N2300Z

01 /  Registration

Filed with the Federal Aviation Administration

Every cell below is a literal field from the FAA Aircraft Registry. Click any value to open the FAA registry record for N2300Z.

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to SIKORSKY S-55

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

• Jul 5, 2006

  Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop, and TSE331-3U Model Turboshaft Engines

  The FAA is adopting a new airworthiness directive (AD) for certain Honeywell International Inc. TPE331 series turboprop, and TSE331-3U model turboshaft engines. This AD requires implementing a new flight cycle counting method for first, second, and third-stage turbine rotors used in aircraft that make multiple takeoffs and landings without an engine shutdow…

  Atlas AD 06-5929 → Federal Register ↗

• Feb 23, 2006

  Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop, and TSE331-3U Model Turboshaft Engines

  The FAA proposes to adopt a new airworthiness directive (AD) for certain Honeywell International Inc. TPE331 series turboprop, and TSE331-3U model turboshaft engines. This proposed AD would require implementing a new flight cycle counting method for first, second, and third-stage turbine rotors used in aircraft that make multiple takeoffs and landings witho…

  Atlas AD E6-2574 → Federal Register ↗

• Dec 16, 2002

  Airworthiness Directives; Honeywell International Inc. TPE331-3, -5, -6, -8, -10, and -11 Series Turboprop and TSE331-3 Series Turboshaft Engines

  This amendment adopts a new airworthiness directive (AD), that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. This amendment requires removing weld repaired fi…

  Atlas AD 02-31172 → Federal Register ↗

• Oct 22, 2002

  Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop and TSE331-3U Series Turboshaft Engines

  This amendment adopts a new airworthiness directive (AD), that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Engine Division, Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331 series turboprop and TSE331-3U series turboshaft engines. This amendment requires replacing second stage tur…

  Atlas AD 02-26790 → Federal Register ↗

• Jul 25, 2002

  Airworthiness Directives; Honeywell International Inc. TPE331-3, −5, −6, −8, −10, and −11 Series Turboprop and TSE331-3 Series Turboshaft Engines

  The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. This proposa…

  Atlas AD 02-18816 → Federal Register ↗

• Feb 19, 2002

  Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop and TSE331-3U Series Turboshaft Engines

  The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Engine Division, Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331 series turboprop and model TSE331-3U series turboshaft engines. This pr…

  Atlas AD 02-3877 → Federal Register ↗

• Feb 26, 1998

  Airworthiness Directives; AlliedSignal Inc. TPE331 Series Turboprop and TSE331 Turboshaft Engines

  This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc., (formerly Garrett Engine Division, Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331 series turboprop and TSE331 turboshaft engines, that requires replacement or radiographic inspection, and replacement, if necessary, of certain th…

  Atlas AD 98-3798 → Federal Register ↗

• Jul 31, 1997

  Airworthiness Directives; AlliedSignal Inc. TPE331 Series Turboprop and TSE331 Turboshaft Engines

  This document proposes the adoption of a new airworthiness directive (AD) that is applicable to AlliedSignal Inc., (formerly Garrett Engine Division, Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331 series turboprop and TSE331 turboshaft engines. This proposal would require replacement or radiographic inspection, and re…

  Atlas AD 97-20193 → Federal Register ↗

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-55 in the Atlas

Sikorsky S-55 type page → — 3 registered · 8 ADs · 3 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

• FAA Aircraft Registry →

  Refreshed May 5, 2026

  Available

• NTSB CAROL →

  Refreshed May 5, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed May 5, 2026

  Available

• FAA Service Difficulty Reports →

  Refreshed May 5, 2026

  Unavailable

We render only what the agency publishes. Found a factual error? Report it → We acknowledge within 5 business days and resolve within 14.