Ask The Expert!

Categories: Q&A/ Ask the Experts | Posted: February 9, 2012 | Comments Off on Ask The Expert!

Use the comments section to submit your question to the Kings Avionics team today.


Categories: Butler Avionics Headlines | Posted: April 26, 2017 | Comments Off on BUTLER RECEIVES FAA APPROVAL OF LEARJET ACCELEROMETER

OLATHE, KANSAS, April 26, 2017, – Butler National Corporation (OTCQB: BUKS), a leading components manufacturer and service provider for commercial and military aircraft and a recognized provider of management services in the gaming industry, announces Federal Aviation Administration Supplemental Type Certificate issuance and Parts Manufacturing Approval of a new vertical accelerometer for Learjet airplanes.

Incorporating new technologies, Butler National designed, manufactured and obtained Federal Aviation Administration Supplemental Type Certificate (STC) approval of a replacement vertical accelerometer for use by the autopilot on the applicable Learjet Model 31/35/35A/36/36A/C-21A and 55 Series airplanes. The replacement accelerometer is approved for installation under STC number ST02515SE.

Parts obsolescence is a never ending challenge in the airplane business. Many aircraft, like Learjet 20, 30 and 55 series airplanes are flying beyond their 40th year of operation. This makes replacement part acquisition a significant challenge. One Butler National research and development focus is providing new part alternatives to obsolescence issues with cost-effective new replacement parts for legacy airplanes such as Learjets. We manufacture and sell these parts through our subsidiary Butler Avionics, Inc.

Management Comments

“We are pleased to continue offering new components and system upgrades for sale to operators of legacy Learjets. We believe the new replacement vertical accelerometer, the AV-500B Mod A, will offer enhanced reliability and improved performance for the applicable Learjets”, commented Clark D. Stewart, President and CEO.

“We also have an FAA approved STC solution for new replacement rate gyros (RG-227) that have received positive acceptance from legacy Learjet operators.” Commented Mr. Stewart. He added: “We have had numerous requests to assist with technical obsolescence solutions in Learjets, and the replacement vertical accelerometer is another prime example of combining our aviation experience with our technical expertise. These Butler National replacement parts enhance the upgrade experience that we offer operators with our ADS-B(Out) solutions. We are working to provide Learjet customers new parts with new technology. ”

“We stepped up to provide reasonable solutions to keep these aviation ‘workhorses’ operational. We offer noise solutions, avionics solutions (ADS-B(Out) and Garmin GTN navigation upgrades), and parts obsolescence solutions. We believe in these aircraft, and we will continue to support these Learjets in the future.” Commented Mr. Stewart.

Butler Announces Learjet 35/36 and Learjet 24/25 STC for ADS-B Compliance

Categories: Butler Avionics Headlines | Posted: August 4, 2016 | Comments Off on Butler Announces Learjet 35/36 and Learjet 24/25 STC for ADS-B Compliance

Lear 35 STCOLATHE, KANSAS, August 3, 2016, – Butler National Corporation (OTC Pink: BUKS), a leading manufacturer and provider of support systems for commercial and military aircraft and a recognized provider of management services in diverse business groups including the gaming industry, announces Federal Aviation Administration (“FAA”) Supplemental Type Certificate (“STC”) approval to install the Butler National ADS-B(Out) avionics solution into the Learjet Model 24/25 and Learjet Model 35/36 series airplanes.

The FAA STC approval, STC Number ST02230SE, provides for an ADS-B(Out) solution by retrofit of the two existing transponders with the Garmin GTX-345R [ADS-B(In) and (Out)] or GTX-335R [ADS-B(Out)] transponders and installation of the GTN 625, 725, 650 or 750 Navigator/GPS/SBAS WAAS for real time aircraft location. The Learjet 20 and 30 Series offering expands the Butler Learjet Model 60 ADS-B offering (STC ST02455SE).

The ADS-B equipment mandate in the United States is set for January 1, 2020. The Butler National ADS-B solutions are now available for the Learjet 60, Learjet 35/36 and the Learjet 24/25 series airplanes. The approved installations allow equipment variation for multiple levels of functionality for the operator in addition to ADS-B(Out) compliance. The Butler National Solution offers a cost-effective price point that coincides with functionality. The GTN installation may also provide full WAAS/LPV coupled approach capability as well as roll- steering guidance to the autopilot. The GTX-345R installation offers ADS-B(In) functionality on applications for portable electronic devices, such as the iPad.

Mr. Clark Stewart, President and Chief Executive Officer of Butler National Corporation commented, “The Butler National ADS-B(Out) STC solutions offer very useful upgrades for navigation and communication in addition to ADS-B(Out) compliance. I am confident that operators will also find the ADS-B(In) information very useful with the GTX-345R installation.

