Efficient Engines

There are many ways to increase an engine's efficiency when rebuilding. Tom Wilson reviews the options, along with the costs involved and the expected returns.

What’s New

MGL Avionics introduces a V6 com radio, and Grand Rapids Technologies offers a 10.4-inch HXr EFIS.

Wind Tunnel

Design process, part 2-how high should you fly?

Kit Stuff

Drawing on experience; by cartoonist Robrucha.

Aircraft Records and Logbooks

What's required for Experimental/Amateur-Built Aircraft?

DIY Firewall Penetration

Properly seal the firewall penetrations to keep fumes from entering the aircraft cabin.

Design Process: Distribution of Lift Coefficient

In the last few months, we have explored how planform and taper affect both the distribution of total lift across the span and the...

Exhausting!

We visit Vetterman Exhaust for a behind-the-scenes look at how exhaust systems are made.

The EAA HAC Grows

The EAA’s Homebuilt Aircraft Council (HAC) has expanded to better address this segment’s needs.

Thundering Mustangs

If you want to go faster, add more horsepower.

In Case You Missed it

Letters

Real-World ADS-BThank you for Dick Sunderland's articles, "Juggling the ADS-B Options" and "What...

Do’s and Don’ts of Aircraft Building, Part 2

Do’s and Don’ts of Aircraft Building, Part 2

Here Come Hell’s Bells Again

We can use decibel calculations no matter if we are measuring in power or voltage; the calculations and outcome are identical.

Completions

Builders share their successes.