Helicopters1962 helicopter prototype model by Bell Helicopter
Bell YOH-4

The Bell YOH-4 (originally YHO-4) is a single-engine, single-rotor light helicopter, developed for the United States Army's Light Observation Helicopter program. While the YOH-4A was unsuccessful in the original LOH competition, Bell redesigned it as the sleek Bell 206A JetRanger for the commercial market, and enjoyed instant and lasting success. In 1967, the Army reopened the LOH competition, and the 206A-based OH-58 Kiowa was selected.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
- Manufacturer
- Bell Textron
- Category
- Helicopters
- Country of origin
- United States
- First flight
- 1962-12-08
- Length
- 11.79 m
Specifications
- Cruise speed
- 96 kt
- Max speed
- 117 kt
- Range
- 246 nm
- Service ceiling
- 20,000 ft
- Max takeoff weight
- 2,537 lb
- Empty weight
- 1,536 lb
- Powerplant
- Allison T63-A-5
- Engines
- 1
- Seats
- 4
- Length
- 38.7 ft
- Height
- 8.8 ft
- Number built
- 5
Specifications are approximate and may vary by variant. Compiled from Wikipedia (CC BY-SA).
Reference and training only. Specifications vary by variant — consult the manufacturer and the official documents.