In 2014 Van’s Aircraft put out a service bulletin for potential cracking in the horizontal stabilizers of the RV-6, RV-7 and RV-8 series of aircraft. While the service bulletin calls for annual inspections in this area, I recommend more frequent checks for those aircraft that are regularly performing aerobatics. The crack shown in the photo was discovered two months after a condition inspection.
In Case You Missed It
Wind Tunnel
Today, monoplanes dominate, but biplanes came first. They had their advantages—and for some of today’s missions, they still do.
Wind Tunnel
Increasing the weight of an aircraft will affect its performance in all phases of flight.
Light Stuff
After studying Experimental aircraft, the National Transportation Safety Board developed 16 recommendations. Roy Beisswenger outlines the good, the bad and the still-needed.

![Last Bits [Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/04/Inspections-1-scaled.jpg?w=218&h=150&crop=1)
![Weight In The Balance [Credit: Eric Powell]](https://www.kitplanes.com/wp-content/uploads/2026/02/AdobeStock_1043661239-scaled.jpeg?w=218&h=150&crop=1)










Excellent information
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