Piper PA-16 Clipper — Type Certificate

This document is an Airworthiness Directive (AD) issued by the FAA, effective June 3, 2015, which supersedes previous AD 99-01-05 R1. It addresses safety concerns related to corrosion and cracking in wing lift struts of various Piper aircraft models, including the Piper PA-16. The directive mandates inspections and potential replacements of wing lift struts and forks to prevent structural failures that could lead to accidents. The document is intended for aircraft operators and maintenance personnel, providing guidelines for compliance and safety measures. It includes detailed instructions on inspection intervals, replacement procedures, and the specific models affected by the directive.

• The AD is effective June 3, 2015, and supersedes AD 99-01-05 R1.
• Affected models include Piper PA-16, PA-16S, and several others.
• Inspections for corrosion and cracks must occur at least every 24 months.
• Replacement of damaged wing lift struts is mandatory if corrosion or cracks are found.
• Estimated compliance cost is $680 per inspection cycle for approximately 22,200 aircraft.