Sikorsky S-58 / H-34 Choctaw Supplemental Type Certificates (STCs)

39 STCs approved for the Sikorsky S-58 / H-34 Choctaw (S-58 / H-34 Choctaw) family · FAA quick reference

Quick reference only — not a compliance record. This list is for research convenience and may be incomplete or out of date. It is not an airworthiness compliance determination. Always verify against the official FAA record, and check directly with the FAA before relying on it. ADs are mandatory; STCs indicate approval for the type (not installation on a specific airframe); SAIBs are advisory.

Supplemental Type Certificates (STCs) approved for the Sikorsky S-58 / H-34 Choctaw type — FAA-approved modifications available for this aircraft family. Approval for the TYPE does not mean a given STC is installed on any individual airframe (that lives in the logbooks/337s).

Document	Title / Subject	Date
SH3319NM	Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, — Precise Flight Inc	2023-04-14
SR04549AT	Conversion of the Pratt & Whitney PT6T-3 to the PT6T-3B configuration — Centerpointe Aerospace	2023-02-21
SH5780NM	Fabrication of Onboard Systems model E-46 cargo hook load weigh system. — Onboard Systems International	2021-10-07

+ 36 more STCs for the Sikorsky S-58 / H-34 Choctaw family.

The complete, searchable Supplemental Type Certificates list — with in-app PDF viewing and a combined download — is part of AeroTell.

See all 39 STCs in the AeroTell app →