Bell YOH-4

The Bell YOH-4 (originally YHO-4) was 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 reopended the LOH competition and the 206A-based OH-58 Kiowa was selected.

Bell YOH-4 and Hiller YOH-5 were the answers i wanted to hear.1
Originally developed as the Bell YOH-4 for the United States Army's Light Observation Helicopter program, the 206 failed to be selected.2
Originally developed as the Bell YOH-4 for the United States Army's Light Observation Helicopter program, the 206 failed to be selected. Bell redesigned the airframe and successfully marketed the aircraft commercially as the five-place Bell 206A JetRanger.3

Made by Bell Helicopter.

Bell YOH-4 is the predecessor of the Bell 206.

The Bell YOH-4 (originally YHO-4) was a single-engine, single rotor, light helicopter developed for the United States Army's Light Observation Helicopter program.4
Both the YOH-5 and the Bell YOH-4 were judged to be more than able to fulfill the payload, speed, and range requirements set forth in the LOH type speculation.5
Jet Or Prop
prop
Height Alt
2.69 m
Length Alt
11.79 m
Max Takeoff Weight Main
2537.0
Power Alt
186.0
Lists
* List of active United States military aircraft
Range Main
246.0
Max Speed Alt
8100.0
Type Of Prop
Turboshaft
Crew
1
Max Speed Main
117
See Also
* U.S. Helicopter Armament Subsystems
Capacity
2.0
Cruise Speed Main
96
Max Takeoff Weight Alt
1150.0
Ceiling Main
20000.0
Number Built
5
Successor
Bell 206
Cruise Speed Alt
6660.0
Height Main
269.24
Primary user
United States Army
Span Alt
10.13 m
Plane Or Copter?
copter
Engine(prop)
Allison Engine Company
Allison Model 250
Manufacturer
Bell Helicopter
First Flight
8
Origin
United States
National Origin
United States
Span Main
1013.46
Power Main
250.0
Number Of Props
1
Empty Weight Alt
697.0
Variants With Their Own Articles
Bell 206
Length Main
1178.56
Range Alt
16980.0
Similar Aircraft
* Fairchild Hiller YOH-5* OH-6 Cayuse
Related
* Bell 206* OH-58 Kiowa
Empty Weight Main
1536.0
Ceiling Alt
6
100 m
Category
Military helicopters
United States military reconnaissance aircraft 1960-1969

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