Helicopters1975 prototype attack helicopter model by Bell Helicopter
Bell YAH-63

The Bell YAH-63 (Model 409) was an experimental attack helicopter for the Advanced Attack Helicopter (AAH) competition. The Hughes Model 77/YAH-64, later developed into the AH-64 Apache, was selected over Bell's entry.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
- Manufacturer
- Bell Aircraft Corporation
- Category
- Helicopters
- Country of origin
- United States
- First flight
- 1975-10-01
Specifications
- Max speed
- 170 kt
- Range
- 317 nm
- Service ceiling
- 12,200 ft
- Rate of climb
- 1,620 ft/min
- Max takeoff weight
- 14,750 lb
- Empty weight
- 6,600 lb
- Powerplant
- 2 × General Electric T700 turboshaft engines
- Engines
- 2
- Seats
- 2
- Length
- 44.6 ft
- Height
- 13.4 ft
- Number built
- 3
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.