On August 10, 1994, a Grumman AA-5 (registration N1392R) operated by Ross,leonard was involved in an aviation accident near Ormond Beach, FL. Investigators recorded the probable cause as: The distorted seal at the carburetor flange, which allowed dirt and moisture to enter the carburetor, following maintenance work performed two days prior. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft suffered a loss of engine power during takeoff, resulting in a collision with trees. Investigation revealed that dirt and moisture had entered the carburetor through a distorted seal at the flange.
What happened
The instructor and student experienced a sudden loss of engine power while attempting to take off. The airplane was unable to maintain altitude and collided with trees before falling to the ground.
The investigation
A detailed examination of the aircraft's engine air induction system revealed significant issues. Investigators found a distorted seal located at the carburetor flange. This damage allowed dirt and moisture to enter the carburetor, disrupting its normal operation. Records indicated that the carburetor had been removed and worked on by a local mechanic just two days before the accident.
Findings
The primary factor contributing to this event was the compromised integrity of the carburetor seal. The distortion prevented a proper seal, allowing contaminants to bypass filtration and enter the fuel system. This occurred shortly after maintenance work was performed, suggesting a potential installation error or part defect during the repair process.
Probable cause
The distorted seal at the carburetor flange, which allowed dirt and moisture to enter the carburetor, following maintenance work performed two days prior.
What happened in the 10 Aug 1994 Grumman AA-5 accident near Ormond Beach, FL?
An aircraft suffered a loss of engine power during takeoff, resulting in a collision with trees. Investigation revealed that dirt and moisture had entered the carburetor through a distorted seal at the flange.
What aircraft was involved and where did it happen?
The accident on 10 Aug 1994 involved a Grumman AA-5, registration N1392R, operated by Ross,leonard, at Ormond Beach, FL.
What was the probable cause of the accident?
The distorted seal at the carburetor flange, which allowed dirt and moisture to enter the carburetor, following maintenance work performed two days prior.
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