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Sikorsky S-55

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Aircraft model · Rotorcraft · Rotorcraft · registry code 8141602

Manufacturer (registry)
SIKORSKY
Model
S-55
Registry code
8141602
Registered
3 aircraft
Type
Rotorcraft
Engines
1 · Turbo-shaft
Seats
12
Weight class
Up to 12,499 lb
Cruise speed
85 mph
Certification
Type certificated
Data sheet
TCDS1H4
Holder
Centerpointe Aerospace Inc.

Model codes come from the FAA registry’s reference file. ADs are matched to them by model name and maker.

On this page

Aircraft by year built · 31

1942Registered nowDeregistered2026

Airworthiness directives that may apply · 20

ADs whose products match this airframe model. Each AD’s applicability may narrow it by serial number, part number or configuration.

1963In forceSuperseded2026
See all 21 ADs
Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('8141602'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Registered aircraft · 3

N111VAWeeks Kermit A · Polk City, FLBuilt 1953 · S/N 55433N2300ZProvost Michael A · Jefferson, GABuilt 1954 · S/N 55750N752ASierra Aeronautics LLC · Franklin, KYBuilt 1957 · S/N 55981
Query with SQL
duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
  WHERE aircraft_model_code IN ('8141602')
  ORDER BY n_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB investigations · 8

Aircraft matched to this model through the registry, by N-number and event date, checked against the reported serial number, make and model.

First occurrence, 1982 to 2007

Of 3 cases with NTSB’s older coding, defined in its coding manual.

NTSB LAX06LA280Accident · No injuriesLimited investigationFinal reportSikorsky S-55 · Paramount, CAthe loss of engine power for undetermined reasons. A factor was the unsuitable terrain for the landing.Aug 26, 2006 · N111VA · Substantial damageNTSB LAX02TA267Accident · No injuriesFinal reportSikorsky S-55T · Lytle Creek, CAFailure of the hydraulic system due to contamination in the hydraulic fluid, which resulted in an in-flight loss of control.Aug 30, 2002 · N747A · Substantial damageNTSB ATL02LA130Accident · No injuriesLimited investigationFinal reportSikorsky S-55-QT · Orlando, FLFailure of the cyclic lateral control rod end bearing, and subsequent dynamic rollover.Jun 25, 2002 · N2300Z · Substantial damageNTSB LAX81FA093Accident · 6 fatalClosedSikorsky S-55 · Beaumont, CAMay 29, 1981 · N874 · DestroyedNTSB FTW75DRD18Accident · No injuriesClosedSikorsky S-55 · Gulf Of Mexico (Gulf of Mexico)Dec 2, 1974 · N750A · Substantial damageNTSB NYC72FNA14Accident · Serious injuriesClosedSikorsky S-55 · Acton, MAOct 15, 1971 · N9009R · DestroyedNTSB ANC67A0021Accident · No injuriesClosedSikorsky S-55 · Galena, AKAug 20, 1966 · N747A · Substantial damageNTSB ANC66A0052Accident · No injuriesClosedSikorsky S55 · Kenai, AKJun 29, 1966 · N874 · Substantial damage
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
  WHERE a.aircraft_model_code IN ('8141602')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

FAA incident reports · 6

Matched to this model through the registry, by N-number and event date, checked against the reported make and model.

