2024-21689. Airworthiness Directives; The Boeing Company Airplanes

Estimated Costs

Action	Labor cost	Parts cost	Cost per product	Cost on U.S. operators
Disconnecting connectors, capping and stowing wires (retained actions from AD 2022-15-06)	3 work-hours × $85 per hour = $255	$0	$255	$79,560.
Disconnecting additional connectors, capping and stowing wires (new proposed action)	3 work-hours × $85 per hour = $255	$0	$255	$79,560.
Determining if affected transorb modules are installed, and replacing or testing affected modules (new proposed action)	Up to 3 work-hours × $85 per hour = $255	Up to $3,668	Up to $3,923	Up to $1,223,976.

The FAA estimates the following costs to do any necessary on-condition actions that would be required based on the results of the proposed testing. The agency has no way of determining the number of aircraft that might need these actions:

On-Condition Costs

Action	Labor cost	Parts cost	Cost per product
Part marking or replacing affected modules	Up to 3 work-hours × $85 per hour = $255	Up to $3,668	Up to $3,923.