Light Observation Helicopter
| Light Observation Helicopter | |
|---|---|
| YOH-6A Cayuse helicopter on liftoff | |
| General information | |
| Project for | Light Observation Helicopter | 
| Issued by | United States Navy | 
| Service | United States Army | 
| Proposals | Bell YOH-4 Fairchild Hiller YOH-5 Hughes OH-6 Cayuse Bell OH-58 Kiowa (second round) | 
| History | |
| Outcome | Hughes OH-6 Cayuse (first round) Bell OH-58 Kiowa (second round) | 
| Successors | Army Helicopter Improvement Program | 
The Light Observation Helicopter (LOH) program was a United States Army program to evaluate, develop and field a light scout helicopter to replace the Army's aging Bell OH-13 Sioux. It gained impetus with the advent of the Vietnam War, and was aided by advances in helicopter technology, specifically the development of the turboshaft engine.