SUBJ: Wing Spar
Date: October 19, 2022
This is information only. Recommendations aren’t mandatory.
This Special Airworthiness Information Bulletin (SAIB) alerts all owners, operators, maintenance technicians, and inspectors of Piper Aircraft, Inc. (Piper) PA-28 and PA-32 airplanes of information gathered as a result of a fatal accident of a Piper Model PA-28R-201 airplane in 2018 and the inspection findings that followed. The accident, determined to be caused by fatigue cracks in the lower spar cap, resulted in the Federal Aviation Administration (FAA) issuing Airworthiness Directive (AD) 2020-26-16, which requires several actions including a one-time inspection of certain lower spar cap bolt holes. AD 2020-26-16 was issued as an interim action and requires reporting certain inspection information to the FAA to help determine the number of cracks present in the fleet. The inspection reports received by the FAA thus far indicate the presence of numerous cracks and hole-quality issues in a significant number of airplanes.
FAA SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Models PA-28-151, PA-28-161, PA-28-181, PA-28-235, PA-28R-180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-28RT-201, PA-28RT-201T, PA-32-260, PA-32-300, PA-32R-300, PA-32RT-300, and PA-32RT-300T airplanes. This AD was prompted by a report of a wing separation caused by fatigue cracking in a visually inaccessible area of the lower main wing spar cap. This AD requires calculating the factored service hours for each main wing spar to determine when an inspection is required, inspecting the lower main wing spar bolt holes for cracks, and replacing any cracked main wing spar. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective February 16, 2021.
Click to view entire AD 2020-26-16 beginning on page 12.
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all Piper Aircraft, Inc., (Piper) Models PA-46-350P (Malibu Mirage), PA-46R-350T (Malibu Matrix), and PA-46-500TP (Malibu Meridian) airplanes. This AD was prompted by a finding of several airplanes with wing assemblies that did not have the proper stall warning heater modification design. Without the proper stall warning heat control modification kit installed, during flights into icing conditions with the landing gear down, ice can form on the stall vane, which may result in failure of the stall warning system. This AD requires identifying and correcting nonconforming stall warning heat control systems. The FAA is issuing this AD to address the unsafe condition on these products.
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Models PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28-235, PA-32-260, and PA-32-300 airplanes. This AD was prompted by reports of corrosion found in an area of the main wing spar not easily accessible for inspection. This AD requires inspecting the left and right main wing spars for corrosion, and, if corrosion is found, taking all necessary corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.