Piper PA-23 Apache — Maintenance Manual

This document is a Service Letter from Piper Aircraft, Inc. detailing maintenance procedures for the Gascolator used in various Piper aircraft models, including the Piper PA-23 Apache. The letter outlines the importance of maintaining the Gascolator to ensure the reliability of the fuel system. It specifies compliance requirements for affected models, including initial and recurring maintenance intervals. The document is intended for maintenance personnel and aircraft owners to ensure proper upkeep of the Gascolator, which is crucial for separating contaminants from the fuel system. The procedures provided are to be followed during regular maintenance events, emphasizing safety and compliance with FAA regulations.

• Initial compliance with Gascolator maintenance should occur within the next 50 hours of operation.
• Recurring maintenance is required every 90 days or every 50 hours, whichever comes first.
• The Gascolator is crucial for separating contaminants from the fuel system.
• Safety precautions must be taken when draining fuel to prevent fire hazards.
• Documentation of compliance with maintenance procedures is mandatory in the aircraft logbook.