{"product_id":"learjet-25-manuals-collection","title":"Learjet 25 — Manuals Collection","description":"\u003ch3\u003eLearjet 25 — Primary-Source Technical Documentation Archive\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eLearjet 25\u003c\/strong\u003e is the stretched-fuselage evolution of the Learjet 24, certified under \u003cstrong\u003eFAR Part 25\u003c\/strong\u003e airworthiness standards and produced across multiple sub-variants — the 25, 25B, 25C, 25D, and 25F — spanning production from 1967 through the early 1980s. Powered by twin rear-mounted \u003cstrong\u003eGeneral Electric CJ610-6 or CJ610-8A turbojets\u003c\/strong\u003e delivering 2,850 lbf per engine, the Learjet 25 pushed range and payload further while retaining the razor-sharp handling of its predecessors. The \u003cstrong\u003eCentury III wing modification\u003c\/strong\u003e on the 25D re-contoured the leading edge, dramatically improving high-altitude cruise efficiency, reducing stall vulnerability, and shortening landing runway requirements. Celebrated as a true pilot's airplane, the Learjet 25 also served as the platform for the Calspan Variable Stability System (VSS) research aircraft — one of the most important flight dynamics research tools in aviation history. This collection assembles the most comprehensive primary-source factory documentation available for the entire Learjet 25 family.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat's Included — Document Manifest\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. Learjet 25 Service Manual (SM-95)\u003c\/strong\u003e\u003cbr\u003ePublished: May 1969 · Last change: February 14, 2005\u003cbr\u003eThe original factory service manual for the Learjet 25 series. Covers all systems, rigging, servicing procedures, spoiler deployment rules, fuel imbalance limits (600 lbs cross-feed \/ 800 lbs wingtip landing), and CJ610 engine integration. Includes stall warning stick-shaker and dual yaw damper system requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Learjet 25 Series Illustrated Parts Catalog (IPB-95)\u003c\/strong\u003e\u003cbr\u003ePublished: October 22, 1999 · Revision 1 dated August 9, 2000\u003cbr\u003eFull illustrated breakdown of all Learjet 25 series airframe assemblies, sub-assemblies, and line-replaceable units. Essential for parts identification, sourcing, and restoration across the complete 25 family production run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Learjet 25B\/C\/D\/F Maintenance Manual (MM-98)\u003c\/strong\u003e\u003cbr\u003ePublished: December 2, 1977 · Revision No. 45, February 14, 2005\u003cbr\u003eThe definitive factory maintenance manual for the late-model 25B, 25C, 25D, and 25F variants. Covers Phase A–D inspection intervals (300 \/ 600 \/ 1,200 \/ 2,400 flight hours), structural alert compliance, and Gates Learjet Door Modification Kit AMK 78-2 integration terminating recurring AD 77-19-02 inspection requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Learjet 25B\/C\/D\/F Wiring Manual (WM-98)\u003c\/strong\u003e\u003cbr\u003ePublished: December 2, 1977 · Revision No. 10, February 14, 2005\u003cbr\u003eFactory wiring manual covering the complete electrical system architecture for the 25B\/C\/D\/F variants. Includes all circuit diagrams, wire routing, connector data, and avionics integration schematics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Learjet 25B\/C\/D\/F — Service Bulletins, Service Newsletters \u0026amp; ADs\u003c\/strong\u003e\u003cbr\u003eBombardier Aerospace · Covers Learjet 23\/24\/25 series\u003cbr\u003eA comprehensive compilation of Service Bulletins (SB), Service Newsletters, Special Spares Kits, Airplane Modification Kits, Field Change Notices, Service Information Letters, Advisory Bulletins\/Wires, and Airworthiness Directives (ADs). Includes critical structural alert bulletins such as AD 77-19-02 (main entryway support pins and structural retention bolt fatigue inspection).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Learjet 20\/30 Series Structural Repair Manual (SRM-4)\u003c\/strong\u003e\u003cbr\u003ePublished: May 15, 1992 · Revised: July 10, 1998 (Rev. No. 4)\u003cbr\u003eStructural repair data, allowable damage limits, and repair procedures for the Learjet 20 and 30 series family — the direct structural lineage shared by the Learjet 25. Addresses primary spar caps, wing attachments, and fuselage skin fatigue zones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. Learjet Mark II Service Manual\u003c\/strong\u003e\u003cbr\u003eGates Learjet Corporation\u003cbr\u003eFactory service manual for the Learjet Mark II variant — the transitional designation bridging the early 25 series toward the refined Century III configuration. A rare and historically significant document covering the intermediate production block.