Liaison Aircraft

Liaison aircraft was primarily a name used by the armed forces of the United States, and to a degree the United Kingdom, but we will be including pages on helicopters as they were initially serving alongside the Liaison aircraft and other similar aircraft used by other nations.

Pre-WWII (Between the Wars) Aircraft

Douglas O-49

WWII Liaison Aircraft

United States

Stinson L-1 “Vigilant” – blog posts

Taylorcraft L-2 – 

Aeronca L-3 / O-58 “Defender” / “Grasshopper” – 

Piper L-4 “Cub” or “Grasshopper” – blog posts

Stinson L-5 “Sentinel” – 

Interstate L-6 – 

Sikorsky R-4 (Helicopter) – 

United Kingdom

Taylorcraft Auster



Fieseler Fi 156 Storch


Post WWII Liaison Aircraft

United States

Cessna L-19/O-1 “Bird Dog”

Modern “relatives”