A digital archival collection of ERCO Ercoupe 415-C construction and engineering drawings, organized around the drawing numbers and nomenclature recorded in the supplied 415-C Construction Drawings index. The indexed material spans aircraft assemblies, structural details, flight controls, undercarriage, engine installation, fuel-system components and cockpit fittings.
Understanding this engineering archive
This collection presents historical factory engineering documentation for technically literate researchers, aviation historians, engineers and museum-restoration reference work. It is not a simplified aircraft-building plan set, an assembly instruction course or an RC/model-aircraft guide.
Surviving archival drawings can have uneven coverage, repeated references and variable legibility. Microfilm-derived material, where present, may retain the limitations of its source. Dimensions, material specifications, revision details and manufacturing instructions are not guaranteed for every component. The drawing index describes the recorded scope; it is not a certification of applicability or a guarantee that every sheet required to manufacture an aircraft survives.
Collection overview and drawing-index guide
The supplied English-language index runs to 18 pages. The following guide highlights named entries and drawing families rather than presenting each index row as a separate, unique drawing.
- General aircraft references: Assembly-Airplane, 415-00002; Three-View, indexed as “Thee-View”, 415-00003; Assembly-Paint, 415-00006.
- Wing and center-section structure: center section, 415-13001; front and rear center-section beams, 415-13002 and 415-13003; wing assembly, 415-14000; outer-panel assemblies, 415-14001 and 415-14002; associated ribs, skins, capstrips, fittings, stiffeners and walkway details.
- Ailerons and tail surfaces: aileron assembly, 415-16001; tail-surfaces assembly, 415-20001; stabilizer, 415-21001; elevator, 415-22001; fin, 415-23001; rudder, 415-24001; associated skins, ribs, hinges, balance and control-horn details.
- Fuselage and engine mounting: fuselage and center section, 415-31001; upper and lower fuselage, 415-31006 and 415-31007; rear fuselage, 415-31160; engine mount, 415-31913; frames, longerons, firewall sections, skins and attachment details.
- Landing gear and brakes: main landing-gear assembly, 415-33167; brake-cylinder assembly, 415-33422; brake-control assembly, 415-33423; oleo-strut assembly, 415-34085; nose-gear assembly, 415-34090; associated legs, axles, links, cylinders and supports.
- Engine installation and cowling: engine installation, 415-40001; top and bottom cowling, 415-40039 and 415-40040; cowling installation, 415-40104; muffler and cabin-heater assembly, 415-40156; exhaust-stack, baffle and related installation details. These are aircraft installation references, not an engine overhaul-manual collection.
- Fuel and associated components: gas-tank assembly, 415-48025; fuel-tanks assembly, 415-48028; tank ribs, bulkheads, baffles, filler necks, caps, gauges, tubes and rear vent lines.
- Instruments and flight controls: instrument-panel assembly, 415-51016; pilot/copilot control wheel, 415-52055; surface-controls installation, 415-52070; control-column, elevator, aileron and rudder-control components, push rods, cables, sprockets, bellcranks and trim details.
- Cockpit, windows and seating: window assemblies, tracks, frames, floorboards, seat structures and belt attachments in the 415-530xx group; seat-bottom assembly, 415-53004, also annotated A-667; seat assembly, 415-53016, also annotated A-668.
- Separately identified related reference: Alon Baggage Compartment, A53334 (340261), listed on the final index page. This is an Alon-labelled item, not evidence of applicability to every ERCO 415-C.
Some identifiers recur under different descriptions, including 415-53052, 415-40047 and 415-52118. These references are retained as documentary distinctions rather than counted as confirmed duplicate files or additional unique drawings. No exhaustive factory-set or unique-sheet total is claimed.
Engineering research value
The collection supports study of how aircraft-level assemblies relate to individual structural parts and mechanical components. Drawing numbers provide a practical route from major assemblies to the fittings, brackets, ribs, skins and control details named in the index. Aircraft performance figures, control-travel settings and handling claims are not specifications established by this index.
A growing archival collection
The collection may expand as further relevant material becomes available. The current scope is defined by the listed archival references, not by a promise that every drawing produced for the type is included.
Format and digital delivery
Digital PDF documentation only; no physical drawings, books or aircraft parts are supplied. Instant digital access is provided through the purchase download service once payment and delivery processing are successful. Files supplied in ZIP or RAR archives must be extracted before use. Use an archive extractor such as 7-Zip or WinRAR on Windows, or The Unarchiver on Mac, then open the extracted PDFs in a compatible reader. Printing and enlargement remain subject to source resolution and legibility.
Regulatory boundary
Historical engineering reference only. This archive is not current approved airworthiness data and does not authorize aircraft construction, maintenance, repair, alteration or return to service. Work on an airworthy aircraft requires applicable current data and the appropriate qualified personnel and approvals.
Legal Notice
This digital compilation, structure, indexing and presentation are © Sicuro Publishing. Rights in individual source documents remain with their respective rights holders. Manufacturer names and designations identify the historical subject matter; no manufacturer endorsement, official distribution status or affiliation is implied.
Export Notice
Access and use remain subject to applicable distribution and export requirements. The historical nature of a document does not itself establish unrestricted distribution rights.