A Brief History of the Cessna 337 Skymaster
The Cessna 337 Skymaster is one of the most recognizable twin-engine aircraft in general aviation. Introduced in the mid-1960s, the 337 was designed around a centerline thrust configuration, with one engine mounted in the nose and the second in the rear fuselage. This layout reduced asymmetric thrust issues, improved handling during engine-out scenarios, and helped the aircraft develop a reputation for stability and predictable performance.
The 337’s cabin size, endurance, and wide visibility made it useful across a range of missions including surveillance, mapping, air ambulance, and law enforcement patrol. Both civil and military operators adopted the platform, and many airframes continue flying today thanks to ongoing support from the aftermarket community. As the fleet ages, however, some original components have become difficult or impossible to source, increasing the need for modern, certified replacements that preserve long-term airworthiness.
One of the parts most affected by obsolescence is the Cessna 337 seat lock pin, a safety-critical component tied directly to proper seat-track engagement. Failures or non-conforming pins can create a serious hazard during high-acceleration events, turbulence, or normal takeoff and landing operations.
The Need for a Modern, Certified Seat Lock Pin
The Airworthiness Directive addressing seat-roller engagement requires operators to maintain seating systems that meet strict dimensional and mechanical criteria. For many 337 owners, the challenge is not understanding the requirement but sourcing a replacement pin that conforms to the mandatory standard. Legacy components are often worn, unavailable, or out of tolerance, leading to recurring compliance issues and unnecessary downtime.
A modern, precision-manufactured solution is essential for returning the aircraft to service with confidence. That is where iAERO’s certified replacement comes in.
iAERO STC SA24-18
A Modern, Approved Replacement for an Obsolete Part
STC SA24-18 provides a fully certified, engineering-backed replacement for the original Cessna 337 seat lock pin. Developed under iAERO’s Design Approval Organization, the component restores correct seat-track locking performance and satisfies all technical requirements outlined in the applicable Airworthiness Directive.
Each pin is produced to modern aerospace manufacturing standards, ensuring consistent fit, durability, and repeatable installation results. Operators gain a reliable, long-term replacement rather than relying on aging legacy hardware or unsupported replicas.
Key Benefits
Certified replacement. Fully approved under STC SA24-18 and compliant with the applicable AD.
Precision engineered. Manufactured to modern aerospace tolerances for strength, fit, and reliability.
Drop-in solution. Direct replacement for the obsolete OEM pin with no aircraft modifications required.
Improved safety. Restores proper seat-track engagement and reduces the risk of uncommanded seat movement.
Full product support. Backed by iAERO documentation, engineering guidance, and responsive technical support.
A Simple Upgrade That Protects Your Flight Crew
A non-conforming or worn seat lock pin represents a small component with significant safety implications. iAERO’s certified solution provides a permanent, dependable replacement that keeps Cessna 337 operators compliant and reduces operational risk throughout the remaining service life of the aircraft.
Direct replacement. AD compliant. Reliable. Fully supported.
Keep your 337 fleet flying safely with a certified part you can count on, contact us today!