FAA 2018-20-16

Supersedes but retains requirements of AD 2013-11-12, which mandated inspecting for the correct serial number of a certain hydraulic system accumulator and replacing affected hydraulic system accumulators with new or serviceable accumulators. New AD expands the applicability and requires modifying or replacing certain hydraulic brake system accumulators, as well as revision of the maintenance or inspection program to add life limits for these accumulators.