FAA-PMA Turbo Exhaust Clamp for Lycoming TIO / TEO / LTO Series Engines

The AeroForce 490127-0000 V-Band Clamp is an FAA-PMA approved replacement for Lycoming turbocharged exhaust systems, including TIO-540, TEO-540, LTO-360, and related applications.

This clamp secures the exhaust-to-turbocharger flange connection, maintaining a tight, continuous seal in high-heat turbo environments. Proper sealing is critical to prevent exhaust leakage, carbon monoxide intrusion, turbocharger inefficiency, and potential engine power loss.

Following AD 2023-09-09, many spot-welded V-band clamps are subject to a 500-hour life limit or recurring 100-hour / 6-month inspections. The Hartzell PMA clamp is not subject to this AD, providing a long-term replacement option for Lycoming operators seeking reduced compliance burden.

Replace the clamp if any of the following conditions are found:

• - Cracked or deformed T-bolt
• - Uneven band gap or clamp distortion
• - Evidence of exhaust leakage at turbo flange
• - Loss of proper torque retention

Note: Inspect at each 100-hour, annual, or condition inspection per Hartzell Engine Technologies
Service Information AF3003

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