STC upgrade Flight manuals, continued airworthiness and service instructions.

Our expertise is listening to the customer and applying our know-how. We perform maintenance, STC upgrades and modifications on single engine Cessna aircraft. Maintenance MNYR085K PQ3524CE Certified Repair Station FAA-PMA Our Legacy Mike Kelley started doing aircraft maintenance in 1977 in a hangar on Wellington’s municipal airport, hanging out his shingle as Air Plains Services , a nod to both the Great Plains of southcentral Kansas and the region’s reputation for aviation. Just a few miles north is Wichita, home to aviation legends Clyde Cessna, Walter Beech and Lloyd Stearman and known today as the Air Capital of the World. It wasn’t long, though, before Kelley and his wife, Carolyn, turned a passion for flying and for innovation into an industry leader as an airplane transformer, turning legacy Cessna pistons into power singles with STCs for Extreme Performance engine upgrades. Forty-five years later, the company still ranks as the leader in engine upgrade STCs and has added a wide range of avionics upgrades, propeller STCs, PMA parts, specialty manufacturing, interiors, and, of course, full aircraft maintenance. CONTACT US Avionics Installation Most customers chose to upgrade their avionics while they are in our shop. We have the capability to design and fabricate all of our aircraft panels in-house. Air Plains can perform 24 month altimeter and transponder certification per FAR 91.411 and 91.413. We can provide VFR and IFR Certifications. Part 145 Repair Station Our expertise is listening to the customer and applying our know-how. We perform maintenance, STC upgrades and modifications on single engine Cessna aircraft. Unlike traditional shops, we understand the importance of the small details and continual airworthiness. Custom Fabrication Besides producing parts for our STCs under our FAA-PMA Quality Control, we are able to help with Owner/Operator produced parts under FAR 21.303(b)2 and to meet requirements for the numerous items not found via the OEM Aircraft Upgrades Customers that choose to have an engine installation at our facilities take advantage of other upgrades that we offer to create their ultimate flying machine. Here to serve you We strive to provide great service and keep the customer informed during maintenance. We provide General Aircraft Maintenance including Annual and 100 Hour Inspections. Preventive Maintenance Engine upgrades is our business and we take it seriously. Preventive maintenance helps us keep your aircraft on tip- top shape and minimize unwanted surprises. Open Line of communication Estimates for each task Inspections and repairs to exceed expectations Design and fabrication of custom parts

Performance upgrade for Cessna 182 RG to 260HP. Replace the single housed magneto and add fuel injection. Cessna R182 260HP 158 ktas Cruise Speed 1,340 fpm Climb Rate 760 ft. Take-Off Distance 24,000 ft. Service Ceiling 2200 hrs TBO 8% Cruise Speed 23% Climb Rate -21% Take-Off Roll 27% Service Ceiling 26% TBO Performance Increase Powerplant Are you ready for fuel injection? In this STC we offer a factory new IO-540-AF1A5 engine capable of producing 260HP. This upgrade also solves the issue of the single housed magneto that is on your old engine. Powerplant IO-540-AF1A5 Horsepower 260 HP Max. RPM 2700 RPM TBO 2200 HRS Fuel Consumption 75% Power 12-14 GPH Fuel Pump McCauley three blade propeller Polished spinner assembly Engine isolator mounts with bolts Manifold pressure/fuel flow gauge Throttle mixture cable assemblies All new fuel and oil lines and scat-hoses Baffle mod components New prop governor Placards Hardware, switches and clamp kit STC Authorization, Drawings, and Installation Instructions Complete Kit We provide an all-encompassing kit during the upgrade. We like to call it a NEW firewall forward upgrade. Our goal is to provide all the hardware needed to complete the installation with ease. Propeller All propellers have been matched to provide the best combination of airframe and powerplant thru flight test and vibration analysis. We offer several propeller STCs to make each aircraft unique. Diameter: 77.5 -79 Engine: IO-540 Model: McCauley B3D36C431 /80VSA-1 PROPELLER STCs Fuel Injection Anytime an engine generates more than 260 HP we believe that fuel injection provides the needed even fuel distribution on each cylinder to make your flying worry free. You will achieve more predictable CHTs and EGTs and enjoy a smoother ride with reduced vibration. This minimizes premature component failure. Did we mention 0% carburetor ice issues? Dual Magneto Our STC upgrade addresses one of the most critical design challenges of your current engine - The single housed magneto . Some of the issues are cams loosening, impulse couplings failing and magneto movement. All these failure modes result in either a drastic reduction of power or complete failure of the engine. Customer Focus Besides customer satisfaction, one of our main goals is to provide continual airworthiness for your aircraft. We are never done adding more features to the upgrade kit. This is why we fabricate our FAA-PMA parts in-house. We are able to reduce cost significantly to save you more money and provide a product that meets our kit quality standards. We are here to provide future support in your maintenance. Visit our online store to find STC products and FAA-PMA parts. BUY PARTS $314 $940 OEM Vs. Air Plains $1,295 $11,935 $976 $324 $372 $264 Installation We do not sell the "STC Paperwork" only. This is because we believe that the kit parts that we offer with the engine upgrade is the "secret sauce" to a complete, safe and successful installation. We have added several more parts over the 40 years with our continual engineering. Our goal is to make the installer's job as easy as possible. Installation instructions and blueprints safeguard the procedures and standards for installation and maintenance of your new engine... no matter where you choose to have it installed. Did you know that in the state of Kansas there is no sales tax on aircraft maintenance or modification? REQUEST QUOTE Option 1 Install at Air Plains Purchase Complete Kit Engine Provided Installed at our Facilities One flat fee Use our Know-How 2 to 3 weeks Turn Time Option 2 Install at your FBO Purchase Complete Kit Installed by your mechanic Complete Hardware Instructions and Drawings Tech Support provided NEED MORE POWER? We offer a 300HP upgrade on the R182 We offer several products that will enhance your aircraft and add more pleasure to your flying. During an engine upgrade we are able to install other products and accessories efficiently since we start with a clean slate. Accessories Electronic Ignition Engine Monitor Aircraft Interior Engine Pre-Heater Avionics Upgrades Auxiliary Tanks

