EASA AD US-2023-08-03
Flight Controls - Ground Spoiler Actuator Hydraulic Hose and Associated Fittings - Replacement
Summary
Federal Aviation Administration Airworthiness Directive 2023-08-03 is a final rule addressing certain Gulfstream Aerospace Corporation Model G-1159A, G-1159B, G-IV, and GIV-X airplanes. This directive requires replacement of the ground spoiler actuator hydraulic hoses and associated fittings to prevent improper hydraulic line connections that could cause unintended asymmetrical spoiler deployment. The AD aims to enhance flight safety by mitigating the risk of loss of control due to this hydraulic issue.
What Changed
This new airworthiness directive introduces mandatory corrective actions to physically prevent improper connection of hydraulic lines to the ground spoiler actuator on the specified Gulfstream models. It incorporates Gulfstream service bulletins detailing the replacement procedures for the hydraulic hoses and fittings. The AD also clarifies compliance timelines and updates cost estimates based on the latest service information.
Why It Matters
This AD is critical for aviation professionals as it addresses a safety risk that could lead to unintended asymmetrical spoiler deployment and potential loss of aircraft control. Operators and maintenance organizations must ensure compliance to maintain airworthiness and avoid accidents. The directive provides clear guidance and timelines, facilitating effective maintenance planning and regulatory adherence.
What To Do
Affected operators must replace the left and right ground spoiler actuator hydraulic hoses and associated fittings according to the specified Gulfstream service bulletins. Compliance is required by June 20, 2023, plus an 18-month window for certain models. Operators should review the AD docket and coordinate with Gulfstream for service information to complete the corrective actions within the mandated timeframe.
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