Shear Joints

When using fasteners loaded in shear, things can get interesting. The wing of the B-17 is attached to the fuselage by three bolted shear joints. Last month, I wrote about joints involving threaded fasteners loaded in tension—that is, along the bolt’s longitudinal...

Tense Bolts

When using threaded fasteners in tension, it’s all about the preload. Tightening a cylinder hold-down nut is an extraordinarily critical task. Failure to do it exactly right can result in catastrophic engine failure. Threaded fasteners are ubiquitous in aviation. Look...

Hostage Situation

Don’t fall victim to an overzealous mechanic. Mark is the owner of a beautiful Cessna 185 Skywagon based in the San Francisco Bay area. Awhile back, Mark and his wife travelled to Minden, Nevada in this airplane to visit with Mark’s mother-in-law who was ill. A few...

Evicted

Thoughts about being temporarily booted out of my hangar. From the time I first acquired my Cessna 310 in 1987, it has been hangered at Santa Maria Public Airport. Initially, I kept it in a large community hangar. Then in 2003, after a long wait on the airport hangar...