On February 22, 1990, a Grumman G-164A (registration N930X) was involved in an aviation accident near Glynn, LA. No fatalities were reported. Investigators recorded the probable cause as: The right brake intermittently stuck due to the parking brake lever holding onto wear grooves on the actuator rod. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During an agricultural positioning landing on a road, the right tire skidded and the airplane exited the right side, crossing a ditch and a drainage canal. Investigation found the right brake master cylinder actuator rod was scored, causing intermittent brake sticking due to the parking brake lever engaging wear grooves.
Introduction
The aircraft was being repositioned for an agricultural operation. During landing on a road, the right tire began skidding, and the airplane departed the right side of the road. It traversed a small ditch and a drainage canal before coming to rest on the opposite bank of the canal.
Inspection Findings
Post-accident inspection revealed that the right brake master cylinder actuator rod was scored and exhibited wear marks. The brake was found to intermittently stick, maintaining pressure on the right brake. The sticking was attributed to the parking brake lever engaging the wear grooves on the actuator rod.
Probable cause
The right brake intermittently stuck due to the parking brake lever holding onto wear grooves on the actuator rod.
Frequently asked questions
What happened in the 22 Feb 1990 Grumman G-164A accident near Glynn, LA?
During an agricultural positioning landing on a road, the right tire skidded and the airplane exited the right side, crossing a ditch and a drainage canal. Investigation found the right brake master cylinder actuator rod was scored, causing intermittent brake sticking due to the parking brake lever engaging wear…
Were there any fatalities in the 22 Feb 1990 Grumman G-164A accident?
No fatalities were recorded in this accident.
What aircraft was involved and where did it happen?
The accident on 22 Feb 1990 involved a Grumman G-164A, registration N930X, at Glynn, LA.
What was the probable cause of the accident?
The right brake intermittently stuck due to the parking brake lever holding onto wear grooves on the actuator rod.
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