Recommended overhauls on constant-speed propellers are important. Here is a blade root that would not pass inspection due to scraping—most likely caused by improper lubrication or periods of inactivity.
![[Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/4_rutan_a_longez.jpg_preview.jpg?w=218&h=150&crop=1 "Rutan Symposium Turns to the Coming Canard Maintenance Crisis")
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/02/Fuel-Selector.jpg?w=218&h=150&crop=1 "Fuel Follies")
In Case You Missed It
Hatz CB-1 Classic
It took 10 years for Hansueli and Samuel Gautschi to complete the ultimate do-it-yourself project, and the result is an absolute gem. By Ernst Bickmeier.
Letters
Fish TalesConcerning Dean Sigler’s “Alternative Energies” article , he got one item wrong. Hydroelectric...
MGL Avionics Stratomaster MAXI Single E1
MGLs maxi singles are designed to drop into a standard 3.125-inch hole, while the Smart Singles fit into a 2.25-inch hole. Author Rick Lindstrom found that the Maxi Single E1 engine monitor was just the ticket to get him flying while his other unit was in the shop for repairs.
If it’s on an amateur-built experimental (this is still Kitplanes, right?), by the FAA’s definition it’s not airworthy from the get-go.
Whether it’s in a condition for safe operation is a different matter altogether,
Ironically, we do give them an airworthiness certificate.
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