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Allison 250-C18

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Engine model · Turbo-shaft · 317 hp · registry code 03075

Manufacturer (registry)
ALLISON
Model
250-C18
Registry code
03075
Installed in
2 registered aircraft
Type
Turbo-shaft
Power
317 hp
Data sheet
TCDSE4CE
Holder
Rolls-Royce Corporation

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

On this page

Airworthiness directives that may apply · 14

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

1968In forceSuperseded2026
Superseded and historical ADs · 1
AD 2004-24-09Fuel nozzleHistoricalEffective Jan 5, 2005 · Replaced by AD 2006-16-04
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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 ('03075'))
  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 · Allison 250-C18

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 ('03075'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 2

N206WCRuckle Kelby J · Whittemore, MIBuilt 1969 · S/N 345N48316Hammock Flying Service Inc · Smithville, ARBuilt 1966 · S/N 3628
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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 ('03075')
  ORDER BY n_number"

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NTSB investigations · 3

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 1 case 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 2 cases with NTSB’s older coding, defined in its coding manual.

NTSB CEN16LA182Accident · 1 fatalLimited investigationFinal reportBell 47G 3B 1 · Portia, ARThe pilot's decision to perform a sliding takeoff from the elevated platform, which resulted in a dynamic rollover when the right skid plate caught on a protruding screw. Contributing to the accident was the pilot's failure to adequately inspect the landing…May 13, 2016 · N48316 · Substantial damageNTSB NYC95LA147Accident · 1 fatalLimited investigationFinal reportBell 47G-3B-1 · Hammonton, NJfailure of the collective yoke bearing, which resulted in an uncontrolled descent and collision with trees. A factor relating to the accident was: the manufacturer's inadequate inspection interval of the yoke bearing.Jul 10, 1995 · N48316 · DestroyedNTSB NYC84LA055Accident · No injuriesLimited investigationFinal reportBell 47-G3B1 · Dummerston, VTThe plt initiated a practice autorotation from about 600 ft AGL. Airspeed was about 55 KTS with low m/r RPM due to low gross weight. A moderate flare was initiated in an effort to increase rotor RPM, reducing the airspeed to 40 KTS. However, the application…Dec 18, 1983 · N48316 · Substantial damage
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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 ('03075')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 3

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

Accident 20160513007139ABell 47G-3B-1 · Portia, AROn may 5, 2016, at 0715 CST, a Bell 47G, N48316, registered to hammock flying service, inc, collided with the operator?s reloading truck in Portia, Arkansas, while on aerial application flight. Visual meteorological conditions prevailed at the time, but,…May 13, 2016 · N48316 · Destroyed · 1 fatalAccident 19950710017499ABell 47G3B1 · Hammonton, NJCrashed into trees on forced landing. Collective pitch control bearing failed, due worn out. No required inspectionJul 10, 1995 · N48316 · Destroyed · 1 fatalAccident 19831218061529ABell 47G3B1 · Dummerston, VTTail rotor hit the ground on a practice autorotation landing. Lost lateral control. Collapsed a skid. Rolled over.Dec 18, 1983 · N48316 · 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 engine_model_code IN ('03075')
  ORDER BY event_date DESC, report_number DESC"

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Service difficulty reports · 27

SDR 2012FA0000550Flex Coupling · separatedFLEX COUPLING FAILED AT OUTPUT OF INTERMEDIATE GEARBOX. SUBSTATIAL DAMAGE OCCURED DURING HARD LANDING.Aug 7, 2012 · N5038F · Hiller 1100 · Tail Rotor Drive ShaftSDR AU510001641Strobe · wrong part(AUS) INCORRECT STROBE LIGHT FITTED. THE INCORRECT LIGHT WAS APPROXIMATELY 50MM (1.96IN) HIGHER THAN THE ORIGINAL LIGHT. THIS EXTRA HEIGHT BROUGHT THE LIGHT INTO THE TRACKING AREA OF THE MAIN ROTOR BLADES WHICH CONSEQUENTLY IMPACTED ON THE LIGHT CAUSING UNREPAJul 4, 2005 · Hughes 369A · Exterior LightingSDR CA041007004Gear · worn(CAN) THIS IS THE OIL PUMP GEAR THAT DRIVES THE HYDRAULIC PUMP ON THE AC, GREASING INTERVAL IS 300 HRS. THIS SHAFT WAS GREASED EVERY 100 HRS AND HAS TOTALLY WORN OUT. THIS SHAFT ALSO WEARS OUT THE COUPLING IT ATTACHES TO, AS WELL.Sep 27, 2004 · Bell 206BELL · Turbine Engine Oil System
See all 27 difficulty reports
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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 = '250C18'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 4

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 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 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 ('03075')
    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"

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