2024-14936. Airworthiness Directives; Pratt & Whitney Engines

Estimated Costs

Action	Labor cost	Parts cost	Cost per product	Cost on U.S. operators
ECI of the HPT 2nd stage turbine hub assembly	8 work-hours × $85 per hour = $680	$0	$680	$289,000
Visual Inspection of the HPT 2nd stage blade assembly	8 work-hours × $85 per hour = $680	0	680	289,000
Dimensional shadowgraph inspection of HPT 2nd stage blade assemblies	8 work-hours × $85 per hour = $680	0	680	289,000

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

On-Condition Costs

Action	Labor cost	Parts cost	Cost per product
Replace HPT 2nd stage turbine hub assembly	0 work-hours × $85 per hour = $0	$456,000	$456,000
Replace HPT 2nd stage blade assembly	0 work-hours × $85 per hour = $0	17,000	17,000