2024-22209. Airworthiness Directives; DAHER AEROSPACE (Type Certificate Previously Held by SOCATA) Airplanes

Estimated Costs

Action	Labor cost	Parts cost	Cost per product	Cost on U.S. operators
Clean and lubricate left-hand (LH) and right-hand (RH) internal actuator rods	1 work-hour × $85 per hour = $85, per cleaning and lubricating cycle	$0	$85	$68,595 per cleaning and lubricating cycle.
Measure the play for the LH and RH drive nuts	1 work-hour × $85 per hour = $85, per measurement cycle	0	$85 per measurement cycle	$68,595 per measurement cycle.

If, during any proposed measurement for play, no discrepancy is found, operators have the option to replace the LH and RH drive nuts. If, during any proposed measuring for play, any discrepancy is found, the LH and RH drive nuts must be replaced. Replacing the LH and RH drive nuts would be terminating action for the proposed repetitive cleaning, lubricating, and measuring play. The FAA estimates the ( print page 79487) following costs for replacing the LH and RH drive nuts:

On-Condition Costs

Action	Labor cost	Parts cost	Cost per product
Replace drive nuts	4 work-hours × $85 per hour = $340	$200	$540