Cessna 340 PowerPac Spoiler Kit

Cessna 340 PowerPac Spoiler KitEnjoy the added benefits with your spoiler equipped Cessna 340 airplane!

When it’s time to come down you’ll be glad you have PowerPac Spoilers installed on your Cessna 340 aircraft.

With PowerPac Spoilers you command descent rates up to 3.5 times faster. Simply touch a button and PowerPac Spoilers instantly reduce lift and increase drag.

Deploy your Cessna's PowerPac Spoilers at any speed up to Vne for rapid descent rates without the need for major power reductions. Avoid engine shock cooling and maintain cabin pressure.

PowerPac Spoilers are doubly useful in sudden turbulence by reducing lift-induced loads carried by the wings. The Jet Type design provides maximum effect, no drag when retracted and lower installation cost. Plus you can deploy and retract PowerPac Spoilers in icing conditions.


I used mine on the way home from the convention today. Was descending into some weather/turbulence and they do a great job at keeping airspeed under control when coming in through rough air in the 340.
Tim Persson, April 2022

PowerPac Spoiler Performance Graph depicts actual flight test data obtained during required FAA certification flight tests of a Spoilers equipped Cessna 340.

Cessna 340 SpoilerPowerPac airplane spoilers "Jet Type" design is similar to those used on commercial jet airliners. The system consists of single flat plates, 21.00" X 7.750" one on top of each wing that lies flat when not in use.

When deployed, they extend upward into the slipstream at a 60-degree angle, thereby "spoiling" a portion of the lift being generated by the wing, while at the same time creating drag.    PowerPac Spoilers are designed to work in conjunction with standard Cessna 340 aircraft parts.

Article from Twin Cessna Flyer magazine, discussing the benefits of spoilers.

Estimated Installation Time and Labor

There is an STC’d PowerPac Spoiler Kit just for your Cessna 340. We’ve flown many hours in your aircraft type during testing and certification. Give us a call today: 253-851-1769 or Email Us.

STC: SA4948NM 6-19-90 SP8000 Cessna 340, 340A (Without STOL) Uses independent, dedicated hydraulic power pack.

Cessna 340 Installation Time: 40-45 Labor hours.

2019 Aircraft Owner Net Pricing

- Cessna 340, 340A Net $8495


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