5 Aug 2025

🚁Special Conditions for Sikorsky S-61 Helicopters' Safety Standards

Special Conditions: Sikorsky Model S-61A, S-61L, and S-61N (Including Those Modified by Supplemental Type Certificate (STC) No. SH640NE) Helicopters; Overload Protection Device in a Hoist

Summary

These special conditions are issued for Sikorsky Aircraft Corporation and Sikorsky Aircraft (Sikorsky) Model S-61A, S-61L, and S- 61N helicopters. These helicopters, as modified by Carson Helicopters Inc. (Carson), will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category rotorcraft. This design feature is an overload protection device (OLPD) installed in the hoist. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Agencies

  • Transportation Department
  • Federal Aviation Administration

Business Impact ?

$$$ - High

This regulatory text sets special conditions for the Sikorsky Model S-61 helicopters regarding the implementation of an overload protection device in hoists, impacting compliance and safety standards for manufacturers. It introduces additional requirements that businesses like Sikorsky and Carson need to adhere to, influencing operational costs and design processes.

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