{"product_id":"lycoming-t-55-aircraft-engines-manuals-collection-download","title":"Lycoming T-55 Aircraft Engines Manuals Collection - Download","description":"\u003ch2\u003eLycoming T-55 Aircraft Engines Manuals Collection\u003c\/h2\u003e\u003cp\u003eA comprehensive digital collection of official U.S. Army technical manuals covering the \u003cstrong\u003eLycoming T-55 turboshaft engine\u003c\/strong\u003e — the powerplant of the legendary \u003cstrong\u003eBoeing CH-47 Chinook\u003c\/strong\u003e heavy-lift helicopter. This collection spans the T-55-L-712 and T-55-L-714 variants and includes Aviation Unit and Intermediate Maintenance Repair Parts and Special Tools Lists.\u003c\/p\u003e\u003ch3\u003eManuals Included\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eT-55-L-714 Series\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-714 — TM-1-2840-252-23-1\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-714 — TM-1-2840-252-23-2\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-714 — TM-1-2840-252-23-3\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-714 — TM-1-2840-252-23P\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eT-55-L-712 Series\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-712 — TM55-2840-254-23-2\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-712 — TM55-2840-254-23-3\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-712 — TM55-2840-254-23-4\u003c\/li\u003e\n\u003cli\u003eAviation Unit and Intermediate Maintenance Repair Parts and Special Tools List — Turbine Aircraft Engines Model T-55-L-712 — TM-1-2840-254-23P\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAbout the Lycoming T-55 Engine\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eLycoming T-55\u003c\/strong\u003e is a free-turbine turboshaft engine developed by the Lycoming Turbine Engine Division (Stratford, CT) — now Honeywell Aerospace. First run in 1955 and qualified for flight in 1961, it was designed as a scaled-up evolution of the Lycoming T53 and has powered heavy-lift rotorcraft in continuous military service for over six decades.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrimary aircraft applications include:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBoeing CH-47 Chinook (all variants, including F\/G models)\u003c\/li\u003e\n\u003cli\u003eMH-47E\/G Special Operations\u003c\/li\u003e\n\u003cli\u003eBell 309 KingCobra\u003c\/li\u003e\n\u003cli\u003eNorth American YAT-28E Trojan\u003c\/li\u003e\n\u003cli\u003eCurtiss-Wright X-19\u003c\/li\u003e\n\u003cli\u003eBell 214A (civilian)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine type:\u003c\/strong\u003e Turboshaft (free-turbine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor:\u003c\/strong\u003e 7-stage axial-flow + 1-stage centrifugal-flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurbine:\u003c\/strong\u003e 2-stage gas producer + 2-stage power turbine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 1,600 shp (initial T55-L-5) to 5,000+ shp (T55-GA-714C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression ratio:\u003c\/strong\u003e ~9.32:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~560 lbs (early) to ~830 lbs (later variants)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Jet A-1 \/ JP-4 \/ JP-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotable features:\u003c\/strong\u003e Reverse flow combustor, split-shaft design, integral oil tank (later models)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Variants\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT55-L-5:\u003c\/strong\u003e 1,870 shp — 1961 production entry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT55-L-7\/L-7C:\u003c\/strong\u003e 2,850 shp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT55-L-11A:\u003c\/strong\u003e 3,750 shp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT55-L-714A\/C:\u003c\/strong\u003e 5,000+ shp — improved reliability and fuel consumption\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOperational History\u003c\/h3\u003e\u003cp\u003eThe T-55 has been the backbone of U.S. Army heavy-lift helicopter operations since the Vietnam War, serving through the Gulf War and all subsequent major conflicts. Today, the engine remains in active military service powering CH-47F\/G and MH-47G Chinooks, with continued modernization managed through the \u003cstrong\u003eT55 Center of Excellence\u003c\/strong\u003e. The current Type Certificate holder is \u003cstrong\u003eHoneywell Aerospace\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eFormat \u0026amp; Delivery\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e PDF (digital download)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery:\u003c\/strong\u003e Instant download after purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiles:\u003c\/strong\u003e Delivered as a compressed archive (RAR\/ZIP). You will need a free extraction tool such as \u003ca href=\"https:\/\/www.7-zip.org\/\" target=\"_blank\"\u003e7-Zip\u003c\/a\u003e (Windows), \u003ca href=\"https:\/\/www.win-rar.com\/\" target=\"_blank\"\u003eWinRAR\u003c\/a\u003e (Windows), or \u003ca href=\"https:\/\/theunarchiver.com\/\" target=\"_blank\"\u003eThe Unarchiver\u003c\/a\u003e (Mac) to extract the files before opening the PDFs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cblockquote\u003e\n\u003ch4\u003eExport \u0026amp; Compliance Notice\u003c\/h4\u003e\n\u003cp\u003eThese materials consist of historical U.S. military technical publications spanning 1941 to 1959 (TM series), provided for educational, research, and reference purposes only.\u003c\/p\u003e\n\u003cp\u003eEach document has been reviewed for obvious restrictions and does not display classification markings, export control notices, or distribution limitations on the cover or within the document body.\u003c\/p\u003e\n\u003cp\u003eThe publications are sourced from publicly available repositories, including the Defense Technical Information Center (DTIC) and Internet Archive, and are offered in consolidated form for the convenience of researchers, historians, restorers, and aviation enthusiasts.\u003c\/p\u003e\n\u003cp\u003eThese materials are not intended for current operational, certification, or repair use, nor for the manufacture or modification of any aircraft or systems.\u003c\/p\u003e\n\u003cp\u003eNo ITAR-controlled or EAR-restricted material is knowingly included.\u003c\/p\u003e\n\u003cp\u003eTo the best of our knowledge, the materials do not contain currently classified information or content subject to active export restrictions. However, no representation or warranty is made regarding export classification status.\u003c\/p\u003e\n\u003cp\u003eBy completing this purchase, you agree to comply with all applicable laws and regulations, including any export or import requirements in your country.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":52917920956763,"sku":null,"price":39.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/lycoming-t-55-lb4-banner-2.png?v=1777975727","url":"https:\/\/onlineaviationlibrary.com\/products\/lycoming-t-55-aircraft-engines-manuals-collection-download","provider":"Online Aviation Library","version":"1.0","type":"link"}