Piper PA-31 Navajo Chieftain — Service Bulletins

This Airworthiness Bulletin (AWB) addresses the wing leading edge stall strip configuration for all Piper PA-31 Series aircraft, including the Navajo and Chieftain models. Issued on September 10, 2010, this document serves to clarify the requirements for stall strip installation, which is crucial for maintaining the aircraft's low-speed flight handling characteristics. The bulletin highlights the importance of ensuring that stall strips are installed correctly, as improper installation can lead to non-compliance with Type Design. It also provides guidance for operators regarding the verification of stall strip configurations based on specific aircraft serial numbers. The document emphasizes the need for operators to review their aircraft's stall strip installations urgently and to consult the Illustrated Parts Catalogue (IPC) for correct part numbers and configurations.

• The bulletin applies to all Piper PA-31 Series aircraft, including Navajo and Chieftain models.
• Stall strips significantly improve low-speed flight handling characteristics.
• Operators must ensure stall strips conform to Type Design as per FAA AD 69-11-05.
• Incorrect stall strip installation can lead to non-compliance with Type Design.
• Consult the Illustrated Parts Catalogue for correct part numbers and configurations.