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

Final Rule Final · effective Published 2025-08-05 Effective 2025-08-05 90 FR 37373 View on federalregister.gov ↗

Affects · Manufacturers · 14 CFR 29

Abstract

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.

Full text

15 paragraphs · 310 words.

[Federal Register Volume 90, Number 148 (Tuesday, August 5, 2025)] [Rules and Regulations] [Pages 37373-37376] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-14779]

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Federal Register / Vol. 90, No. 148 / Tuesday, August 5, 2025 / Rules and Regulations

[[Page 37373]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 29

[Docket No. FAA-2024-2383; Special Conditions No. 29-059-SC]

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

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions.

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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.

DATES: Effective August 5, 2025.

FOR FURTHER INFORMATION CONTACT: Scott Johnson, Mechanical Systems Section, AIR-623, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, Federal Aviation Administration, telephone 202-267-4644; email [email protected].

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