On the Record: Glasair—Colorado

May 16, 2018

The nylon brake line fits in a groove along the trailing edge of the main gear strut.
The nylon brake line fits in a groove along the trailing edge of the main gear strut and exits at the top where it enters the fuselage. [Glasair Construction Manual]

During the landing roll, the aircraft started drifting to the left and the pilot applied right rudder to correct. He subsequently attempted to apply right brake pressure to further correct for the drift as the airplane was traveling about 50 knots. At that time, the right brake pedal “went to the floor,” and there was “zero” right brake available. The airplane departed the left side of the runway, crossed the grass, and came to rest on the parallel taxiway.

A post-recovery examination revealed that the nylon right brake line was broken near the upper end of the landing gear strut. The airplane was equipped with a free-castering nosewheel and did not have any nosewheel steering capability.

NTSB Factual Report.

Ron Wanttaja
Ron Wanttaja
Ron Wanttaja is a retired space systems engineer. During a 40-year career, he helped design, build, test, launch, and operate 18 spacecraft, including the International Space Station. On the aviation side, he has owned a Bowers Fly Baby since 1996 and flew the original prototype for seven years before acquiring his own. He lives just outside of Portland, Oregon, with his wife, romance novelist Lisa McAllister.

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Canard Boulevard
Canard Boulevard
17 days ago

Exactly the reason I removed the nylaflow brake lines from my airplane this spring.

Stephen K
Stephen K
17 days ago

A friend’s Long-Ez was substantially damaged in a similar incident due to a failure of the Nylaflow brake line, possibly because the tubing was weakened where it was inadvertently pinched. The accident motivated me to replace the brake lines in my VariEze with 1/8” stainless steel tubing last year.

John Caulkins
John Caulkins
Reply to  Stephen K
16 days ago

Stephen K

Perhaps you would be willing to put together a more detailed report of these two experiences for inclusion into the Canard Owners and Builders Association (COBA) Forum (forum@canarfowners.com) to benefit all canard operators worldwide with your observations?

John Caulkins

John Caulkins
John Caulkins
Reply to  John Caulkins
16 days ago

Stephen K

My apologies! The URL should be corrected to “forum@canardowners.com”.

John Caulkins