Aircraft/Engine/Propeller/Accessory Manufacturers Abbreviations
| Abbreviation | Manufacturer |
| Abbeman | Abbeman |
| Aeronca | Aeronca Aircraft Corp |
| Aircool | Aircooled Motors Corp (Franklin) |
| All American Target | All American Target |
| Am Prop | American Propeller and Mfg Co |
| BAC (Boeing preferred) | Boeing Aircraft Co |
| Beechcraft | Beechcraft |
| Bell | Bell Aircraft Corp |
| Bellanca | Bellanca |
| Boeing | Boeing Aircraft Co |
| Brewster | Brewster |
| Budd | Edward G. Budd |
| Buschmann & Associates | Buschmann & Associates |
| CAC | Consolidated Aircraft Corp |
| Cessna | Cessna Aircraft Co |
| Chase | Chase Aircraft Co |
| Christopher | Christopher Aircraft Co |
| Cornelius | Cornelius Aircraft Co |
| Culver | Culver Aircraft Corp |
| Curtiss | Curtiss |
| CVAC | Consolidated Vultee Aircraft |
| CW | Curtiss-Wright |
| DAC | Douglas Aircraft Co |
| Dayton Wright | Dayton Wright Propeller |
| Dewoitine | Dewoitine |
| Dosk Aircraft Co | Dosk Aircraft Co |
| ECA | East Coast Inc |
| EDAC | Engineering Division, Air Corps |
| EDAS | Engineering Division, Air Service |
| Edo | Edo Aircraft Corp |
| EngDiv | Engineering Division |
| ERCO | Engineering and Research Corp |
| F. Flader | F. Flader |
| FAC | Fairchild Aircraft Co |
| FAD | Fairchild Aviation Division |
| Fisher | Fisher Body |
| Fleetwings | Fleetwings Inc |
| Flottrop | Flottrop Manufacturing Co |
| G&A | G & A Aircraft Inc |
| GAC | Goodyear Aircraft |
| GE | General Electric |
| General | General Aircraft Corp |
| GLM | Glenn L. Martin |
| Globe | Globe Corp |
| GMC | General Motors Corp |
| Ham Std | Hamilton-Standard |
| Hamilton | Hamilton Aero Mfg Co |
| Hartzell | Hartzell Walnut Propeller Co |
| Higgins | Higgins |
| Hughes | Hughes Aircraft Co |
| Interstate | Interstate Aircraft Co |
| JW Stone | JW Stone Propeller Co |
| Kellett | Kellett Aircraft Corp |
| Kellogg | W. W. Kellogg Co |
| Kroaliter-Doak | Kroaliter-Doak |
| LG | Ludington-Griswold Inc |
| LK | Laister_Kauffman Aircraft Co |
| Lockheed | Lockheed Aircraft Corp |
| LWF | Lowe, Willard & Fowler |
| M&R Inc | Management and Research, Inc |
| Maddox | Maddox Table Co |
| Marquardt Helicopter | Marquardt Helicopter |
| Martin | Glenn L. Martin |
| MCD | McDonnell Aircraft Co |
| McDonnell | McDonnell Aircraft Co |
| McDonnell Helicopter | McDonnell Helicopter |
| MDAC | Materiel Division, Air Corps, Wright Field, etc. |
| NAA | North American Aviation |
| Noorduyn | Noorduyn Aviation Limited |
| Northrop | Northrop Aircraft Inc |
| P&W | Pratt & Whitney |
| Packard | Packard Motor Car Co |
| Piper | Piper |
| Platt-LePage | Platt-LePage Aircraft Co |
| PS&B | Pittsburgh Screw & Bolt Corp |
| PV | P.V. Engineering Forum |
| RAC | Republic Aviation Corp |
| Radioplane | Radioplane Co |
| Rand-Douglas | Rand-Douglas |
| Ryan | Ryan |
| Sikorsky | Sikorsky |
| Smith | Smith Engineering Co |
| Std Steel | Standard Steel Propeller Co |
| Steel P&E | Steel Products & Engineering Co |
| Stinson | Stinson Aircraft |
| Stout | Stout |
| US Aero | US Aero Propeller Co |
| Vega | Vega |
| Vought | Vought |
| VS | Vought-Sikorsky |
| Vultee | Vultee Aircraft |
| WAC | Wright Aeronautical Corp (pre-1929) |
| Waco | Waco Aircraft Corp |
| WAD | Wright Aeronautical Division of CW |
| Westinghouse | Westinghouse Electric & Mfg co |
| WOM | Willys-Overland Motors |
| Wright | Wright Aeronautical Division of CW |
| Wright-Martin | Wright-Martin |
Security Classification Abbreviations
| Abbreviation | Classification |
| C | Confidential |
| R | Restricted |
| S | Secret |
| U | Unclassified |
Other Abbreviation
| Abbreviation | Full Text |
| # | Number |
| AAFTR | Army Air Forces Technical Report |
| AC | Air Corps Acquisition Number |
| CN | Construction Number |
| Co | Company |
| Corp | Corporation |
| corres | correspondence |
| CS | Constant Speed (Propeller) |
| DN | Design/Drawing Number |
| Dsn | Design Number |
| dwg(s) | drawing(s) |
| GFE | Government Furnished Equipment |
| IOM | Inter-Office Memorandum |
| memo | memorandum |
| Mfd | Manufactured |
| Mfg | Manufacturing |
| Mfr | Manufacturer |
| MN | Model Number |
| PN | Part Number |
| PU | Power Unit (Curtiss Electric Prop) |
| Rep | Representative |
| rpt(s) | report(s) |
| SN | Serial Number |
| str | service test report |
| ur(s) | unsatisfactory report(s) |
| w | with |
| wo | without |