Parts Department

Johnston Aircraft Service maintains one of the largest inventories of agricultural and general aviation aircraft parts in the western United States. We stock thousands of new, overhauled, and hard-to-find components for Air Tractor, Thrush, Cessna, Piper, Lycoming, Continental, and many other manufacturers. If we don't have it on the shelf, our extensive nationwide parts locating network allows us to source even the most difficult components quickly.

With over 35 years of combined experience, our knowledgeable parts specialists are committed to helping you minimize downtime and keep your aircraft working. Se Habla Español.

We stock replacement parts and assemblies for:

• Thrush 
• Ag Cat 
• Cessna Agricultural Aircraft 
• Cessna Single Engine 
• Piper Brave 
• Piper Pawnee 
• Piper Comanche 
• Dromader 

Available components include:

• Flight controls 
• Landing gear 
• Wings 
• Tail assemblies 
• Windshields & windows 
• Fuel cells 
• Wing spar kits 
• Door seals 
• Gas caps 
• Fairings 
• Wingtips 
• Structural hardware

We supply new, overhauled, exchange, and replacement components for:

• Factory Engines 
• JAS Overhauled Engines 
• Cylinders 
• Fuel Systems 
• Accessories 
• Engine Parts 

• Factory Engines 
• JAS Quality Overhauls 
• ULTRA Overhauls 
• Cylinders 
• Engine Parts 

We also carry:

• Magnetos 
• Carburetors 
• Alternators 
• Starters 
• Ignition Harnesses 
• Exhaust Systems 
• Shock Mounts 
• Fuel Pumps 
• Vacuum Pumps 
• Voltage Regulators 
• Spark Plugs 
• Oil Filters

 Authorized source for:

• Hartzell Top Prop 
• Hartzell STC Conversions 
• Piper Brave Propellers 
• Piper Comanche Propellers 
• Piper Pawnee Propellers 
• Thrush Propellers 
• Cessna Propellers 
• Spinners 
• Propeller Parts

 We carry a complete selection of aerial application equipment including:

• Spray Pumps 
• Stainless Spray Systems 
• Spray Valves 
• Spray Booms 
• Spreaders 
• Adjustable Fans 
• Strainers 
• Loader Valves 
• Quick Disconnect Fittings 
• Dry Break Couplers 
• Spray Nozzles 
• Check Valves 
• Flow Meters 
• GPS Guidance Systems 
• Automatic Flagman Equipment 

Manufacturers include Agrinautics, Transland, TeeJet, CP Products, Weath-Aero, Satloc, AgNav, Arrowprop, and others.

 Available products include:

• Alternators 
• Starters 
• Voltage Regulators 
• Magnetos 
• Ignition Harnesses 
• Igniters 
• Batteries 
• Aircraft Lighting 
• Wiring Components 

Featuring brands such as:

• Sky-Tec 
• Skytronics 
• Prestolite 
• Bendix 
• Champion 
• Concorde 
• Gill 
• Whelen 
• General Electric

We stock:

• Brake Discs 
• Brake Linings 
• Brake Assemblies 
• Tailwheel Assemblies 
• Scott Tailwheels 
• Cleveland Brakes 
• Rapco Components 
• Tires & Tubes 
• Goodyear 
• McCreary

  Our inventory includes thousands of aviation hardware items:

• AN/MS Hardware 
• NAS Hardware 
• Bolts 
• Nuts 
• Washers 
• Rivets 
• Screws 
• Clamps 
• Fittings 
• O-Rings 
• Bearings 
• Tubing 
• Aluminum 
• Chrome-Moly Steel

  We carry complete finishing systems including:

• Aircraft Paint 
• Primers 
• Fabric Systems 
• Dope 
• Thinners 
• Solvents 
• Corrosion Protection 
• Lubricants 
• Cleaners & Polish 

Manufacturers include Poly-Fiber, PPG, Randolph, Certified Coatings, Dupont, Tempo, and Aeroshell.

 Additional products include:

• Cabin Covers 
• Engine Covers 
• Wing Covers 
• Sun Shades 
• Pre-Heaters 
• Cowl Plugs 
• Air Conditioning Systems 
• Digital Tachometers 
• GPS Equipment 
• EGT/CHT Monitors 
• Vortex Generators