A Fleet Built for Success

Weather Modification, Inc., has been modifying and operating aircraft for cloud seeding and atmospheric research operations since 1961. We maintain and operate a fleet of more than 35 twin-engine aircraft in various configurations that meet the needs of every client.

Weather Modification, Inc., uses several models of aircraft in our own operations, although we can adapt our equipment to virtually any type of aircraft for specific customer needs. Weather Modification, Inc., has the following aircraft types in service and available at this time:

Beechcraft King Air C90/A/B/GTi King Air C90GTi Length 35 ft 6 in Height 14 ft 3 in Wing Span 50 ft 3 in Horsepower per Engine 550 shp Maximum Gross Weight 10,485 lbs Typical Empty Weight 6,950 lbs Typical Useful Load 3,010 lbs Typical Useful Load 3,010 lbs Maximum Fuel Capacity 384 US gal Maximum Cruise Speed 270 kts All-Engine Service Ceiling 30,000 ft Single-Engine Service Ceiling 21,500 ft Single-Engine Service Ceiling 21,500 ft All-Engine Rate Of Climb 1,955 ft/min Single-Engine Rate Of Climb 539 ft/min King Air C90 Length 35 ft 6 in Height 14 ft 3 in Wing Span 50 ft 3 in Horsepower per Engine 550 shp Maximum Gross Weight 9,650 lbs Typical Empty Weight 5,765 lbs Typical Useful Load 3,010 lbs Maximum Fuel Capacity 384 US gal Maximum Cruise Speed 225kts All-Engine Service Ceiling 30,000 ft Single-Engine Service Ceiling 15,050 ft All-Engine Rate Of Climb 1,900 ft/min Single-Engine Rate Of Climb 525 ft/min King Air C90A Length 35 ft 6 in Height 14 ft 3 in Wing Span 50 ft 3 in Horsepower per Engine 550 shp Maximum Gross Weight 10,100 lbs Typical Empty Weight 5,765 lbs Typical Useful Load 3,010 lbs Maximum Fuel Capacity 384 US gal Maximum Cruise Speed 240 kts All-Engine Service Ceiling 30,000 ft Single-Engine Service Ceiling 15,600 ft All-Engine Rate Of Climb 2,137 ft/min Single-Engine Rate Of Climb 626 ft/min King Air C90B Length 35 ft 6 in Height 14 ft 3 in Wing Span 50 ft 3 in Horsepower per Engine 550 shp Horsepower per Engine 550 shp Maximum Gross Weight 10,100 lbs Typical Empty Weight 6,702 lbs Typical Useful Load 3,100 lbs Typical Useful Load 3,100 lbs Maximum Fuel Capacity 384 US gal Maximum Cruise Speed 247 kts All-Engine Service Ceiling 30,000 ft Single-Engine Service Ceiling 15,600 ft All-Engine Rate Of Climb 2,137 ft/min Single-Engine Rate Of Climb 626 ft/min B200/B/GT King Air 200 Length 43 ft 10 in Height 14 ft 10 in Wing Span 54 ft 6 in Horsepower per Engine 850 shp Maximum Gross Weight 12,500 lbs Typical Empty Weight 7,315 lbs Typical Useful Load 4,107 lbs Maximum Fuel Capacity 544 US gal Maximum Cruise Speed 289 kts All-Engine Service Ceiling 35,000 ft Single-Engine Service Ceiling 21,900 ft All-Engine Rate Of Climb 2,460 ft/min Single-Engine Rate Of Climb 740 ft/min King Air B200 Length 43 ft 10 in Height 14 ft 10 in Wing Span 54 ft 6 in Horsepower per Engine 850 shp Maximum Gross Weight 12,500 lbs Typical Empty Weight 8,102 lbs Typical Useful Load 4,107 lbs Maximum Fuel Capacity 544 US gal Maximum Cruise Speed 292 kts All-Engine Service Ceiling 35,000 ft Single-Engine Service Ceiling 21,900 ft All-Engine Rate Of Climb 2,460 ft/min Single-Engine Rate Of Climb 740 ft/min King Air B200GT Length 43 ft 10 in Height 14 ft 10 in Wing Span 54 ft 6 in Horsepower per Engine 850 shp Maximum Gross Weight 12,500 lbs Typical Empty Weight 8,520 lbs Typical Useful Load 3,870 lbs Maximum Fuel Capacity 544 US gal Maximum Cruise Speed 308 kts All-Engine Service Ceiling 35,000 ft Single-Engine Service Ceiling 24,200 ft All-Engine Rate Of Climb 2,460 ft/min Single-Engine Rate Of Climb 740 ft/min B350 King Air 350 Length 46 ft 8 in Height 14ft 4 in Wing Span 57 ft 11 in Horsepower per Engine 1,050 shp Maximum Gross Weight 15,000 lbs Typical Empty Weight 12,500 lbs Typical Useful Load 5,574 lbs Maximum Fuel Capacity 539 US gal Maximum Cruise Speed 312 kts All-Engine Service Ceiling 35,000 ft Single-Engine Service Ceiling 21,500 All-Engine Rate Of Climb 2,731 ft/min Single-Engine Rate Of Climb 780 ft/min