Air Plains Services , a world leader in general aviation engine and avionics upgrades, announced today it has gained Parts Manufacturing Approval (PMA) from the Federal Aviation Administration for its forward spinner bulkhead  for a number of Cessna 172 models. This component joins the Air Plains parts catalog that includes the Cessna 172 aft spinner bulkhead PMA component and the forward and aft bulkhead assemblies designed specifically for any Cessna 172 with the Air Plains 180hp engine upgrade STC. “We’re always looking to expand our PMA range of parts for Cessna pistons, focusing on high quality and low market cost,” said Katie Church, Air Plains president. “We’ve already gained design and production expertise for this part through the STC process, so expanding the PMA product line to include legacy aircraft models was a logical extension.” The forward PMA spinner bulkhead (Part #APS0550321-4) is approved for Cessna 172 I through P models and for French-made 172 L through P models. Air Plains produces hundreds of PMA and STC parts for a wide variety of Cessna single-engine piston such as components for the air induction system including airboxes, collars, gaskets, adjustable brackets and baffles assemblies, all available at the company’s online store . For information about the new spinner bulkhead or any Air Plains product, call 1-800-752-8481 or +1-620-326-8904 or send an email to sales@airplains.com .

WELLINGTON, KS (July 31, 2025) – Air Plains Services , a world leader in general aviation engine and avionics upgrades, announced today it has gained Parts Manufacturing Approval from the Federal Aviation Administration for the airbox filter seal assembly  for Cessna 172 L and M model aircraft. “The seal assembly is an important part of the cooling system and plays a key role in proper CHT management,” said Katie Church, president of Air Plains. “We specialize in PMA parts for Cessna piston, particularly the cooling system, and when we find ways to improve on an original design, we want to add it our product range.” Mechanics at Air Plains report the absence of the filter seal assembly on many L and M model Cessna 172 Skyhawks coming in for engine upgrades. This can cause a change in designed air flow over the engine, resulting in higher CHTs, as much as 10 to 15 degrees F. “The seal is essential to achieve a greater pressure differential in the engine compartment that strengthens the flow of cooler air over the engine,” Church said. “As we’ve done with other components such as the airbox, we’ve made it better, easy to install and less expensive than other options.” Air Plains opted for a special, lightweight polycarbonate plastic due to its higher temperature resistance, weight and strength. The fiberglass-reinforced silicone material is a single piece seal that provides the best differential pressure between the upper and lower cowl and is designed for easy installation. Air Plains offers a wide range of PMA parts for the induction system including airboxes, collars, gaskets, adjustable brackets and baffles assemblies, all available at the company’s online store . For information about the new airbox filter seal assembly or any Air Plains product, call 1-800-752-8481 or +1-620-326-8904 or send an email to sales@airplains.com . ### Air Plains Services, based in Wellington, Kansas, is a leader in general aviation aircraft upgrades, specializing in high performance engine upgrades  for most Cessna 172, 180 and 182/182RG piston aircraft, avionics systems  and components as well as custom avionics panels, high quality spare parts  and enhanced performance systems, and aircraft modification and maintenance . Air Plains stands apart from most other companies, shipping complete, ready-to-install engine upgrade kits anywhere in the world. Air Plains Services, serving the aerospace industry for more than 40 years, is also the home of the Inpulse ADI modification that allows high compression aircraft engines to use 91 octane auto fuel. Air Plains also owns Petersen Aviation  of Minden, Nebraska, known worldwide for its wide inventory of Supplemental Type Certificates (STCs) that allow general aviation aircraft owners to use less expensive, unleaded auto fuel instead of 100LL avgas.  For more information, visit the Air Plains website at www.airplains.com  and follow the company on the Air Plains Facebook  and Instagram  pages. For information on Air Plains’ Inpulse system for unleaded auto fuel, visit www.flyinpulse.com .

Air Plains Services, a world leader in General Aviation engine and avionics upgrades, announced today it has acquired Petersen Aviation of Minden, Nebraska. Petersen developed Supplemental Type Certificates (STC) that allow general aviation aircraft owners to use less expensive, unleaded auto fuel instead of 100LL avgas. Petersen owned STCs for 48 engine types powering more than 100 airframes around the world, all of which now transfer to Air Plains. “We’ve been working with Todd Petersen for more than 10 years and we’re so excited he has entrusted us to continue his family’s legacy of innovation and customer service through this acquisition,” said Air Plans President Katie Church. “Todd developed our Inpulse anti-detonation injection STC for high-horsepower engines to burn auto fuel so we now offer the full range of auto fuel STCs for the industry.” For the immediate future, Air Plains will continue to sell the STCs through the Petersen website as well as by contacting Air Plains. Contact Air Plains  or order through Petersen’s website .