Precise Flight makes a fine speedbrake for Bonanzas.  Now we install a set.

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Holes are cut into the top wing skin and doublers are installed.





The speedbrake cartridges are installed to the area, with added support from the ribs. Then there is a whole lot of wiring to do.



The wiring ends up as a push switch to deploy or retract the speedbrakes. If they do not deploy symmetrically, you get a momentary light for the one that did go up, then an automatic retraction. Nice safety feature.





They don’t look that imposing, but they do the job quite well.