Paul Mulwitz's Blog (3)

Flight Test Report - Normal Operating Procedures - Zodiac XL.

Flight Test Report - N773PM

Zodiac XL - Jabiru 3300

By Paul Mulwitz -- June 2, 2012

As phase I flight test nears its end I wanted to record some of the things learned about this airplane. The information presented here is not very official, but it might help me or…


Added by Paul Mulwitz on February 15, 2013 at 11:39am — 1 Comment

Flight Test Complete.

Phase I flight test completed 9/26/2012.  Phase II now active, but weather has prevented much flight.  The weather around here (Pacific NW rain forest) should clear up around May 2013.  I plan to do some real cross country flying at that time.

All problems fixed in Phase I except lack of yaw stability.  That seems to be inherent in the design.  There is no vertical stabilizer because of the full flying rudder and no portion of the fuselage side is…


Added by Paul Mulwitz on December 16, 2012 at 12:03pm — 7 Comments

Project Update - XL in flight test.

After 6 years my XL was certified in July, 2011. As of today (Jan 2012) it is over half way through phase I flight test.  I expect to complete flight test and enter phase II in the Spring.

I had a number of small problems in flight test.  Most of them have been resolved.  The primary issue was engine cooling (Jab 3300).  Other problems included the engine cutting out from a loose carburetor and a flat nose wheel from underinflation and damage to the tube when the tire rotated and…


Added by Paul Mulwitz on January 3, 2012 at 12:10pm — 3 Comments

New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...


Weather Maps

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, power distribution panel, Approach Fast Stack harnesses, Dynon and Garmin avionics, and more.

Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits

Zenith Apparel from EAA:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

How to videos from

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit for the latest DVD titles.

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance

Pro Builder Assistance

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2020   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service