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Public Record · As of May 5, 2026

N47B

Sikorsky S-58T View Type →

Status

Registration Valid

Type

Rotorcraft

Engine

P&W CANADA PT6A-60A

Last Cert Issue

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to SIKORSKY S-58T

Federal Aviation Administration airworthiness directives matched to make and model. Each entry links to the Federal Register publication.

  • Apr 22, 2008

    Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc. Model S-61L; Glacier Helicopter Model CH-3E; Robinson AirCrane, Inc. Model CH-3E, CH-3C, HH-3C and HH-3E; and Siller Helicopters Model CH-3E and SH-3A Helicopters

    This amendment proposes superseding an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S- 61A, D, E, L, N, NM, R, and V helicopters. The existing AD currently requires determining whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations. The existing AD also requires a nondestructive i…

  • Jun 22, 1994

    Airworthiness Directives: Sikorsky Aircraft Model S-58 and S-58T Series Helicopters

    This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Sikorsky Aircraft Model S-58 and S-58T series helicopters. This proposal would require the removal and replacement of the transmission main gear box ring gear (ring gear) within certain time intervals and would establish a retirement life for the ring gear. This…

04 /  Service Difficulty Reports

FAA SDR filings

The FAA does not currently expose a public API for Service Difficulty Reports. We do not back-fill or paraphrase. Search the FAA SDR portal directly →

05 /  Related

More on Sikorsky S-58T in the Atlas

Sikorsky S-58T type page → — 1 registered · 2 ADs · 1 NTSB records

Search the full US registry → · All airworthiness directives → · Accident & safety surface →

06 /  Sources & Methodology

Every fact on this page links to its primary US-government source

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