Mon, Apr 19, 2021
AD 2021-09-02 Corrects An Incorrect Modification Kit Part Number
The FAA is superseding Airworthiness Directive (AD) 2021-04-07 which applied to certain Piper Aircraft, Inc., (Piper) Models PA-46-350P (Malibu Mirage), PA-46R-350T (Malibu Matrix), and PA-46-500TP (Malibu Meridian) airplanes.
AD 2021-04-07 required identifying and correcting nonconforming stall warning heat control systems. Since AD 2021-04-07 was issued, the FAA was notified of an error in the stall warning heat control modification kit part number. This AD retains all of the actions in AD 2021-04-07 and corrects the incorrect modification kit part number. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective April 16, 2021.
Supplementary Information: The FAA issued AD 2021-04-07, Amendment 39-21428 (86 FR 10770, February 23, 2021), (AD 2021-04-07), for certain Piper Models PA-46-350P (Malibu Mirage), PA-46R-350T (Malibu Matrix), and PA-46-500TP (Malibu Meridian) airplanes. AD 2021-04-07 required identifying and correcting nonconforming stall warning heat control systems. AD 2021-04-07 resulted from the finding of airplanes without the proper stall warning heater modification design change. Without the proper stall warning heat control modification kit, 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. The FAA issued AD 2021-04-07 to require identifying and correcting nonconforming stall warning heat control systems, which, if not addressed, could result in the pilot being unaware of an approaching stall situation.
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