# Sikorsky S55B

- Type: Aircraft model (FAA registry)
- Registry code: 8141603
- Manufacturer (registry): SIKORSKY
- Model: S55B
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 12
- Weight class: Up to 12,499 lb
- Cruise speed: 78 mph
- Certification: Type certificated
- Data sheet: [TCDS 1H4](https://openairdocs.org/tcds/1H4) (OpenAirDocs)
- Holder: Centerpointe Aerospace Inc.
- Registered aircraft: 3
- Page: https://openairdocs.org/model/sikorsky-s55b

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 (3)

- [N1255T](https://openairdocs.org/aircraft/N1255T): [Sierra Aeronautics LLC](https://openairdocs.org/faa-owner/SIERRA%20AERONAUTICS%20LLC), [Franklin, KY](https://openairdocs.org/faa-place/KY/Franklin), built 1954, S/N 55607
- [N616Z](https://openairdocs.org/aircraft/N616Z): [Sierra Aeronautics LLC](https://openairdocs.org/faa-owner/SIERRA%20AERONAUTICS%20LLC), [Franklin, KY](https://openairdocs.org/faa-place/KY/Franklin), built 1957, S/N 57-1616
- [N855TC](https://openairdocs.org/aircraft/N855TC): [Sierra Aeronautics LLC](https://openairdocs.org/faa-owner/SIERRA%20AERONAUTICS%20LLC), [Franklin, KY](https://openairdocs.org/faa-place/KY/Franklin), built 1956, S/N 551005

## 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 WPR11LA356](https://openairdocs.org/ntsb/WPR11LA356), Jul 25, 2011: Sikorsky S-55B (N855TC), Brewster, WA, substantial damage. Probable cause: The pilot did not maintain main rotor rpm while hovering in gusting wind conditions.
- [NTSB WPR09LA371](https://openairdocs.org/ntsb/WPR09LA371), Jul 24, 2009: Sikorsky S-55 (N1255T), Chelan, WA, substantial damage. Probable cause: Failure of a seal in the hydraulic system resulting in a loss of hydraulic pressure while maneuvering at low altitude.
- [NTSB DEN72DQA12](https://openairdocs.org/ntsb/DEN72DQA12), Jul 5, 1971: Sikorsky S-55B (N455V), Pecos, NM, substantial damage

## FAA accident and incident reports (4)

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 20110725015669A](https://openairdocs.org/incident/20110725015669A), Jul 25, 2011: Sikorsky S55B (N855TC), Brewster, WA, Minor damage. Individual was conducting cherry drying (hover oge) when wind gust pushed him towards a power line. Pilot pulled pitch to clear line. RPM bled off. After…
- [Incident 20100624038849I](https://openairdocs.org/incident/20100624038849I), Jun 24, 2010: Sikorsky S55D (N855TC), Bridgeport, WA, Minor damage. During low level hover cherry drying, pilot let helicopter drift into a wind machine and one blade of the helicopter hit the propeller of the wind machine.…
- [Accident 20090724012789A](https://openairdocs.org/incident/20090724012789A), Jul 24, 2009: Skrsky S55B (N1255T), Chelan, WA, Substantial damage. (-23) During cherry-drying hover over orchard, lost hydraulic power, pulled and cleared orchard, selected near-by vacant field and executed precautionary…
- [Accident 19750704020349A](https://openairdocs.org/incident/19750704020349A), Jul 4, 1975: Orlhel H19ASKRSKY (N455V), CA, Substantial damage

## STCs that may be installed (OpenAirDocs) (18)

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 SR02562CH](https://openairdocs.org/stc/SR02562CH): Installation of C&D Associates Combustion Heater Kit 28 (P/N CD14190K28). Hartzell Engine Technologies, LLC
- [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 SH1599SO](https://openairdocs.org/stc/SH1599SO): Removal of main transmission oil cooler blower and associated parts. Orlando Heli Airways Inc
- [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 SH125WE](https://openairdocs.org/stc/SH125WE): Installation of AiResearch TSE-331-3U-303N engine and related changes. (Limited to serial number 55607). Aviation Specialties, Inc

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Sikorsky S-55B](https://openairdocs.org/model/sikorsky-s-55b): 9 registered aircraft, registry code 8141604

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