AD NUMBER: 2020-02-22

PRODUCT: All Airbus SAS Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes); and Model A310 series airplanes.

ACTION: Final rule

SUMMARY: This AD was prompted by a determination that new tests are necessary to address potential air leaks in the reservoir air pressurization lines.

This AD requires repetitive pressurization tests of the reservoir air pressurization lines for pipe rupture and leaks, and repair or replacement if necessary, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference.

DATES: This AD is effective March 19, 2020

COST: The FAA estimates that this AD affects 123 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

• Required Actions: 2 work-hours × $85 per hour = 170 per inspection cycle per airplane.
• Estimated Costs of On-Condition Actions: 3 work-hours × $85 per hour = $255 per airplane.

FMI: AD