Airworthiness Directive · Amendment 39-21731 · Navigation
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to all ATR-GIE Avions de Transport Régional Model ATR42-500 and ATR72-212A airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72- 212A airplanes. This AD was prompted by reports indicating that certain Thales global positioning system (GPS) satellite based augmentation system (SBAS) receivers provided, under certain conditions, erroneous outputs on aircraft positions. This AD requires replacing affected GPS SBAS receivers with new, improved receivers, 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.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2021-0013, dated January 13, 2021 (EASA AD 2021-0013).
(1) Where EASA AD 2021-0013 refers to its effective date, this AD requires using the effective date of this AD.
(2) The requirements specified in paragraphs (2) and (3) of EASA AD 2021-0013 do not apply to this AD. Instead, the airplane flight manual (AFM) changes required by AD 2020-08-02 must be removed from the existing AFM before further flight after compliance with all other actions required by this AD.
(3) The “Remarks” section of EASA AD 2021-0013 does not apply to this AD.
Accomplishment of this AD terminates all requirements of AD 2020-08-02 for Model ATR42-500 and ATR72-212A airplanes.
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.