Mr. Stewart added: “Butler National is pleased to offer this Lear 20 and 30 Series ADS-B(Out) Solution in addition to the Butler National Lear 60 ADS-B(Out) Solution. We have taken on the opportunity to allow Learjet operators compliance with the ADS-B(Out) requirements well in advance of the 2020 deadline. We have received considerable operator interest in the solutions and have scheduled installation slots into late 2016. We are moving forward with adding the Learjet Model 31/31A and Learjet Model 55 to the STC as well as offering TCAS II-compatible solutions. With our subsidiary, Avcon Industries, we offer the flexibility of combining aircraft maintenance, such as A or B inspections, along with the ADS-B retrofit. Butler continues its efforts to be a ‘go-to source’ for legacy Learjet Solutions. This ADS-B STC solution is one more example of the Butler commitment to the Learjet aircraft.”

For technical information or to schedule a modification for one of the ADS-B solutions, please contact Butler Avionics, Inc. at (913) 829-4606.

Butler Avionics Lear 60 ADS-B Solution STC Approved

Categories: Butler Avionics Headlines | Posted: December 9, 2015 | Comments Off on Butler Avionics Lear 60 ADS-B Solution STC Approved

Learjet Panel WebButler National Corporation received Federal Aviation Administration (FAA) Supplemental Type Certificate (STC), STC number ST2455SE, for its ADS-B(Out) compliant avionics retrofit in the Learjet Model 60. The Butler ADS-B solution replaces the existing transponders and adds a standalone WAAS/GPS position source to seamlessly interface with the existing TCAS II System and satisfy the pending ADS-B (out) regulatory requirements.

The ADS-B equipment mandate is set for January 1, 2020. The Butler National ADS-B solution is now available. The retrofit installs the Garmin GTX 3000 transponders, the GDL 88 GPS/WAAS Sensor and an optional Flight Stream 210. The great thing about the Butler National ADS-B(Out) STC solution is the optional ADS-B(In) functionality. The GDL-88 along with the Flight Stream 210 provide Bluetooth™ connectivity to portable electronic devices (i.e., iPads) and allow the crew to obtain FIS-B flight information (i.e., uplink radar, weather) and ADS-B traffic (rebroadcast and from other ADS-B equipped aircraft). The Lear 60 installation generally takes seven to ten days. Butler National plans to make this same package available on other models such as the Learjet 35/36 and the 31/31A to provide a cost-effective TCAS II compatible solution.

Butler National is in the process of completing additional cost-effective ADS-B(Out) STC solutions for aircraft not requiring TCAS II compatibility. Clark D. Stewart, President, and CEO of Butler National, commented: “With the quickly approaching ADS-B(Out) mandate, Butler has made it a corporate priority to timely bring cost-effective ADS-B solutions to Learjet operators. We are committed to Learjet and its operators to helping make the Learjet 20/30/55 and 60 Series ADS-B compliant. We will work with maintenance facilities, such as Avcon Industries, Inc., to coordinate inspections with ADS-B installs to minimize aircraft downtown. We have received great feedback about the price and availability of the Lear 60 Butler ADS-B solution, and we suggest operators contact us soon to schedule an install.”

For additional installation information or an appointment to install the Butler ADS-B solution in a Learjet Model 60, please call Gary Morris at (913) 829-4606.

Butler Avionics is Hiring

Categories: Avionics News, Butler Avionics Headlines | Posted: July 15, 2014 | Comments Off on Butler Avionics is Hiring





Butler Avionics, Inc. is currently looking for individuals to add to our amazing team of technicians and installers. If you have prior experience and an interest in joining the team at Butler Avionics, please send us an email and a resume. We would love to hear from you.

Please send all correspondence to


Categories: Butler Avionics Headlines | Posted: January 16, 2014 | Comments Off on ADS-B

Not a day goes by that we do not get some sort of question at Kings Avionics regarding ADS-B.  With all of the efforts that have been made to inform aircraft owners and pilots, a good deal of confusion still remains.

When should I start thinking about taking care of ADS-B?

What is the best solution for my situation?

What is this ADS-B requirement I continue to hear about?

Can I buy something to throw on the dash and meet the requirement?

Will the FAA push the deadline back further?


Throughout my aviation career, anything I have ever learned and learned well, I have accomplished so in small doses.  I would like to apply this strategy to the subject of ADS-B over the next few weeks, months, etc.  Attempting to tackle this in small doses should assist in clarifying some of the unknowns surrounding  ADS-B, and answer lingering questions that continue to arise.