Accident 20060827019199ASkrsky S55 · Paramount, CA(-23) The pilot stated in a telephone interview that approximately five to six minutes after departing compton airport, he attempted to lean the engine mixture. As he moved the carburetor mixture control, the engine began to cough and sputter with a…Aug 27, 2006 · N111VA · Substantial damageAccident 20020830022079ASkrsky S55 · Lytle Creek, CA(.19) On August 30, 2002, at 1006 hours pacific daylight time, a Sikorsky S-55T, N747A, collided with terrain while attempting a precautionary landing in a dry Creek bed in Lytle Creek, California. The helicopter sustained substantial damage and the…Aug 30, 2002 · N747A · Substantial damageAccident 20020625015499ASkrsky S55 · Orlando, FL(-23) On the ground, while in the process of engaging the hydrometrical clutch at approximately 110 rotor RPM, there was a loud bang. The cyclic stick was pulled out of my hand, the helicopter wobbled a few times and rolled over on the port side.Jun 25, 2002 · N2300Z · No damageIncident 19870610080779ISkrsky S55 · Cold Springs, CANeedles split at idle. The clutch reengaged tearing up gear box. Shut down engine. Possible faulty main drive clutch.Jun 10, 1987 · N747A · Minor damageAccident 19810529030949ASkrsky S55 · Banning, CAStruck top of hill obscured by night and fog. Not IFR helicopter rated. Failed to check weather. Had drunk alcohol.May 29, 1981 · N874 · Destroyed · 5 fatalAccident 19741202038319ASkrsky S55 · Gulf Of Mexico, LANr 5 eng cylndr exhst rkr bx crckd. Emerg lndg made on bcksd of wave in 8 to 10 ft sea. Float equip.Dec 2, 1974 · N750A · Substantial damage
Query with SQL
duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
  FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
  WHERE aircraft_model_code IN ('8141602')
  ORDER BY event_date DESC, report_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Service difficulty reports · 3

SDR 2011FA0000779Fuel · inadequateWHILE DEMONSTRATING EXTERNAL LOAD CAPABILITY DIRECTLY ABOVE A JUNGLE HELIPAD, THE ENGINE BEGAN TO LOOSE RPM AND THE ACFT LANDED BACK ON THE PAD. THE LANDING WAS CONTROLLED AND TOUCHDOWN WAS CUSHIONED SO AS TO AVOID ANY DAMAGE. POSTFLIGHT INSPECTION REVEALED Jun 26, 2011 · N17756 · Skrsky S55 · Aircraft Fuel SystemSDR 20000615SH003Tail Boom · crackedUPPER TAIL CONE SKIN AT STA 181.9 CRACKED APPROXIMATELY 12 INCHES IN LENGTH. (X)May 11, 2000 · N17754 · Skrsky S55 · Rotorcraft Tail BoomSDR 20000407SH005Blade · crackedITEM CRACKED AT ROOT ATTACH POINT OF TAIL ROTOR BLADE. REMOVED TAIL ROTOR BLADE FROM ASSY AND DISCOVERED TAIL ROTOR BLADE ATTACH BOLTS WERE NOT TORQUED TO MANUFACTURER SPECIFICATIONS. (X)Feb 26, 2000 · N17754 · Skrsky S55 · Tail Rotor Blades
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE aircraft_model_key = 'S55'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

STCs that may be installed · 27

Approved for this model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.

STC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,Precise Flight IncSTC SA4-181Installation of VIP Part No. 101-79 engine mounts.FTG, Inc.STC SR02704SEInstallation and maintenance of the Sunspot 36 and 46 series lightsAeroLED's Holdings LLC
See all 27 STCs
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
  FROM (
    SELECT stc_number, min(matched_model) AS matched_model
    FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
    WHERE aircraft_model_code IN ('8141602')
    GROUP BY stc_number
  ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
  ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

PMA parts · 23

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

01-0790906-00LED Landing LightWhelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 202213889CONETimken Corporation · PMA PQ4105CE · Replaces 13889 · May 24, 201613889CONETimken Corporation · PMA PQ4105CE · Replaces 13889 · Jun 29, 2014
See all 23 PMA parts
Query with SQL
duckdb -csv -c "SELECT drs_guid, part_number, part_name, holder, pma_number, replaces_part, supplement_date, tcds_models
  FROM 'https://openairdocs.org/data/latest/faa_type_certificate_pma.parquet'
  WHERE tcds_number IN ('1H4')
    AND len(list_intersect(tcds_models, ['S-55'])) > 0
  ORDER BY supplement_date DESC, drs_guid DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

The same model under other registry codes

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

Sikorsky/Orlando S-551 registered aircraftRegistry code 8141605Sikorsky/Vertical S-551 registered aircraftRegistry code 8141824Sikorsky/Whisper Jet S-550 registered aircraftRegistry code 8141601
Query with SQL
duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = 'S55' AND m.code NOT IN ('8141602')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.