Federal Register #FAA20268800

FAA Airworthiness Directive for Airbus A350 Hydraulic Pump Failures

The Federal Aviation Administration (FAA), under the Department of Transportation, is proposing a new airworthiness directive (AD) for Airbus SAS Model A350-941 and A350-1041 airplanes to address hydraulic engine driven pump (EDP) failures. - Government Buyer: - Federal Aviation Administration (FAA), Aircraft Certification Service - OEM Highlight: - Airbus SAS is the primary Original Equipment Manufacturer (OEM) involved - Products and Services Requested: - Replacement of affected hydraulic engine driven pumps (EDPs), specifically referencing EDP P/N 5309807 - Modification of the hydraulic monitoring and control application (HMCA), including software update to S6.0 or later - Revision of the airplane flight manual (AFM) to incorporate updated safety information - Completion of concurrent avionics system upgrades as required - Scope and Quantities: - Applies to 36 U.S.-registered Airbus A350-941 and A350-1041 aircraft - Unique or Notable Requirements: - Compliance with European Union Aviation Safety Agency (EASA) AD 20260074 is mandatory - Prohibits installation of affected EDP parts and certain HMCA software versions - Addresses safety concerns related to overheating and potential ignition hazards from hydraulic pump failures - Estimated cost per aircraft is up to $16,368

Description

The FAA proposes a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and A350-1041 airplanes due to reports of failure of hydraulic engine driven pumps (EDPs) of the standard EDP-06. The proposed AD requires modifying the hydraulic monitoring and control application (HMCA), accomplishing applicable concurrent requirements, revising the airplane flight manual (AFM), and replacing affected parts depending on airplane configuration. It also prohibits installation of affected parts and certain HMCA software to address the unsafe condition. Comments on the proposal are due by October 26, 2026.

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