The subject is large, here we go…

Aviation is littered with acronyms, let us add one more to the list of pilot jargon.  Impress and astound your colleagues and friends at the your next cocktail party by tossing out the new trending acronym in aviation, ADS-B.

ADS-B Defined-





ADS-B is defined as a surveillance technique in which an aircraft can automatically provide (via a data link) data derived from on-board navigation and position-fixing systems; including aircraft identification, four-dimensional position and additional data deemed appropriate.  The addition of the term, broadcast, is in reference to the broadcast that an aircraft or a ground vehicle can send out; position, altitude, etc.

Basically, ADS-B is the FAA’s successor to current ground-based air traffic control system.  Instead of relying on the current ATC radar system for an aircraft’s location, ADS-B will make use of satellites and GPS technologies to positively identifying and control aircraft in the national airspace system.

In pilot terms, your aircraft will be able to send out a broadcast to ground based stations, other aircraft, or any vehicle that has the capability to receive it. These other receivers will then be able to then have a much more accurate position of your aircraft, increasing safety and the flow or air traffic throughout the national airspace system.

Confused?….. Please stay with me. I feel that if we take on this subject a little bit at a time, we will gain a better understanding of how this new technology will greatly benefit the aviation community.

Next time we will take a closer look at the ADS-B “in” vs.”out”, and the benefits of ADS-B over radar.


Aspen Avionics – Gift Yourself Glass Promotion

Categories: Butler Avionics Headlines | Posted: December 6, 2013 | Comments Off on Aspen Avionics – Gift Yourself Glass Promotion

Substantial savings on all Evolution Systems all wrapped up in a tidy package.

Aspen has announced reduced pricing on the Evolution 2500 as well as the Evolution 1500 and 2000 systems. Pricing on the Evolution 2500 has been reduced from $23,335 list to $19,995.

Package pricing on the Evolution 1500 has been reduced from $15,175 to $12,995,  And, the Evolution 2000 system has been reduced from $18,340 to $15,995.














Offer valid December 3 through December 31, 2013.


Call us today and start planning your new glass panel…..

Garmin adds TAWS-A and more

Categories: Avionics News, Butler Avionics Headlines | Posted: November 7, 2013 | Comments Off on Garmin adds TAWS-A and more
Garmin International Inc., has expanded capabilities and new features for the GTN series. Operators with the latest software upgrade, now have access to optional Class A TAWS, ADS-B out compatibility with select third-party transponders, and scheduled message alerting.
With the addition of class A TAWS, the GTN series, pilots will have an increased level of situational awareness, by providing additional alerts such as excessive closure rates and glideslope deviations. Along with the 
additional safety aspects, the addition of TAWS-A, will help owners and operators meet their respective operating requirements.

Scheduled messaging alerts have also been added to assist pilots during their routine flight operations. These messages can be configured to provide custom alerts on the displays using a specific preset date and time reference, countdown timer, or periodic timer. No longer do you need to try and remember when it’s time to switch fuel tanks, let the GTN alert you at pre determined intervals.

The latest GTN software has received TSO approval and is available at Kings Avionics as a free upgrade for current GTN owners (installation charges apply). Garmin is in the process of updating the AML STC for installation in a wide range of aircraft makes and models. 

Aspen Summer Savings-$500.00 Instant Savings

Categories: Butler Avionics Headlines | Posted: August 26, 2013 | Comments Off on Aspen Summer Savings-$500.00 Instant Savings

Before time runs out, Aspen is offering a great promotion of $500.00 Instant Savings with the purchase of any Aspen Avionics Evolution PFD or MFD.  This limited-time pricing incentive may be combined with your Cash-Back Code rebate that you can get when you call Aspen at (888) 992-7736 or (505) 856-5034. Don’t delay, this offer expires on August 30, 2013.

Get peace of mind with Aspen’s Evolution glass panel displays featuring redundancy features for added safety including dual independent LCD displays, redundant AHRS, and backup batteries. Increase your glass panel area for a high resolution moving map display and geo-referenced approach plates.


Butler Avionics announces Rockwell Collins Dealership

Categories: Butler Avionics Headlines | Posted: July 11, 2013 | Comments Off on Butler Avionics announces Rockwell Collins Dealership

Butler Avionics is excited to announce the addition of Rockwell Collins to our extensive list of Dealerships. As one of the leaders in aviation electronics and communications, Rockwell Collins offers great solutions for aircraft owners and operators. With an ever growing line of new and exciting products for business and commercial aircraft operators, the addition of the Collins line gives Butler Avionics the opportunity to offer additional services and equipment options to our customers, opening up new and exciting opportunities for the future.

















