WACO Aircraft Company — Factory Drawing & Part Number Master Index · 24,412 Original Engineering Blueprints · Digital Archive

What This Archive Contains

This is the most extensively documented factory drawing archive ever assembled for WACO Aircraft Company — 24,412 original engineering blueprints spanning the complete production history of one of America's most prolific Golden Age aircraft manufacturers, from the earliest WACO 10 biplanes through the WWII-era CG-4A Hadrian combat glider.

At the core of this collection is the original WACO Factory Drawing & Part Number Master Index — the internal engineering ledger used by the Advance Aircraft Co. (Troy, Ohio) to track every drawing ever produced. This index, covering Part No. 1 through approximately 4,080, was transcribed and cross-referenced by hand by WACO's own draughtsmen between 1926 and 1931, with annotations, supersession notes, and revision dates recorded in real time on the shop floor. It is a primary-source document of exceptional rarity.

Aircraft Models Documented

The archive covers 20+ distinct WACO model variants, each documented to component level:

• WACO 10 Series — Models A, B, C, D, G, J (base series, OX-5 engine)
• Straight Wing variants — AS, BS, BSO, CS, CSO, DS, DSO, GX, GXE, HS, HSO, PS, PSO, QS, QSO
• Tapered Wing variants — AT, CT, CTO, HT, HTO
• JY / JYM Series — documented to individual tube level
• CRG Series — Wright R-760 geared 1.58:1, NACA M-18 wing profile
• GR Series — Wright R-760-a
• CSO Pursuit — factory fighter variant with complete weapons system documentation
• CSO Seaplane — confirmed three-view drawing
• HSO / HTO — Packard Diesel engine installation (Straight Wing and Tapered Wing)
• CG-4A Hadrian — WWII combat glider, structural and assembly drawings

Engines Documented

Ten distinct powerplants are covered with installation drawings, balance diagrams, and motor mount Part Numbers:

Curtiss OX-5 · Hispano-Suiza "A" · Hispano-Suiza "E2" · Warner · Wright R-760-a · Wright R-760 geared 1.58:1 · Continental · Jacobs · Kinner 190 HP · Packard Diesel (DR-980 — one of the rarest engine installations in American civil aviation history)

Systems Documented — Selected Highlights

Every major aircraft system is covered at the individual component level. The index tracks not just assemblies but every tube, fitting, gusset, blank, and bracket — the complete bill of materials for each model:

Airframe & Structure — Fuselage tube systems (Longerons Top/Bottom, Diagonal Sides, Cross Braces — 6 positions each), Gussets, Bulkheads, Floor Boards, Firewall assemblies, Structural Girders (Cross Girder, Body Girder — all models)

Wings & Flight Surfaces — Upper/Lower wing assemblies L/R, Ribs, Spars, Leading/Trailing Edges, Dural Leading Edge, NACA M-18 profile ribs (CRG), Ailerons with full Bellcrank and Push Tube system, Empennage assemblies

Landing Gear — Vee Assembly L/R (JYM, CRG, ATO/CTO), Oleo Strut, Aerol Strut, Gruss Strut, Tail Wheel Shock Strut System (14 Part No., Waco "O"), Landing Gear Gas Tank (A/B/C — fuel stored within the gear structure)

Powerplant — Motor Bed Tubes, Motor Support Tubes (4 positions), Motor Mounts for all engine types, Cowling systems, Magneto Covers, Air Cleaner System, Spinner assemblies, Inverted Flight Oil Tank (CTO — 6 Part No.)

Fuel & Oil — Gas Tank systems, Drain Assembly, Needle Valve, Oil Tank variants (OX-5/Hisso A/Hisso E2/BS/JYM), Oil Cooler Fin System — Waco "G" (16 Part No.), Oil Return Lines

Control Systems — Rudder Bar, Front/Rear Control Sticks, Throttle Wire/Rod/Tube, Elevator/Aileron/Rudder Cables, Throttle Lever and Fascia Assembly

Upholstery & Interior — Seat Cushions (all variants), Cockpit Cover, Cockpit Lining, Pioneer Instrument Panel (Group + Assembly), Turtle Deck System AO/BO/CO (8 arches, complete)

Alternate Configurations — Pontoon/Seaplane gear (Hull, Deck, Bulkheads, Keel, Chine, Step, Water Rudder), Float Gear, Ski Assembly (Binding, Tip Bow, Shock Cord, Pedestal)

The CSO Pursuit — Factory Fighter Variant

Among the most significant discoveries in this archive is the complete documentation of the WACO CSO Pursuit — an armed fighter variant developed by Advance Aircraft Co. in 1930. The weapons system alone accounts for 57 dedicated Part Numbers (3916–3999), covering:

5" Bead Gunsight · Gun Mounting Arch System (3 arches, 9 Part No.) · Rear Bomb Rack with Tee Rail · Arming Control Link · Bomb Release Bracket · Gas Tank #1316 revision drawing for machine gun installation · Ammunition Box Assembly (all 8 panel sides documented individually) · Feed Chute System · Shell Chute System (Left/Right assemblies) · Ejector Chutes (Short Lug/Long Lug) · Rear Control Stick (dual controls) · Pioneer Instrument Panel — Pursuit variant

Additionally documented: 1/4-scale side and front view drawings of the CSO Pursuit (Part No. 3124–3125) — factory presentation drawings of exceptional rarity.

Special Technical Documents Included

• 1929 National Air Tour data chart (Part No. 3237) — WACO's internal performance analysis of the National Air Tour, recorded as an official engineering drawing
• Packard Diesel installation drawings — HSO and HTO balance diagrams (Part No. 3747–3749)
• Inverted flight fuel and oil tank installation (Part No. 3753) — confirming factory-supported aerobatic capability
• CSO Seaplane three-view drawing (Part No. 3900)
• BSO three-view drawing (Part No. 3896)
• CRG three-view drawing — Wright R-760 geared 1.58:1 (Part No. 3860)
• HSO Straight Wing and Tapered Wing three-view drawings (Part No. 3709–3710)
• Rigging diagram — Streamline Wires AS/DS (Part No. 3061)
• Gas & Oil System diagram — DSO (Part No. 3062)
• Wire wrapping detail drawing (Part No. 3800)

Five "Ready to Fly" Assembly Sequences

The index documents the complete production sequence — from raw tubes to flight-ready aircraft — for five distinct models: DSO · JYM · GXE · CSO · CRG. Each sequence follows the same progression: Assembly Complete → Covered & Doped → Cowled → Upholstered → Ready to Fly.

File Specifications

• Total drawings: 24,412 engineering blueprints
• Drawing numbers: #4 through #60013
• File formats: High-resolution TIF and PDF
• Delivery: Instant digital download — 2 RAR archive files
• Includes: Original WACO Factory Drawing & Part Number Master Index (Part No. 1–4,080+), SK sketches, engineering tables, technical reports

Download: Extract both RAR files to the same folder using WinRAR, 7-Zip, or The Unarchiver. Begin extraction with Part 1 — the software combines both parts automatically.

Who This Archive Is For

This collection is primary-source documentation intended for: aircraft restorers working on authentic WACO restorations · aviation historians researching American Golden Age and WWII aircraft development · aerospace engineers studying vintage structural design · scale modellers requiring factory-accurate references · museums and educational institutions · collectors of original aviation engineering documentation · researchers studying the evolution of American fighter aircraft design in the 1930s.

⚠️ Regulatory Notice: 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.

This 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.

Living Collections with Free Lifetime Updates — Please review our Disclaimer and Export Notice before purchasing.