Piper PA-44 Seminole — Service Bulletins

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia concerning the Piper PA-44 Seminole series aeroplanes. The directive addresses safety concerns related to the combustion heater fuel pumps installed in these aircraft. It outlines the requirements for visual inspections, corrective actions for any identified leaks, and stipulates compliance timelines for different groups of aircraft based on their serial numbers. The AD is crucial for maintaining the airworthiness of the affected aircraft and preventing potential safety hazards such as fire or explosion in the cockpit due to fuel pump failures.

• The directive applies to Piper PA-44 Seminole series aircraft, specifically models PA-44-180 and PA-44-180T.
• Visual inspections of heater fuel pumps (models 91E92-1 and 91E93-1) are mandatory for safety.
• Group 1 aircraft must complete inspections within 10 hours of service after the original directive's effective date.
• Group 2 aircraft must also complete inspections within 10 hours of service after the directive's effective date.
• Failure to comply with the directive could lead to fire or explosion hazards in the cockpit.