Home Authors Posts by LeRoy Cook

LeRoy Cook

LeRoy Cook
Contributing Editor LeRoy Cook is an experienced journalist with writing credits in just about every aviation publication that counts. He brings a wealth of knowledge and perspective to his flight reviews.

Zenith Aircraft Marks 30 Years In Mexico

On September 16 & 17, 2022, Zenith Aircraft’s latest edition of its annual open house celebrated the factory’s 30th anniversary. We made our first...

Finding the Proper Prop

Which propeller is right for your homebuilt?

Hummel Happenings

Hummel Aircraft holds its 2021 fly-in at its new home in Howell, Michigan.

The Rationale Of Oshkosh

To expend considerable time and treasure converging on a medium-size city in Wisconsin every summer, just to hang out with like-minded aviation aficionados, doesn’t...

Warbirds Tram Ride—AirVenture’s Best-Kept Secret, And It’s Free

For 12 years, a dedicated bunch of Warbird volunteers has been spreading the “Keep ‘Em  Flying” gospel of preservation and education among AirVenture attendees...

Buying Used: Zenith STOL CH 701

For 35 years, the “Sky Jeep” has soldiered on.

AirVenture Revival Arrival

This year’s VFR Arrival Procedures were justly revised, although not confusingly so, after 2019’s Black Sunday debacle when two day’s worth of airplanes tried...

2021 Propeller Buyer’s Guide

Which Propeller?

Twelve Months to Takeoff

The first customer-built Zenith CH 750 SD takes to the sky.

Buying Used: Long-EZ

Construction workmanship varies greatly, so it pays to have experienced eyes look over your temptation before you succumb to its charms.

In Case You Missed it


Builders share their successes.

Kit Stuff

Top Overhaul

Gray oil is good, but what about black oil that looks like tar?

Engine Theory: Basic Layout

Engine basics and layouts-why our engines are shaped the way they are.