A structured digital archive of General Electric CJ805 turbojet and turbofan engine documentation, covering the full variant range from the baseline -3 turbojet to the pioneering -23 aft-fan turbofan. This collection brings together maintenance manuals, illustrated parts breakdowns, training manuals, and operating instructions into a single, organized reference resource for historians, restorers, and aviation researchers.

Definitive Collection with Free Lifetime Updates: This is a living collection that we continuously expand and refine. As we acquire additional CJ805 documentation, technical bulletins, or variant-specific materials, we update this collection and provide free lifetime updates to all purchasers. Your one-time purchase guarantees access to all future additions and improvements to this collection.

Historical Note

The General Electric CJ805 series represents GE's entry into the civil aviation market, adapting military supersonic technology for commercial airliners. Introduced in 1956 and developed by General Electric Aircraft Engines (now GE Aerospace), the CJ805 evolved directly from the J79 supersonic military turbojet — the same powerplant used in the F-104 Starfighter and B-58 Hustler. This lineage gave the CJ805 a technically advanced foundation for its era, including variable stator vanes to prevent compressor stalls.

The engine powered two of Convair's early jetliners: the Convair 880 (turbojet variants) and the Convair 990 Coronado (turbofan variants). Approximately 102 aircraft were produced — 65 Convair 880s and 37 Convair 990s — each fitted with four engines plus spares, making the total production run limited but historically significant. The CJ805-23 turbofan variant holds a particular distinction: it was the first U.S. turbofan engine to enter airline service, featuring a unique free-floating single-stage aft fan stage that distinguished it from contemporary designs. Production ran from the late 1950s to 1962. The last operational Convair 880/990 aircraft were retired or scrapped by the late 1990s and early 2000s; surviving examples are preserved in museum collections including the National Air and Space Museum.

Manuals Included in This Collection

• General Electric CJ805-3 Aircraft Turbo Jet Engine Maintenance Manual — GEI 44526, 1960
• General Electric CJ805-3 & 3B Aircraft Turbo Jet Engine Maintenance Manual — GEI 44526, 1960
• General Electric CJ805-3 & 3B Aircraft Turbo Jet Engine Training Manual — GEI 44527, 1960
• General Electric CJ805-3B Aircraft Turbo Jet Engine Operating Instructions Manual — GEI 67849, 1963
• General Electric CJ805-3 & 3A Aircraft Jet Engine Illustrated Parts Breakdown Manual — GEI 67801, 1965
• General Electric CJ805-23 & 23B Aircraft Turbo Jet Engine Maintenance Manual — GEI 67837, 1961/1976

Six documents spanning both the -3 turbojet and -23 aft-fan turbofan variants, covering the period from 1960 to 1976 and encompassing maintenance, training, parts, and operational procedures.

Engineering Norms and Standards

The CJ805 was designed and certified under mid-20th century U.S. civil and military aviation engineering standards. The engine's architecture — a 17-stage axial compressor, cannular combustor, and 3-stage main turbine — reflected the state of the art in high-performance jet design derived from the J79 program. Variable stator vane technology, incorporated to manage compressor stability across the operating envelope, was an advanced feature for commercial engines of the period. The -23 turbofan's aft-fan configuration represented a novel engineering approach to improving propulsive efficiency without a full engine redesign. The Type Certificate (TCDS 1E5) is held by General Electric Company; associated Airworthiness Directives remain on file with the FAA, though the engine is no longer in active service.

Format and Delivery

Instant digital download. All documents are provided as high-resolution PDFs, optimized for screen reading and print. Compatible with all standard PDF readers on desktop, tablet, and mobile. Files are organized by variant and document type for straightforward navigation.

Disclaimer: This collection is provided for historical reference and research purposes only. These are period documents; always consult current regulatory authorities and the Type Certificate holder for any airworthiness or operational requirements. No guarantee is made as to the accuracy or completeness of historical documentation. All trade names and designations remain the property of their respective owners. This digital compilation, structure, indexing and presentation are © Sicuro Publishing.