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Aeronautical Engineer, Pilot & Air-frame & Power-plant mechanic (A&P), Current president of EAA (experimental Aircraft Association) chapter 837 (Payette, ID), Past instructor, computers, robotics and aviation, Past Director of Maintenance (two airlines), Past Continental Airlines shift supervisor (Anchorage, Alaska)

Experience in the area

FAA certified commercial pilot FAA certified (A&P) Air-frame & Power-plant mechanic Aeronautical Engineer - University of Anchorage (Alaska) High school instructor, computers, robotics and aviation Current president of EAA chapter 837 (Payette, ID) Past Director of Maintenance (two airlines) Past Continental Airlines maintenance shift supervisor (Anchorage, Alaska)


Current president of EAA chapter 837 (Payette, ID)


FAA certified commercial pilot FAA certified (A&P) Airframe & Powerplant mechanic Aeronautical Engineer - University of Anchorage (Alaska) FCC MROP-Marine Radio Operators License FCC GROL-General Radio Operators License FCC RADAR endorsement GEN FAM certificates MD aircraft GEN FAM certificates Boeing aircraft State Instructor License High school instructor, computers, robotics and aviation

Past/Present Clients

Continental Airlines, University of Anchorage, Pegasus Aircraft Maintenance, Klondike Air, Methow aviation, Bridget Mina infant Foundation, Aviation Wholesale Supply, Bureau of Land Managment

What do you like about this subject?

Aviation is an ideal industry to be in if someone likes to be learning new things in all technical fields. Each year airplanes change and are effected by new technology in metallurgy, chemistry, engines, plastics, electronics, welding, etc.

What do you still hope to achieve/learn in this field?

I am always learning as technology progresses forward. I enjoy mentoring others - this refreshes my memory and makes research in new areas enjoyable.

Something interesting about this subject that others may not know:

The average commercial jet lands with 3-5 problems that maintenance fixes or defers (MEL) before the next flight. The flight can not continue unless both maintenance and the pilot accept the plane for safe flight.

Something controversial or provocative about this subject

Most Common Reasons for Plane Accidents: 50% - Pilot Error, 22% - Maintenance Error, 12% - Weather, 9% - Sabotage, 7% - air traffic controllers

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Recent Answers from J. Zumwalt

2016-09-24 Light Aircraft Safety:

Airliners use a prioritized message system. For example, if the airplane is on fire, that is given a higher priority than  a low fuel alarm. Also, light aircraft attempt to show ALL the information on

2016-09-23 Light Aircraft Safety:

Actually, technology has increased the accident rates. Since "glass" cockpits, accident rates have gone up. Apparently pilots are being overwhelmed with information instead of just receiving the basic

2016-06-27 space-x booster rocket recovery:

While it would be possible, the same money and effort would just as well be spent perfecting the landing system. Part of the long range goal of the project is to eventually automate landings on earth,

2015-08-07 Rise:

1) The first statement is an incorrect assumption (false). Falling body's will fall at 32ft/sec above the earth regardless of their "weight", mass, or density. If a hammer and a piece of Styrofoam are

2015-07-17 air safety:

There are a couple of issues that make laser deterrents hard to be practical.  1) Lasers are very narrow beams - even an amateur beam is only a few inches in diameter at a few miles. So having a reflector


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