N612RM

This airframe, registered in the United States as N612RM, is a 1975-built Sikorsky S-61N Shortsky constructed by Sikorsky Aircraft and carrying manufacturer serial number 61744. The helicopter is owned by the corporation Carson Helicopters, based in Perkasie, PA, US and has been operated from that home base for its commercial rotorcraft work. As a 1975 airframe it represents a long-serving example of the S-61N family and has the legacy configuration and usage profile typical of converted utility/rescue airframes of its era. Registry details list the craft under US registration N612RM and its operational history is characterized by corporate ownership rather than individual private ownership.

The cabin of this Sikorsky S-61N Shortsky is configured to accommodate up to 30 seats, making it suitable for high-density passenger transport, offshore support, or utility missions where large passenger or cargo capacity is required. Avionics fit on this airframe are consistent with the S-61N platform’s typical complement for commercial operators, supporting instrument flight and route structures appropriate to a 450 nm range and cruise speed around 120 kts. Typical mission profiles for N612RM under Carson Helicopters include short- to medium-range shuttles, utility and external-load work, and other regional rotorcraft operations originating from its Perkasie base. Maintenance emphasis on an airframe of this vintage focuses on airframe corrosion inspections, main gearbox and dynamic component overhauls, and adherence to S-61N-specific service bulletins.

The Sikorsky S-61N family occupies a niche for robust medium-lift, multi-role rotorcraft that can carry large numbers of passengers or sizeable cargo loads where fixed-wing alternatives are impractical. Competitors in similar mission roles include older medium twins and newer turbine utility helicopters adapted for multi-passenger carriage. Buyer and charter demand for a 1975 S-61N like N612RM tends to favor operators who value payload and capacity over speed, while resale and maintenance considerations center on lifecycle costs for twin CT58 engines and airframe corrosion management given the airframe’s age.