AD NUMBER: 2019-12-09

PRODUCT: Certain part-numbered Rockwell Collins, Inc. (Rockwell Collins) FDSA-6500 flight display system applications installed on airplanes.

ACTION: Final Rule; request for comments.

SUMMARY: This AD imposes operating limitations on the traffic collision avoidance system (TCAS) by revising the Limitations section of the airplane flight manual (AFM) or AFM supplement (AFMS) and installing a placard on each aircraft primary flight display.

This AD was prompted by a conflict between the TCAS display indications and aural alerts that may occur during a resolution advisory (RA) scenario.

DATES: This AD is effective July 23, 2019. Comments must be received by August 22, 2019.

COST: The FAA estimates that this AD affects 932 FDSA-6500 flight display system applications installed on 311 airplanes worldwide. The number of FDSA-6500 applications installed on airplanes on the U.S. Registry is unknown. Operators may incur the following costs in order to comply with this AD:

• Revise the Limitations section of the AFM or AFMS: .5 work-hour × $85 per hour = $42.50 per airplane.
• Fabricate and install a placard: .5 work-hour × $85 per hour = $42.50 per airplane. Parts cost negligible.

FMI: AD