AD NUMBER: 2019-25-11

PRODUCT: Certain Viking Air Limited Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes.

ACTION: Final rule

SUMMARY:  This AD was prompted by reports of cracks on the wing lower skin under the drag angle at a certain wing station (WS).

This AD requires a one-time inspection of the wing lower skin under the drag angle at a certain WS to determine if a certain repair or modification has been accomplished; repetitive visual inspections of certain fuselage structures; repetitive eddy current inspections of the front spar along a certain WS reference line, the drag angle, and all fastener holes; repetitive structural gap checks of a certain surface; and corrective actions if necessary.

This AD also requires replacing certain rivets with certain fasteners, and corrective actions if necessary.

DATES: This AD is effective February 10, 2020.

COST: The FAA estimates that this AD affects 4 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

• Up to 48 work-hours × $85 per hour = Up to $4,080 per aircraft.

FMI: AD