About The AD (Airworthiness Directive) Toolbox

The AD Toolbox is offered by Zook Aviation, a family owned and operated business. Our Founder, Reuben Zook, discovered his passion for aviation in the 1970's. To support his appetite for flying, he worked as line service and then served as parts room manager in the 1980’s. Reuben began working with computerized AD research in 1990, when there were very few alternatives to microfiche and paper.

With experience on the ramp, parts room and in the cockpit, he finally found his niche in maintenance and compliance. Reuben has spent the past 30+ years dedicating his work towards delivering an accurate and reliable regulatory library to IA's and Maintenance Technicians.

April Zook (Reuben’s wife), launched her aviation career in 1998, now totaling 20+ years of experience with the general aviation industry. As our Customer Service and Marketing Manager, her mission is to educate our customers on the features and functions of the AD Toolbox through the Zook Aviation Help Blog and social media.

April Zook’s artistic and creative talents help transform Zook Aviation into a lively and colorful business. It's a reflection of who and what we are!

Our Mission

To focus on providing our clients the proven economical benefits of:

• More
• Sooner
• Easier
• With Greater Clarity