AD NUMBER: 2018-11-09

PRODUCT: Certain Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL600-2D15 (Regional Jet Series 705), and Model CL-600-2D24 (Regional Jet Series 900) airplanes.

ACTION: Final Rule.

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2014-02-01, which applied to the aircraft listed above.

AD 2014-02-01 required repetitive inspections of the rudder travel limiter (RTL) return springs and primary actuator, and corrective actions if necessary; and replacement of certain RTL return springs.

This AD requires an inspection of the RTL return springs for signs of chafing; an inspection of the casing of the primary actuator for signs of chafing or missing paint; replacement of the RTL return springs; and an inspection of the lugs of the RTL limiter arm assembly for cracks, and modification or replacement, as applicable; and applicable corrective actions.

This AD also adds airplanes to the applicability.

This AD was prompted by reports that when installing the RTL return springs, the RTL limiter arm assembly lug(s) can become deformed.

DATES: This AD is effective July 10, 2018.

COST: The FAA estimates that this AD affects 544 airplanes of U.S. registry. The costs of compliance are estimated as follows:

• Required Actions - $4,320 per aircraft for 16 hours labor

FMI: AD