2024-15235. Airworthiness Directives; The Boeing Company Airplanes

Estimated Costs

Action	Labor cost	Parts cost	Cost per product	Cost on U.S. operators
Clamshell coupling inspection, per lavatory or galley (retained actions from AD 2023-08-04)	1 work-hour × $85 per hour = $85	$0	$85	$14,025
Safety strap inspection, per lavatory/galley (new proposed action)	2 work-hours × $85 per hour = $170, per lavatory/galley	0	$170, per lavatory/galley	28,050

The FAA estimates the following costs to do any necessary on-condition actions that would be required based on the results of the proposed inspection. 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
Correct installation for clamshell coupling with safety strap that was installed incorrectly	0.25 work-hour × $85 per hour = $21.25	$0	$21.25
Install clamshell coupling 14C34-08C	0.25 work-hour × 85 per hour = 21.25	267	288.25
Install clamshell coupling 14C33-08	0.25 work-hour × 85 per hour = 21.25	47	68.25
Leak test	0.5 work-hour × 85 per hour = 42.50	0	42.50