No fatalities

25 Feb 2016: STINSON 108 3 — WHALEN FRANK and EPPERSON MARK — Livermore, CA

Livermore, CA, United States

On 25 Feb 2016, a STINSON 108 3 UNDESIGNAT operated by WHALEN FRANK and EPPERSON MARK was involved in an aviation accident near Livermore, CA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during the landing roll. Contributing to the accident was maintenance personnel's failure to detect the worn tailwheel assembly during the airplane's annual inspection. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A tail-wheel airplane veered right during landing on runway 25L, despite full left rudder and brake application. It exited the runway into tall grass and ground looped, sustaining substantial left wing damage. Post-accident, the pilot noted wind from northeast and increased left rudder/brake pedal travel with reduced effectiveness. Examination found no preimpact mechanical failures.

Accident Details

The pilot of a tail-wheel equipped airplane was performing a landing on runway 25L. The airplane touched down in a three-point landing attitude on the centerline. Shortly after touchdown, the airplane began to veer to the right. The pilot applied full left rudder and left brake, but the airplane continued to the right, departing the runway edge into tall grass. The airplane then ground looped, resulting in substantial damage to the left wing.

Pilot Observations

While taxiing the airplane back to the hangar after the accident, the pilot noted that the wind was blowing from the northeast and that runway 7L was now in use. He also observed that the left rudder and brake pedal required more travel distance than the right pedal, and the left brake exhibited reduced effectiveness during the return taxi.

Postaccident Examination

A postaccident examination of the brake system was conducted. The examination revealed no evidence of preimpact mechanical malfunctions or failures that would have precluded normal operation of the brakes.

Contributing factors

Causes

Directional control — Not attained/maintainedPilot

Other contributing factors

Fatigue/wear/corrosionNose/tail landing gear — FailureInadequate inspectionMaintenance personnel