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FAA Approves Turbocharger Clamp After Widespread Demand

FAA Approves Redesigned Turbocharger Clamp Amid Industry Demand
Addressing a Longstanding Safety Concern
Since the 1970s, the connection between turbochargers and exhaust systems in general aviation aircraft has presented persistent safety challenges. The junction, secured by a component known as a v-band coupling, has been prone to failures that allow hot exhaust gases to escape into the engine cowling. Such incidents have occasionally resulted in engine damage or even in-flight fires. The vulnerability of the v-band coupling, particularly at its spot welds or riveted joints, has been attributed to exposure to heat and vibration.
In response to these risks, the Federal Aviation Administration (FAA) has issued multiple airworthiness directives (ADs) over the years targeting various aircraft makes and models. In 2023, the FAA introduced AD 2023-09-09, which imposed strict life limits on these components: a 500-hour limit for spot-welded, multi-segment exhaust tailpipe v-band couplings and a 2,000-hour limit for riveted and single-piece units. The directive also mandated inspections before these thresholds were reached. This measure affected approximately 41,000 turbocharged general aviation aircraft and engines, underscoring the widespread nature of the issue.
Supply Chain Challenges and Interim Measures
The implementation of the 2023 directive quickly revealed a critical shortage in the supply of replacement parts. Many aircraft were grounded as owners struggled to obtain the necessary components to comply with the new regulations. Continental Aerospace Technologies provided temporary relief through an alternative method of compliance (AMOC), granting some operators extended deadlines. However, this solution merely delayed the underlying problem rather than resolving it.
Introduction of the AeroForce V-Band Clamp
In response to mounting industry pressure, Hartzell Engine Technologies applied its expertise in exhaust systems to develop a new solution. On February 27, the FAA approved Hartzell’s AeroForce V-Band Clamp for use in both Continental and Lycoming engines. This redesigned clamp features a unique construction that reduces the number of welds and rivets, incorporating a braided wire cable and floating retainer to enhance durability and simplify installation. According to Hartzell, the AeroForce clamp eliminates the recurring inspection and life limit requirements imposed by the 2023 directive on spot-welded couplings.
Implications for the Aviation Industry
The FAA’s approval of the AeroForce clamp is expected to have significant implications for the aviation sector. Operators now have access to a certified replacement that addresses a decades-old safety concern while promising increased operational efficiency and reduced maintenance burdens. This development is likely to influence market dynamics, encouraging competitors to adopt similar technologies or invest in alternative solutions to maintain their market positions.
Industry observers anticipate that the focus will remain on the safety and cost-saving benefits of the new clamp. As Hartzell’s innovation sets a new standard, other manufacturers may accelerate efforts to develop comparable products, further enhancing safety and reliability across the sector.
A Hartzell spokesperson noted, “Operators have been managing legacy design issues, inspection burdens, and limited parts availability for some time.” With the FAA’s approval, the aviation community stands to benefit from improved safety, streamlined operations, and renewed confidence in turbocharged aircraft systems.

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