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Rolls-Royce 250-C20

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Engine model · Turbo-shaft · 400 hp · registry code 54178

Manufacturer (registry)
ROLLS-ROYC
Model
250-C20
Registry code
54178
Installed in
42 registered aircraft
Type
Turbo-shaft
Power
400 hp
Data sheet
TCDSE4CE
Holder
Rolls-Royce Corporation

Model codes come from the FAA registry’s reference file.

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Airworthiness directives that may apply · 20

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

1972In forceSuperseded2026
See all 25 ADs
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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_engine_model_directive.parquet' WHERE engine_model_code IN ('54178'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

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Information bulletins that may apply · 1

Engine · Rolls-Royce 250-C20

SAIB CE-01-10Issued Jan 24, 2001
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duckdb -csv -c "SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
  FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
  WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_saib.parquet' WHERE engine_model_code IN ('54178'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 42

N106AMJasons Helicopter Services LLC · New Prague, MNBuilt 1974 · S/N 1384N110GLQualitair LLC Trustee · MichelstadtBuilt 1982 · S/N 6031N114GSAviation Company Inc · Cheyenne, WYBuilt 1976 · S/N 34
See all 42 registered aircraft
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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 engine_model_code IN ('54178')
  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 · 23

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

Defining event, 2008 on

Of 16 cases NTSB coded with a defining event. All defining events

In the probable cause, 2008 on

Findings NTSB made part of the probable cause. A case can have several. All findings

First occurrence, 1982 to 2007

Of 5 cases with NTSB’s older coding, defined in its coding manual.

NTSB WPR25FA114Accident · 1 fatalClass 3 · FieldPreliminary reportBell 206B II · Mountain Home Park, WAOn March 19, 2025, at 1228 Pacific daylight time, a Bell 206B II, N23SD, was substantially damaged when it impacted electrical cables and terrain near Mountain Home Park, Washington. The commercial pilot was fatally injured. The helicopter was operated as a…Mar 19, 2025 · N23SD · Substantial damageNTSB GAA24WA292Accident · No injuriesClass 5 · ForeignBell 206 · Arroyo Agua, Dominican RepublicSep 21, 2024 · N206BH · DestroyedNTSB CEN23LA237Accident · Minor injuriesClass 4 · LimitedFinal reportBell 206B · Pratt, KSFuel exhaustion due to the pilot’s inadequate preflight planning.Jun 11, 2023 · N85RB · Substantial damage
See all 23 investigations
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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.engine_model_code IN ('54178')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 32

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

Accident 20250319002799ABell 206B II · Dayton, WAPilot failed to observe the power lines suspended accross the valley.Mar 19, 2025 · N23SD · Destroyed · 1 fatalIncident 20250215003069IBell 206B-III · Hollywood, FLOn February 15, 2025 at approximately 1230 pm local time, Bell 206B registered as nxxxx, had an engine chip light annunciation during cruise flight along the shoreline on Hollywood beach, FL. The pilot in command followed the pilots operating handbook which…Feb 15, 2025 · N206BP · No damageAccident 20230611008069ABell 206B · Pratt, KSHaving completed first job, the pilot headed for peeryton (kpxy) for refuel. No fuel available. Next he headed to ashland, KS and to commanche co. (K38K) for fuel. No fuel available there. But he had looked at comanche co, TX by mistake. With 15 gal of fuel…Jun 11, 2023 · N85RB · Substantial damage
See all 32 incident reports
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 engine_model_code IN ('54178')
  ORDER BY event_date DESC, report_number DESC"

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Service difficulty reports · 945

SDR 2026FA0000472Lock Nut · failedMS20143 NUTS ARE UTILIZED TO SECURE WITHIN THE ENGINE ASSEMBLY THE FOLLOWING ARTICLES COMPRESSOR, TURBINE, FUEL CONTROL, GOVERNOR, FUEL PUMP, TACH GENERATORS, GEARBOX SPLIT LINE, AND HAVE BEEN FOUND NUMEROUS OCCASIONS BACKING OFF. THE MS21043 NUTS HAVE BEEN RMay 28, 2026 · N774CB · Hughes 369E · Engine (Turbine/Turboprop)SDR EVCA07192021Control Unit · malfunctionedRECENTLY INSTALLED SYSTEM TRUE BLUE BATTERY WAS GETTING A RED TEMP HOT CAUTION LIGHT FOR THE AIRCRAFT BATTERY WHEN THE STARTER BUTTON WAS PRESSED. THE BATTERY WOULD NOT PHYSICALLY BE HOT BUT THE TEMP LIGHT WOULD ILLUMINATE ABOVE 3% N1 AND EXTINGUISH BELOW 3% NJul 19, 2021 · N108AE · Bell 206L1 · Battery/Charger SystemSDR QMLA2020052820022Duct · looseDURING CRUISE FLIGHT, CREW AND PATIENT COMPLAINED OF CARBON MONOXIDE POISONING SYMPTOMS INCLUDING LIGHT HEADEDNESS, SLEEPINESS AND HEADACHE. HEATER WAS IN OFF POSITION, BOTH SWITCHES, BUT HEAT AND FUMES WERE COMING FROM HEATER VENT IN AFT COMPARTMENT OF AIRCRAMay 26, 2020 · N911AL · Bell 407 · Heating System
See all 945 difficulty reports
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 engine_model_key = '250C20'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 6

Approved for this engine 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 SE5511NMInstallation of compressor discharge pressue (PC) valve.Bell Helicopter Textron Inc.STC SE769NWInstallation of Soloy Part No. 250-1001-1 fuel line.Siam Hiller Holdings IncSTC SE00027ENInstallation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models.Pratt & Whitney Engine Services Inc.STC SE492GLIncorporation of a fuel flow transducer.Shadin AvionicsSTC ST00037ATUnison igniter plugs, P/N 9044400-1.Unison IndustriesSTC SQ00338ATUnison igniter leads, P/N9048222-101, 102, 103, 104, 105, 106.Unison Industries
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_engine_model_stc.parquet'
    WHERE engine_model_code IN ('54178')
    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.