Hawker Hawker 400XP Length 48 ft 5 in Height 13 ft 11 in Wing Span 43 ft 6 in Horsepower per Engine 2,965 shp Maximum Gross Weight 16,300 lbs Typical Empty Weight 13,000 lbs Typical Useful Load 5,515 lbs Typical Useful Load 5,515 lbs Maximum Fuel Capacity 733 US gal Maximum Cruise Speed 465 kts All-Engine Service Ceiling 43,465 ft Single-Engine Service Ceiling 20,600 ft All-Engine Rate Of Climb 2,414 ft/min Single-Engine Rate Of Climb 350 ft/min

Bombardier Lear Jet 35A Length 48 ft 8 in Height 12 ft 2 in Wing Span 39 ft 6 in Pounds of Static Thrust per Engine 3,500 lbs Maximum Gross Weight 18,301 lbs Typical Empty Weight 9,154lbs Typical Useful Load 8291 lbs Maximum Fuel Capacity 931 US gal Maximum Cruise Speed 430 kts All-Engine Service Ceiling 41,000 ft Single-Engine Service Ceiling 25,000 ft All-Engine Rate Of Climb 4,340 ft/min Single-Engine Rate Of Climb 1,280 ft/min

Piper Piper Seneca II Piper Seneca II Length 28 ft. 07 in. Height 9 ft. 11 in. Wing Span 38 ft. 11 in. Horsepower per Engine 200 shp Maximum Gross Weight 4,570 lbs Typical Empty Weight 3,200 lbs Typical Useful Load 1,370 lbs Maximum Fuel Capacity 93-123 US gal Maximum Cruise Speed 225 mph All-Engine Service Ceiling 25,000 ft Single-Engine Service Ceiling 14,400 ft All-Engine Rate Of Climb 1,200 ft/min Single-Engine Rate Of Climb 190 ft/min Piper Cheyenne II Piper Cheyenne II Length 34 ft 8 in Height 12 ft 9 in Wing Span 42 ft 8 in Horsepower per Engine 620 shp Maximum Gross Weight 9,000 lbs Typical Empty Weight 5,018 lbs Typical Useful Load 4,032 lbs Maximum Fuel Capacity 374 US gal Maximum Cruise Speed 269 kts All-Engine Service Ceiling 31,600 ft Single-Engine Service Ceiling 14,600 ft All-Engine Rate Of Climb 2,710 ft/min Single-Engine Rate Of Climb 660 ft/min

Cessna Cessna 340A Length 34ft. 04 in. Height 12 ft. 7 in Wing Span 38 ft. 1 in. Horsepower per Engine 310 shp Maximum Gross Weight 6,290 lbs Typical Empty Weight 4,500 lbs Typical Useful Load 1,790 lbs Maximum Fuel Capacity 183-203 US gal Maximum Cruise Speed 281 mph All-Engine Service Ceiling 29,800 ft Single-Engine Service Ceiling 15,800 ft All-Engine Rate Of Climb 1,650 ft/min Single-Engine Rate Of Climb 315 ft/min

Aircraft Modification

If you operate your own aviation fleet, we can provide custom-modified aircraft to match your specific mission requirements - or we can modify your existing aircraft to perform the operations required.

Our talented team of experienced technicians facilitates the entire process - from design to modification to US Federal Aviation Administration (FAA) standards certification. Weather Modification, Inc., can also perform any necessary maintenance required or upgrades requested by the client during the modification process.

Some of the modifications that we currently perform are:

VIP Transport

Photographic Equipment

Remote Sensing

Environmental Monitoring

Telemetry

Atmospheric Chemistry

Cloud Physics Measurements

Air Ambulance

Cloud Seeding

Weather Modification, Inc. has acquired US FAA Supplemental Type Certificate (STC) for select seeding equipment on the following aircraft:

Hawker 400

King Air 350, 200, and C90

The STC ensures that equipment is built and installed to the highest aviation standard for safety and performance.

Aircraft Sales and Leasing

We can provide air and ground staff for a turnkey program

Unparalleled support from our maintenance and flight department assures smooth operation for your project

Support is available 24-hours a day, 7-days a week, around the globe

Let us locate, evaluate, and facilitate the purchase of a suitable aircraft for your needs.