On Mark Engineering was an American aircraft remanufacturing company established in 1954 at Van Nuys Airport in California. Its most significant products were rebuilding military surplus A-26 Invaders into executive transports—the Marketeer with an unpressurized fuselage and the Marksman with fuselage pressurization. On Mark converted 41 Douglas B-26s into one YB-26K and 40 B-26K Counter-Invaders (later redesignated A-26A) for counterinsurgency missions with the US Air Force. On Mark also undertook conversion work of a Boeing 377 Stratocruiser into the prototype Pregnant Guppy for Aero Spacelines.

Products

• On Mark Executive
• On Mark Marketeer
• On Mark Marksman
• B-26K Counter-Invader
• Aero Spacelines Pregnant Guppy—prototype only

References

• Gunston, Bill (1993). World Encyclopedia of Aircraft Manufacturers. Annapolis: Naval Institute Press.

External links

Wikimedia Commons has media related to On Mark aircraft.

• Marksman by Airscene org uk
• A site on Van Nuys Airport, including On Mark Engineering

This aeronautical company–related article is a stub. You can help Wikipedia by expanding it.

• v
• t
• e