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. Learjet Mark II Illustrated Parts Catalog\u003c\/strong\u003e\u003cbr\u003eGates Learjet Corporation\u003cbr\u003eIllustrated parts breakdown for the Learjet Mark II variant. Complements the Mark II Service Manual for complete parts identification and sourcing coverage of this transitional production series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9. Learjet 24\/25 Series — Dimensions, Areas, Structures \u0026amp; Doors\u003c\/strong\u003e\u003cbr\u003eFactory reference document covering airframe dimensional data, structural area definitions, and door geometry for the Learjet 24 and 25 series. Includes front-view and side-view engineering line drawings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10. Bombardier Aerospace — Learjet Spare Parts Price Catalog\u003c\/strong\u003e\u003cbr\u003ePublished: April 2004 · Covers Learjet Models 23, 24, 25, 28, 31, 35, 36, 40, 45, 55 \u0026amp; 60\u003cbr\u003eBombardier Customer Support official spare parts pricing reference. Invaluable for restoration budgeting, parts valuation research, and historical cost documentation across the full Learjet family.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eAircraft Technical Profile\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAerodynamics \u0026amp; Wing\u003c\/strong\u003e\u003cbr\u003eStretched fuselage development of the Learjet 24. Low-aspect-ratio straight wing with fixed wingtip fuel tanks and T-tail assembly. Physical spoilers for roll assistance and aerodynamic braking — prohibited with flaps extended and restricted past Vmo\/Mmo. \u003cstrong\u003eCentury III mod (25D)\u003c\/strong\u003e: re-contoured\/re-cambered leading edge improving cruise efficiency, stall margins, and landing field length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePowerplant\u003c\/strong\u003e\u003cbr\u003eTwin \u003cstrong\u003eGeneral Electric CJ610-6 \/ CJ610-8A\u003c\/strong\u003e rear pylon-mounted turbojets · 2,850 lbf (13.1 kN) per engine · 5,700 lbf combined. Fuel burn baseline: Gross Weight × 0.1 (+500 lbs first hour). Max cross-feed imbalance: 600 lbs. Max wingtip tank landing imbalance: 800 lbs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHandling \u0026amp; Stability\u003c\/strong\u003e\u003cbr\u003eCalspan VSS research platform — one of aviation's most important flight dynamics research aircraft. Razor-sharp pitch sensitivity at rotation (120–138 KIAS) due to short elevator moment arm. Dual yaw dampers and stall warning stick-shaker mandatory for dispatch. Stitched quasi-LPV flight dynamics models developed across full envelope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Takeoff Weight (MTOW)\u003c\/td\u003e\n\u003ctd\u003e15,000 lbs (6,804 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Operating Altitude\u003c\/td\u003e\n\u003ctd\u003eFL450 (FL510 on 25D variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Cruising Speed\u003c\/td\u003e\n\u003ctd\u003e464 knots (545 mph)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Range\u003c\/td\u003e\n\u003ctd\u003e1,500–1,830 nautical miles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial Rate of Climb (sea level)\u003c\/td\u003e\n\u003ctd\u003e6,050–7,850 fpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced Takeoff Distance\u003c\/td\u003e\n\u003ctd\u003e~3,937 ft (1,200 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Landing Field\u003c\/td\u003e\n\u003ctd\u003e~2,600 ft (836 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\u003e⚠️ \u003cstrong\u003eRegulatory Notice:\u003c\/strong\u003e Under FAA 14 CFR § 43.13 and EASA Part-M, any mechanic performing maintenance on an active aircraft must use current, manufacturer-approved revision-controlled data. This archival document does not satisfy that requirement.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eLiving Collections with Free Lifetime Updates — Please review our Disclaimer and Export Notice before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":53620197982555,"sku":null,"price":120.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/learjet-25-overhead-square-banner.png?v=1784445429","url":"https:\/\/onlineaviationlibrary.com\/products\/learjet-25-manuals-collection","provider":"Online Aviation Library","version":"1.0","type":"link"}