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Tue, Jul 09, 2019

AD: Bombardier, Inc., Airplanes

AD NUMBER: 2019-12-03

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

ACTION: Final Rule.

SUMMARY:  This AD was prompted by a determination that new and more restrictive airworthiness limitations are necessary for operational checks of the landing gear alternate extension system (AES).

This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new and more restrictive airworthiness limitations.

DATES: This AD is effective August 7, 2019.

COST: The FAA estimates that this AD affects 536 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

The FAA has determined that revising the existing maintenance or inspection program takes an average of 90 work-hours per operator, although the FAA recognizes that this number may vary from operator to operator.

In the past, the FAA has estimated that this action takes 1 work-hour per airplane. Since operators incorporate maintenance or inspection program changes for their affected fleet(s), the FAA has determined that a per-operator estimate is more accurate than a per-airplane estimate. Therefore, the FAA estimates the total cost per operator to be $7,650 (90 work-hours x $85 per work-hour).

FMI: AD

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