Partial power loss involving a Piper Aircraft Corp PA-25-235, VH-AMZ, 8km E Meeniyan, VIC on 27 March 1993

The engine lost power soon after take off due to the failure of the welds securing the airflow straightener vane located in the hot air box. The liberated vane was sucked into and blocked the airfow through the carburettor throat. The CAA airworthiness branch is investigating the need for these vanes as they are not fitted to all Pawnee aircraft and their failure can have catastrophic results.