003e1. Fiat A.20 Series IV Aircraft Engine — Operating Instructions, 1929\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003eIstruzioni per l'Uso del Motore Fiat A-20, IV Serie\u003c\/em\u003e\u003cbr\u003eMinistero dell'Aeronautica — Direzione Generale delle Costruzioni e degli Approvvigionamenti\u003cbr\u003ePublished: Roma, Provveditorato Generale dello Stato — Libreria, 1929 (Anno VII)\u003cbr\u003eLanguage: Italian\u003c\/p\u003e\n\u003cp\u003eOfficial operating instructions for the \u003cstrong\u003eFiat A.20 V12 inline water-cooled engine\u003c\/strong\u003e (410 hp) as fitted to the A.C.4 prototype. Covers engine operation, maintenance intervals, and valve-timing procedures. The Fiat A.20 was shared with the Fiat CR.20 fighter programme, making this document a cross-reference source for both aircraft families.\u003c\/p\u003e\n\u003ch4\u003e2. Aircraft Assembly and Adjustment Instructions — 1928\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003eApparecchio A.C.4 — Istruzioni per il Montaggio e la Regolazione\u003c\/em\u003e\u003cbr\u003eAeronautica d'Italia S.A., Torino — Ministero dell'Aeronautica, Direzione Generale del Genio Aeronautico\u003cbr\u003ePublished: Roma, Provveditorato Generale dello Stato — Libreria, 1928\u003cbr\u003eLanguage: Italian\u003c\/p\u003e\n\u003cp\u003eFactory assembly and adjustment manual for the A.C.4 airframe. Covers physical layout schematics, wing rigging specifications, and adjustment procedures as used during the prototype's 1927–1928 assembly and evaluation phase. The A.C.4 was a parasol-wing monoplane derived from licensed Dewoitine D.1 design principles, armed with twin 7.7 mm Vickers machine guns synchronized through the propeller arc.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eHistorical Context\u003c\/h3\u003e\n\u003cp\u003eThe A.C.4 programme was retired on \u003cstrong\u003e15 February 1929\u003c\/strong\u003e after evaluation by the Regia Aeronautica, which favoured the superior biplane fighter designs then available — principally the Fiat CR.20. The single prototype was struck from the service registry in 1929. These two documents represent the primary surviving technical record of the aircraft.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Parasol-wing monoplane (derived from licensed Dewoitine D.1 designs)\u003cbr\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e Fiat A.20 V12 inline water-cooled — 410 hp\u003cbr\u003e\u003cstrong\u003eArmament:\u003c\/strong\u003e Twin 7.7 mm Vickers machine guns, synchronized\u003cbr\u003e\u003cstrong\u003eProgramme closed:\u003c\/strong\u003e 15 February 1929\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eThis is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eLiving Collections with Free Lifetime Updates — Please review our Disclaimer and Export Notice before purchasing.\u003c\/p\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":53690709049691,"sku":null,"price":25.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/fiat-ansaldo-a-c-4-portrait-banner.png?v=1785436242","url":"https:\/\/onlineaviationlibrary.com\/products\/fiat-ansaldo-ac4-engine-assembly-manuals-collection","provider":"Online Aviation Library","version":"1.0","type":"link"}