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Weatherly Aviation W620 / W620TP

weat620b
W620B

 

Built in Hollister, California and first built and certified in 1979 (TC A26WE). The 620, the first of which, N9245W, first flew in 1979 and was powered by the 450-hp R-985. The next aircraft, N9259W, was fitted with a PT6A-11AG. One similar aircraft was manufactured in 1960 but Weatherly re­mained faithful to the radial.
 
Production waned in the mid-eighties but with the introduction of the model 620A sales picked up again. The 620A wingspan was further extended another five feet to 40 ft 8 in (the wing is now 277 sq.ft) with longer ailerons and a new wingtip design but still retaining the vanes. The 620A also featured a new tail. The empty weight of the 620A is 2,840 lbs and the maximum all-up weight is 5,900 lbs, the hopper capacity being 335 US gallons.
 
In 1991 the 620A was upgraded to the 620B with major improvements to the cockpit and the addition of two auxiliary fuel tanks providing extra range on ferry flights. Put into production in 1992, this has by far been the most popular model with over one hundred been built and sales not only in the United States but Canada, Central and South America and Australia.
 
The 620B was then offered with a turbine, this time an Allied Signal TPE331-1, which Weatherly Aviation market as the 620BTG.

 

W620
Engine: 1 x P&W R-985, 450 hp
TBO: 1000 hrs
Prop: Hartzell, 3 blade, constant speed 95.5 in
Seats: 1
Length: 27.2 ft
Height: 8.1 ft
Wingspan: 41 ft (with wingtip vanes 47'0")
Wing area: 264 sq.ft
Wing aspect ratio: 6.1
Max take off wt: 5600 lbs
Standard empty wt: 2760 lbs
Max useful load: 2840 lbs
Max landing wt: 4000 lbs
Wing loading: 21.2 lbs/sq.ft
Power loading: 12.4 lbs/hp
Max useable fuel: 390 lbs
Hopper capacity: 335 USG
Max climb rate: 700 fpm
Service ceiling; 15,000 ft
Max speed: 130 kts
Working speed: 78-100 kts
Stall speed flaps down: 57 kts
Turbulent air penetration speed: 122 kts
Fixed tail wheel undercarriage

 

W620A

W620B

W620TP

Engine: 1 x P&W PT6-11AG, 500 hp turboprop
TBO: 3500 hrs
Prop: Hartzell 3 blade constant speed 96 in
Seats: 1
Length: 30.5 ft
Height: 8.3 ft
Wingspan: 41 ft
Wing area: 264 sq.ft
Wing aspect ratio: 6.1
Max take off wt: 5600 lbs
Standard empty wt: 2700 lbs
Max useful load: 2900 lbs
Max landing wt: 4000 lbs
Wing loading: 21.2 lbs/sq.ft
Power loading: 11.2 lbs/hp
Hopper capacity: 340 USG
Service ceiling; 15,000 ft
Max speed: 153 kts
Working speed: 78-122 kts
Stall speed flaps down: 57 kts
Turbulent air penetration speed: 122 kts
Fixed tail wheel undercarriage

 

 


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