Czech Sportplanes Sro DYNAMIC WT9 N247DY

Summary

On 6 January 2012 at about 15:00 local time, a Czech Sportplanes Sro DYNAMIC WT9 registered N247DY, operated by William B. McKee, was involved in an accident near Glendale, Arizona, 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

6 January 2012 at 15:00

Classification

Accident

Location

Glendale, Arizona, United States

Nearest airport

Glendale Municipal Airport (KGEU)

Coordinates

33.5269, -112.2953

Aircraft

Czech Sportplanes Sro DYNAMIC WT9

Registration

N247DY

Category

Airplane

Engines

1

Operator

William B. McKee

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Glendale → Glendale

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR12LA074

Nobody was injured.

The pilot did not shut down the engine upon recognizing a brake malfunction. Contributing to the accident was the airplane's brake malfunction for undetermined reasons.

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

Read the full NTSB narrative

According to the pilot, he performed a brake check and used the brakes numerous times while taxiing to the run-up area; however, as he approached the run-up area, the brakes failed, and the airplane continued to roll forward. He decided to steer the airplane off the taxiway surface and not risk an excursion onto the active runway. The airplane veered off the paved surface onto unprepared desert terrain, and the airplane continued to accelerate. The pilot attempted to shut down the engine with the ignition switch, but was unable to. He said that normal engine shut down is accomplished using two magneto switches on the instrument panel and not the ignition switch. The airplane then struck a boundary fence. Postaccident examination revealed that the left wheel brake assembly was damaged by impact forces consistent with the airplane’s collision with the fence. The examination of the brake system for fluid leaks and functionality did not disclose any evidence of a preexisting mechanical malfunction that would have precluded normal operation. It is likely that, if the pilot had shut down the engine before the airplane departed the taxiway surface, he would have been able to stop in time to avoid colliding with the airport boundary fence.

Quoted verbatim from the NTSB record.