# Sikorsky S-55C - Type: Aircraft model (FAA registry) - Registry code: 8141606 - Manufacturer (registry): SIKORSKY - Model: S-55C - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 12 - Weight class: Up to 12,499 lb - Cruise speed: 85 mph - Certification: Type certificated - Data sheet: [TCDS 1H4](https://openairdocs.org/tcds/1H4) (OpenAirDocs) - Holder: Centerpointe Aerospace Inc. - Registered aircraft: 0 - Page: https://openairdocs.org/model/sikorsky-s-55c Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 66-04-03](https://openairdocs.org/ad/66-04-03): Main Rotor Blades · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 3 more. Effective Apr 27, 1976 - [AD 75-22-12](https://openairdocs.org/ad/75-22-12): Inflight Power Loss · Sikorsky S-55, S-55B and S-55C with STC SH125WE or SH127WE. Effective Oct 31, 1975 - [AD 75-04-02](https://openairdocs.org/ad/75-04-02): Main Rotor Spindles · Orlando Helicopter Airways CH-19E, H-19A, H-19D and 8 more. Effective Feb 19, 1975 - [AD 73-16-01](https://openairdocs.org/ad/73-16-01): Engine Turbine Failure · Sikorsky S-55, S-55B and S-55C with STC SH127WE. Effective Jul 31, 1973 - [AD 70-12-04](https://openairdocs.org/ad/70-12-04): Main Rotor Shaft Cracks · Sikorsky S-55, S-55B, S-55C and 1 more. Effective Jun 17, 1970 - [AD 67-29-07](https://openairdocs.org/ad/67-29-07): Azimuth Control Rod Assembly · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more. Effective Nov 3, 1967 - [AD 67-17-06](https://openairdocs.org/ad/67-17-06): Pylon Lower Ring · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more. Effective May 21, 1967 - [AD 65-08-02](https://openairdocs.org/ad/65-08-02): Main Rotor Blades · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 11 more. Effective Apr 9, 1965 - [AD 63-05-02](https://openairdocs.org/ad/63-05-02): Main Rotor Blades · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more. Effective Mar 6, 1963 - [AD 60-13-04](https://openairdocs.org/ad/60-13-04): Rotor Shank Rod · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-51 and 3 more - [AD 56-23-03](https://openairdocs.org/ad/56-23-03): Horizontal Hinge Pin Assembly · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 56-16-03](https://openairdocs.org/ad/56-16-03): Main Rotor Blade Inspection · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-51 and 3 more - [AD 55-25-04](https://openairdocs.org/ad/55-25-04): Tail Cone Skin Reinforcements · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 54-20-02](https://openairdocs.org/ad/54-20-02): Support Assembly Cracks · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 54-19-02](https://openairdocs.org/ad/54-19-02): Servo Safety Clip · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 54-16-01](https://openairdocs.org/ad/54-16-01): Main Transmission · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 54-13-01](https://openairdocs.org/ad/54-13-01): Star Assembly Bolt Replacement · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more - [AD 54-01-03](https://openairdocs.org/ad/54-01-03): Fuel Strainer Screen · Orlando Helicopter Airways HRS-1/CH-19, HRS-3/H-19B, S-55 and 2 more Historical (superseded or no longer in force): - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 ## Registered aircraft None registered with this model now. ## NTSB investigations (3) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ATL88LA190](https://openairdocs.org/ntsb/ATL88LA190), Jun 7, 1988: Sikorsky S-55C (N883), Coaling, AL, substantial damage - [NTSB FTW87DRD03](https://openairdocs.org/ntsb/FTW87DRD03), Feb 3, 1987: Sikorsky S-55C (N418A), Kurthwood, LA, substantial damage - [NTSB CHI79FEG21](https://openairdocs.org/ntsb/CHI79FEG21), Jul 30, 1979: Sikorsky S-55C (N509Y), Chillicothe, OH, destroyed ## FAA accident and incident reports (2) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 19870203001589A](https://openairdocs.org/incident/19870203001589A), Feb 3, 1987: Skrsky S55C (N418A), Kurthwood, LA, Substantial damage. The engine failed and the helicopter auto rotated into trees. Water found in fuel. - [Accident 19790730019359A](https://openairdocs.org/incident/19790730019359A), Jul 30, 1979: Skrsky S55C (N509Y), Chillicothe, OH, Destroyed. Helicopter hit wire while spraying a field. ## STCs that may be installed (OpenAirDocs) (17) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SA01282NY](https://openairdocs.org/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 - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SH51WE](https://openairdocs.org/stc/SH51WE): Installation of George M. Adams Model DGA-2000 wheel assembly. Skybound Manufacturing Inc - [STC SH127WE](https://openairdocs.org/stc/SH127WE): Installation of AiResearch TSE-331-3U-303N engine and related changes. Whisper Jet Inc - [STC SR09041RC](https://openairdocs.org/stc/SR09041RC): Installation of a fuselage left cabin door. Federico Helicopters Inc - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SH770NW](https://openairdocs.org/stc/SH770NW): Installation of a weighing system. Onboard Systems - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SH150WE](https://openairdocs.org/stc/SH150WE): Installation of Chadwick electronic weighing system C-46. Onboard Systems - [STC SH271WE](https://openairdocs.org/stc/SH271WE): Installation of cabin-mounted spray tank and external spray booms for agricultural purposes. Helitec Corporation - [STC SH1072SO](https://openairdocs.org/stc/SH1072SO): Installation of dust boot retainer rings (in rotor head dampers). Orlando Heli Airways Inc - [STC SH71EA](https://openairdocs.org/stc/SH71EA): South Wind heater 8259-A. Laboratory for Electronics Inc --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.