Airworthiness Directive · Amendment 39-19122 · Auto flight
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to ATR-GIE Avions de Transport Régional Model ATR42-500 and ATR72-212A airplanes, certificated in any category, all manufacturer serial numbers, as specified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Airplanes modified in production by incorporation of Avions de Transport Régional modification 6977 (New Avionics Suite Standard 2).
(2) Airplanes modified in service by incorporation of Avions de Transport Régional Service Bulletin ATR42-31-0091, Revision 02, January 18, 2016, or Avions de Transport Régional Service Bulletin ATR72-31-1092, Revision 03, dated January 18, 2016, as applicable.
We are adopting a new airworthiness directive (AD) for certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72- 212A airplanes. This AD requires revising the airplane flight manual to provide procedures to the flightcrew for operational restrictions affecting in-flight use of the autopilot (AP) or yaw damper (YD) during single source operation. This AD was prompted by flight test evaluations that revealed discrepancies with the YD and AP when in single source operation on certain airplanes. We are issuing this AD to address the unsafe condition on these products.
(1) Within 15 days after the effective date of this AD, revise the Limitations Section, Emergency Procedures section, and Procedures Following Failures section of the ATR-42 and ATR-72 airplane flight manuals (AFMs), as applicable, to include the information in figure 1 to paragraph (g) of this AD or figure 2 to paragraph (g) of this AD, as applicable; inform all flight crews; and thereafter operate the airplane accordingly.
(2) Revising the AFM as specified in paragraph (g)(1) of this AD can be done by inserting a copy of figure 1 to paragraph (g) of this AD or figure 2 to paragraph (g) of this AD, as applicable, into the applicable AFM.
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.
