Weatherly 620

Weatherly 620
A Weatherly 620B in 1998
Role	Agricultural aircraft
National origin	United States
Manufacturer	Weatherly Aircraft Company
First flight	1979
Number built	155
Developed from	Weatherly 201

The Weatherly 620 is a 1970s American agricultural monoplane designed and built as an improved variant of the Weatherly 201 by the Weatherly Aircraft Company of McClellan, California.^[1]

Design

The Weatherley 620 is an all-metal single-seat low-wing cantilever monoplane with a conventional landing gear with a tailwheel. Examples have been fitted with a Pratt & Whitney R-985 radial engine, and PT6A or TPE331 turboprop engine, driving a three-bladed tractor propeller. In the forward fuselage, the aircraft has a 355 US gallon (1344 litre) hopper that feeds an agricultural dispersal system.^[1]

Variants

Model 620

1979 initial production variant.

Model 620A

1987 production variant with a Pratt & Whitney R-985 radial engine.

Model 620B

1992 production variant with a Pratt & Whitney R-985 radial engine.

Model 620TP

1980 turboprop variant with a Pratt & Whitney PT6A-11AG.

Model 620B-TG

1997 improved turboprop variant to replace the 620TP with a Honeywell TPE331 turboprop.

Specifications (620BTG)

Side view of Weatherly 620B

Data from Jane's All The World's Aircraft 2004-05 ^[1]

General characteristics

• Crew: 1
• Payload: 355 US Gallons (1344litres) hopper
• Length: 29 ft 8 in (9.04 m)
• Wingspan: 46 ft 8 in (14.22 m)
• Height: 9 ft 6 in (2.90 m)
• Wing area: 277 ft² (23.1 m²)
• Empty weight: 3030 lb (1374 kg)
• Max. takeoff weight: 6000 lb (2721 kg)
• Powerplant: 1 × Honeywell TPE331 turboprop, 500 hp (373 kW)

Performance

• Never exceed speed: 153 knots (176 mph, 283 km/h)
• Cruise speed: 122 knots (140 mph, 226 km/h)
• Stall speed: 62 knots (72 mph, 115 km/h)
• Service ceiling: 15000 ft (4572 m)
• Rate of climb: 1400 ft/min (m/s)

References

Notes

Bibliography

External links

Wikimedia Commons has media related to Weatherly 620.

• TYPE CERTIFICATE DATA SHEET NO. A26WE