AD NUMBER: 2019-21-06

PRODUCT: Certain Ipeco Holdings Limited (Ipeco) pilot and co-pilot seats.

ACTION: Final rule

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2017-22-02 for the products listed above.

AD 2017-22-02 required modification and reidentification of the affected seats. This AD continues to require modification and re-identification of the affected seats.

This AD also requires initial and repetitive inspections of the affected tracklock springs and, depending on the findings, replacement of the tracklock springs with a part eligible for installation.

This AD was prompted by reports that the tracklock spring modification required by AD 2017-22-02 does not adequately address the issue of unexpected seat movement during takeoff and landing and the need to add additional seat part numbers (P/Ns) to the applicability.

DATES: This AD is effective December 13, 2019.

COST: The FAA estimates that this AD affects 110 pilot and co-pilot seats installed on, but not limited to, ATR-GIE Avions de Transport Regional (ATR) 42 and ATR 72 airplanes of U.S. registry. The FAA estimates that seats installed on 34 ATR 42 airplanes and seats installed on 21 ATR 72 airplanes will require modification and inspection.

A complete listing of the estimated costs of compliance for this AD on various aircraft can be found at the FMI link below.

FMI: AD