SIKORSKY S-55B

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered SIKORSKY S-55B aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving SIKORSKY S-55B aircraft

7 event(s) on file. Showing the most recent 7.

• Jun 2, 2024

  N2302F

  Benton City, Washington

  NTSB Docket →

• Oct 12, 2012

  N443FD

  Yorktown, New York

  NTSB Docket →

• Jul 25, 2011

  N5663

  Chelan, Washington Fatal

  NTSB Docket →

• Jul 20, 1984

  N24111

  RICHEY, Montana

  NTSB Docket →

• Aug 27, 1980

  N31611

  TITUSVILLE, Florida Minor

  NTSB Docket →

• Sep 26, 1975

  N17376

  EDEN PRAIRIE, Minnesota

  NTSB Docket →

• Mar 22, 1974

  N5663

  CORVALLIS, Oregon

  NTSB Docket →

03 /  Airworthiness Directives

FAA directives applicable to SIKORSKY S-55B

No matching airworthiness directives are on file for this make and model in the Federal Register.

04 /  Type Certificate Data Sheets

FAA TCDS for SIKORSKY S-55B

The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.

• 1H4 Historical Rev 32 · 12/29/1989

  Sikorsky Aircraft Corporation

  Models: S-55C, S-55, S-55B

  Atlas TCDS → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for SIKORSKY S-55B

33 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

• 04/14/2023

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 12/17/2020

  STC SR02704SE

  Installation and maintenance of the Sunspot 36 and 46 series lights

  AeroLED's Holdings LLC

  Atlas STC → DRS ↗

• 12/17/2020

  STC SR02704SE

  Installation and maintenance of the Sunspot 36 and 46 series lights

  AeroLEDS LLC

  Atlas STC → DRS ↗

• 06/04/2020

  STC SA02268CH (PAGE 5)

  Installation of Airwolf Filter Corp. Air Oil Separator

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 05/19/2020

  STC SH3319NM (1 OF 2)

  Installation of Precise Flight Pulselite Control Unit in the\nLanding /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 05/29/2019

  STC SR00359BO

  Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.

  Whelen Aerospace Technologies

  Atlas STC → DRS ↗

• 12/20/2017

  STC SA02268CH (PAGE 5)

  Installation of Airwolf Filter Corp. Air Oil Separator

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 12/20/2017

  STC SA01282NY

  Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 12/29/2016

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 11/28/2016

  STC SR00359BO

  Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.

  Whelen Engineering Co Inc

  Atlas STC → DRS ↗

• 01/14/2015

  STC SR02394AK

  Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system

  Seaplanes North LLC

  Atlas STC → DRS ↗

• 06/09/2014

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 07/25/2013

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 10/31/2012

  STC SA01282NY

  Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 10/17/2012

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 05/23/2012

  STC SR02394AK

  Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system

  Floats Alaska LLC

  Atlas STC → DRS ↗

• 03/15/2012

  STC SR02394AK

  Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system per Installation Instructions LED03-20R, Rev. IR, dated October 27, 2010.

  Floats Alaska LLC

  Atlas STC → DRS ↗

• 02/21/2012

  STC SH3319NM

  Installation of Precise Pulselite Control System

  Precise Flight Inc

  Atlas STC → DRS ↗

• 08/28/2011

  STC SA02268CH (PAGE 5)

  Installation of Airwolf Filter Corp. Air Oil Separator

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 12/09/2009

  STC SA2693NM (PAGE 2)

  Installation of Electronics International digital volt/amp gauges and accessories.

  Electronics International Inc.

  Atlas STC → DRS ↗

• 05/12/2008

  STC SR02562CH

  ONE ONLY STC; S/N 55907: Installation of C&D Associates Combustion Heater Kit 28 (P/N CD14190K28)

  C & D Associates Inc

  Atlas STC → DRS ↗

• 11/07/2003

  STC SH3319NM

  Installation of Precise Pulselite Control Unit in the Landing/Taxi/Recognition Visual Control Light System.

  Precise Flight Inc

  Atlas STC → DRS ↗

• 06/25/2003

  STC SH51WE

  Installation of George M. Adams Model DGA-2000 wheel assembly.

  Skybound Manufacturing Inc.

  Atlas STC → DRS ↗

• 12/03/2001

  STC SH3319NM

  Installation of Precise Pulselite Control Unit in the Landing/Taxi/Recognition Visual Control Light System.

  Precise Flight Inc

  Atlas STC → DRS ↗

• 10/13/2000

  STC SH127WE

  Installation of AiResearch TSE-331-3U-303N engine and related changes.

  Whisper Jet Inc.

  Atlas STC → DRS ↗

• 09/15/1995

  STC SR09041RC

  Installation of a fuselage left cabin door.

  Federico Helicopters Inc.

  Atlas STC → DRS ↗

• 03/09/1993

  STC SA1626NM Page 2

  Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)

  Electronics International

  Atlas STC → DRS ↗

• 08/02/1990

  STC SH770NW

  Installation of a weighing system.

  Onboard Systems

  Atlas STC → DRS ↗

• 10/13/1989

  STC SA4302NM (PAGE 2)

  Installation of Electronics Int'l digital automatic engine analyzer.

  Electronics International

  Atlas STC → DRS ↗

• 04/26/1984

  STC SH1599SO

  Removal of main transmission oil cooler blower and associated parts.

  Orlando Heli Airways Inc

  Atlas STC → DRS ↗

+ 3 more STCs on file

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for SIKORSKY S-55B

05 /  Aircraft of this type

All 9 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

05 /  Sources & Methodology

Every count traces back to a primary US-government source

• FAA Aircraft Registry →

  Refreshed Apr 27, 2026

  Available

• NTSB CAROL →

  Refreshed Apr 27, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed Apr 27, 2026

  Available

We render counts and lists as the agency publishes them. Read the methodology →