ShockBox Landing Gear Breakout Box

The ShockBox® Landing Gear Breakout Box has been designed to be universal in nature. While the term “universal” is often dismissed as being low quality, our Landing Gear Breakout Box is manufactured with the highest quality components. Add a harness built specifically for your aircraft model and you have a powerful troubleshooting and rigging tool for your shop. The advertised price of the test box includes one set of harnesses for a single aircraft. You can add harnesses for other aircraft models for $1500 – $2000 each set, depending on the model and serial number of the aircraft. To date we have built harnesses for the Cessna 525, 525A, 525B, 560 Encore, 560XL, 560XLS and 680 Sovereign aircraft. Call us with your aircraft model and serial number!


  • Engage/disengage squat switches
  • Engage/disengage landing gear up-locks
  • Engage/disengage landing gear down-locks
  • Perform maintenance and testing of the anti-skid system while the aircraft is on jacks
  • Perform maintenance and tests on thrust reversers while the aircraft is on jacks

Landing Gear Harnesses

Need Additional Landing Gear Harnesses?

While your ShockBox Landing Gear Breakout Box comes with one set of harnesses of your choosing, you can add additional harnesses.

Just provide your aircraft make, model and serial number to ensure we build the correct harness for your application.

Prices vary from $1850 to $2500, depending on the complexity of the harness and the cost & quantity of connectors required.

Keep in mind some harnesses only fit a small serial number range of aircraft, as there are breaks in serial numbers of the same aircraft model. Yet other harnesses will fit more than one model of aircraft.

In some cases, we may not have the schematic for your aircraft and will ask you to supply the schematics.


Frequently asked questions

To purchase a test box, first it is recommended that you contact us to check availability of the test box you are interested in. If we have yours in stock or you request us build one for you, the next step is to send us a purchase order via email to: [email protected] This will get the ball rolling. Once we have the test box packaged ready for shipment we will contact you for payment. Payment must be received prior to shipment.

Yes we accept for Visa, MasterCard, Discover and American Express for domestic (US) destinations and from US based banking institutions only. While rare, we do accept wire transfers for domestic payments and shipments as well. If you are outside the United States, we require a wire transfer payment. We can provide you wiring instructions.

We do not currently accept PayPal. We try to keep the cost of our test boxes down to benefit the small maintenance shops. This does not allow us enough mark up to absorb the PayPal and credit card fees. We may revisit the policy in the future if the demand requires.

Unlike other companies, we do not profit from shipping charges. We charge what we are charged! The shipping rate will be based on the packaged shipping weight, the package dimensions, and the distance to its destination + insurance for the value of the test box purchased. Most of our test boxes usually weigh around 8 pounds boxed in a 12 in x 12 in x 10 in box. The landing gear breakout box varies by the harness chosen and ships in a larger box.

We ship UPS and FedEx domestically, and we ship UPS, FedEx and DHL internationally. We can bill the charges to your own shipping account if you wish. We have daily UPS service and shipments usually ship the same day as long as the payment transaction is completed prior to 1:00pm Central Time Zone. FedEx only picks up expedited shipments the same day. FedEx Ground shipments usually leave the next business day.

ShockBox has a one year warranty against manufacturing defects. We will repair or replace a defective test box at our discretion. Usually we will choose the option that is faster.

While rare, we do offer a quantity discount to customers who purchase multiple test boxes. If you were to purchase multiple test boxes of the same model, the discount is better than if you order multiple test boxes of different models. We do not offer discounts on a single test box.

No! We are the test box manufacturer, we do not deal in used test boxes. Occasionally, we will have a unit that may have a cosmetic “flaw” in its appearance, but works just fine. We do offer these with a discount if you don’t mind the flaw. You can always ask about availability, but they usually go pretty quickly.

No! While a few of the components used in our test boxes are manufactured abroad, we choose the best quality components available. All our test boxes are designed, manufactured and tested in our suburban Oklahoma City location. Our parent company is a FAA Certified Repair Station and we test all our test boxes in this facility before they go into production.


Our customers are from all over the world. We can ship to your repair shop or charter operation.


No more shipping off parts to be tested. Your aircraft can return to service within a few hours.


Reduce maintenace cost for Charter Operations and Aircraft Repair Stations when you bring testing in house.


Backed by a one year warranty against manufacturing defects. You can count on quality test equipment.


You might also like these Test Boxes

BFG PS-835 PS-850 PS-855 Cap Test Box

cap check

Capacitance Test Boxes

Capacitance test boxes designed for maintenance shops and charter companies that want to perform test functions in-house.

Landing Gear Breakout Box

Landing gear

Landing Gear Breakout Boxes

Aircraft landing gear testing equipment designed directly from the Maintenance Manual as a powerful troubleshooting and rigging tool.

Misubishi Mu300 Electrical System Test Box

Aircraft specific

Aircraft Specific Test Boxes

Task specific test boxes for aircraft maintenance shops. When the maintenance manual calls for testing a specific, we can help you out.