Founded in 1933 as Collins Radio, Rockwell Collins and its products have been recognized for distinctive quality and state-of-the-art technology.

GTN 650

Categories: Butler Avionics Headlines | Posted: January 23, 2013 | Comments Off on GTN 650

GTN Trainer for iPad

GTN 650, a great fully integrated solution in a small package. Combining GPS, COM and NAV functions with powerful multifunction display capabilities such as high-resolution terrain mapping, graphical flight planning, multiple weather options and traffic display, the GTN 650 is a great fit for the panel that is tight on space……


Touch & Go

With GTN 650’s touchscreen interface, you’re rarely more than 2 taps away from the system’s primary functions. Enter waypoint data on the 4.9-in., high-resolution TFT display and swipe your finger across it to pan the map screen. Built-in gripping points on the bezel and lower edge of the display help you stabilize your fingers while using the touchscreen in-flight. Not keen on touchscreen data entry? GTN 650 also has traditional concentric knobs. And, with a GNS 430W/530W, your active flight plan automatically crossfills from the GTN to the GNS. You can also manually crossfill waypoints.

Navigate Easily

Edit your entire route on the map screen and easily enter new waypoints or modify existing ones. The system even lets you load Victor and jet airways. Grab any leg of your flight plan route and move it to accommodate a deviation or ATC amendment to your flight plan with the “rubber band” feature. Enter your most recently visited or nearest airports as waypoints and “Direct To” destinations.

You now have more landing options in IFR conditions. The SBAS/WAAS-certified, 15-channel GPS receiver generates 5 position updates per second, letting you fly GPS-guided LPV glidepath instrument approaches down to as low as 200 feet. The system includes a complete package of VHF navigation capabilities, with a 200-channel VOR/ILS with localizer and glidescope. GTN will preload NAV frequencies for you to manually switch to and can auto select the VHF NAV source for ILS approaches when you load procedures. In addition, precise course deviation and roll steering outputs can be coupled to select autopilots so that IFR flight procedures may be flown automatically. This includes all ARINC 424 leg types, except RF legs. For example, when coupled with a G500/G600 Flight Display, the aircraft can fly fully coupled missed approaches, including heading legs.

Communication Is a Breeze

A fully certified, 2,280-channel VHF communications transceiver provides a standard 10 W (or optional 16 W) of power output. The system is pilot-selectable to both 25 kHz and 8.33 kHz channel spacing. Set your standby COM frequency simply by touching the onscreen number pad. Another touch of the screen flip-flops your active and standby frequencies. Access recent and favorite user frequencies easily. For added safety, holding down the volume knob will automatically dial in the emergency frequency.

See More Than Ever Before

Packed full of multifunction display capabilities, GTN 650 brings enhanced situational awareness to your cockpit. High-resolution terrain mapping — including topography features, cities, airports, terminal areas, SUAs and optional Class B TAWS alerting — help you find your way around airspace safely. Smart Airspace™ automatically highlights airspace close to your current altitude and de-emphasizes airspace away from the current altitude. On the ground, built-in Garmin SafeTaxi® airport diagrams show you geo-referenced runways, taxiways, FBOs and hangars available in either the U.S., Europe or Canada.

Add Traffic & Weather

The dual-link GDL® 88 allows GTN 650 to display up to 60 ADS-B traffic targets. TargetTrend™ relative motion technology gives you a faster, more intuitive way to judge the direction and closure rate of intruding targets in relation to your aircraft’s position. And unique SURF technology supports the display of ADS-B-equipped surface targets on Garmin SafeTaxi® airport diagrams — including taxiing aircraft and ground vehicles. GDL 88 can also receive the FAA’s subscription-free FIS-B weather broadcasts that include graphical NEXRAD radar information, as well as NOTAMs, METARs and TAFs. GTN provides GDL 88 with the WAAS position source required for ADS-B, so a WAAS version of GDL 88 is not required. Add a Garmin Traffic System to compliment GDL 88 for the best possible traffic coverage from now until 2020.

Add a GDL® 69/69A datalink receiver for XM WX Satellite Weather and SiriusXM Satellite Radio (subscriptions required). An optional GSR 56 provides World Wide Weather data almost anywhere on the globe, as well as the ability to make and receive phone calls and send and receive texts messages while in the air.

Use GTN 650 with a Garmin Traffic System to help pinpoint other aircraft in your vicinity. And because it can control a GTX™ 33 remote transponder, a GTN 650 installation saves you valuable panel space.

For more information on the GTN 650, or any of the other products offered by Garmin, give Kings Avionics a call, and let us design the panel you’ve always wanted.

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