How Skin Condition Affects Aircraft Performance
In the last few editions of Wind Tunnel, we looked at how changes to the surface of an airplane's skin can affect the aerodynamic...
In Case You Missed It
Ask the DAR
DAR Mel Asberry answers questions about when you need A&P signoff, re-certifying an airplane to make it an LSA (hint: cant be done) and pre-registration of an Experimental.
The Home Machinist
Home Machinist Bob Fritz had been looking for a way to compare the effectiveness of various screw extractors he had accumulated in his toolbox, and he found a willing test subject in a Cessna 170s 60-year-old gas tank.