Airworthiness Directives: General Electric Company Engines

United Airlines Engineering supports the proposed rule but requests clarification on the eligibility of main fuel pumps for installation. They specifically ask if pumps that complied with GE Service Bulletins but were not overhauled during the same shop visit should be considered eligible.

ANA is requesting specific modifications and clarifications to the proposed Airworthiness Directive regarding General Electric Company engines. They argue that the AD should target the MFP level specifically for units with overhaul histories, clarify the definition of "no prior service history," and remove unnecessary overhaul requirements for eligible parts.

Alaska Airlines requests clarifying language in the Airworthiness Directive to exempt Main Fuel Pumps (MFPs) that have never undergone a shop visit or repair from the required removal. They argue that because the issue stems from incorrect torque measurements during repair/reassembly, new production pumps without service history are not affected.

UPS Airline is requesting specific wording changes to the Airworthiness Directive to clarify which main fuel pumps are eligible for installation. They argue that the current language is too restrictive regarding "prior service history" and "overhaul" requirements, and they propose more precise language based on repair history and specific service bulletins.

Lufthansa Technik AG requests that the FAA expand the scope of the proposed Airworthiness Directive to include repaired Main Fuel Pumps (MFPs) that have undergone specific screw replacements. They argue that because these repairs are traceable via specific Service Bulletins, repaired units should be considered eligible for installation alongside new and overhauled units.

The commenter is seeking clarification on a discrepancy between the proposed Airworthiness Directive's definition of "part eligible for installation" and the service criteria provided by Woodward, Inc. regarding thrust bearing screws. They are asking for confirmation on which method of determination will take precedence once the AD becomes effective.