Loss of directional control during landing in tailwheel aircraft

Casualties unknown • Wasilla, AK, US

A private pilot lost directional control of a tundra-tire equipped tailwheel airplane while landing on a dirt overrun, following an encounter with deep ruts.

What happened

During the conclusion of a 14 CFR Part 91 personal flight, a pilot was performing a landing on a hard-surfaced runway. At the end of the runway, the pilot utilized a non-maintained dirt overrun. As the tailwheel airplane continued its landing roll onto this surface, the tires encountered deep ruts and soft dirt. The pilot reported being unable to maintain directional control of the aircraft during this phase of flight.

The investigation

Following the accident, an aviation mechanic performed repairs on the aircraft. During the inspection, it was noted that the right brake assembly had a slow fluid leak. This condition may have resulted in diminished braking action at the time of the incident. The mechanic replaced portions of the right brake assembly as part of the repair process.

Findings

  • The pilot encountered deep ruts and soft dirt on a non-maintained dirt overrun.
  • The pilot reported that the right brake felt flat and ineffective, which may have contributed to the loss of directional control.

Probable cause

The pilot was unable to maintain directional control after the aircraft tires encountered deep ruts and soft dirt on a non-maintained dirt overrun, potentially exacerbated by diminished braking action due to a slow fluid leak in the right brake assembly.

Frequently asked questions

What happened in the 2005-04-28 Piper PA-18-160 accident near Wasilla, AK?

A private pilot lost directional control of a tundra-tire equipped tailwheel airplane while landing on a dirt overrun, following an encounter with deep ruts.

What aircraft was involved and where did it happen?

The accident on 2005-04-28 involved a Piper PA-18-160, registration N624MW, at Wasilla, AK.

What was the probable cause of the accident?

The pilot was unable to maintain directional control after the aircraft tires encountered deep ruts and soft dirt on a non-maintained dirt overrun, potentially exacerbated by diminished braking action due to a slow fluid leak in the right brake assembly.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20050505X00559. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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