Airworthiness Directive · Amendment 39-22012 · Auto flight system
Pilatus Aircraft Ltd. Airplanes
This AD applies to Pilatus Aircraft Ltd. Model PC-24 airplanes, all serial numbers, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD was prompted by a failure of the dual ethernet communication channel on a dual-channel data concentration and processing unit, which triggered the opening of electronic circuit breakers that caused several unintended system activations. This AD requires installing a software (SW) upgrade to the utility management system (UMS), as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
(1) For Group 1 airplanes as defined under the “Definitions” section in European Union Aviation Safety Agency AD 2020-0200, dated September 21, 2020 (EASA AD 2020-0200): Install the build 7.3 standard software upgrade to the utility management system software in accordance with paragraph 1 and the “Ref. Publications” section of EASA AD 2020-0200, except you are required to comply within 30 days after the effective date of this AD. After updating the software, do not install on that airplane utility management system software that is earlier than version 7.3.
(2) For Group 2 airplanes as defined under the “Definitions” section in EASA AD 2020-0200: As of the effective date of this AD, do not install utility management system software that is earlier than version 7.3 on any airplane.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
