Dafoe Gerald W TCOW SMITH CUB N810GL

Summary

On 14 July 2015 at about 16:30 local time, a Dafoe Gerald W TCOW SMITH CUB registered N810GL was involved in an accident near Cascade, Idaho, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

14 July 2015 at 16:30

Classification

Accident

Location

Cascade, Idaho, United States

Nearest airport

Cascade (KU70)

Coordinates

44.4917, -116.0000

Aircraft

Dafoe Gerald W TCOW SMITH CUB

Registration

N810GL

Category

Airplane

Year built

2009

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Cascade → Cascade

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR15LA218

Nobody was injured.

A gouge in the right brake master cylinder piston O-ring, which resulted in a loss of brake pressure and reduced effectiveness after landing. Contributing to the accident was the pilot’s decision to operate the airplane with an ongoing brake issue.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The private pilot/owner of the ultralight airplane was conducting a personal flight. He stated that, after landing, he applied the brakes to slow the airplane. He did not feel any right brake resistance, and the airplane swerved left due to left brake application. He attempted to correct with rudder inputs, but the airplane ground looped to the left, which resulted in the right landing gear collapsing and damage to the right wing. The pilot stated that the he had recently been having ongoing difficulty with the airplane's right brake function. Examination and disassembly of the right brake master cylinder revealed that the master cylinder piston O-ring had a gouge in it. The gouge likely allowed brake fluid to bypass the seal, which resulted in a loss of brake pressure and, therefore, reduced effectiveness after landing.

Quoted verbatim from the NTSB record.