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Pratt & Whitney Canada PT6A-112

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Engine model · Turbo-prop · 500 hp · registry code 52255

Manufacturer (registry)
P&W CANADA
Model
PT6A-112
Registry code
52255
Installed in
20 registered aircraft
Type
Turbo-prop
Power
500 hp
Data sheet
TCDSE4EA
Holder
Pratt & Whitney Canada Corp.

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

On this page

Airworthiness directives that may apply · 5

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

1980In forceSuperseded2026
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_engine_model_directive.parquet' WHERE engine_model_code IN ('52255'))
  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

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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 ('52255'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 20

N101PSJtech Solutions Inc · San Ramon, CABuilt 1982 · S/N 4250108N111KULot-A-Go Six LLC · Polson, MTBuilt 1985 · S/N 425-0226N1262TColdsteel Holdings LLC · Naples, FLBuilt 1987 · S/N 4250236
See all 20 registered aircraft
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 engine_model_code IN ('52255')
  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 · 1

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

NTSB CEN19LA300Accident · No injuriesClass 3 · LimitedFinal reportCessna 425 · Bethany, OKA loss of control during the initial climb for undetermined reasons, which resulted in an aborted takeoff and runway excursion.Aug 25, 2019 · N300GD · 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.engine_model_code IN ('52255')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 5

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

Incident 20211219021289ICessna 425 · Naples, FLDuring an instrument approach in kapf on Sunday, 12/19/2021 the right main gear down indicator light failed to show a positive gear down position. I notified ATC with the intention of a low pass requesting that he put the binoculars on my gear. He indicated…Dec 19, 2021 · N1262T · No damageAccident 20190825018089ACessna 425 · Bethany, OKOn aug 25, 2019 a Cessna 425 conquest departed from wiley post airport (pwa), Bethany, Oklahoma. After becoming airborne with the landing gear up, the pilot began to experience loss of flight control with the aircraft rolling left and right alternately. The…Aug 25, 2019 · N300GD · Substantial damageIncident 20160818013279ICessna 425 · Naples, FLThe right engine would not power back on decent. The pilot elected to shut it down and landed without incident.Aug 18, 2016 · N1262T · No damageIncident 20121107025959IReims F406/Caravan II · Bethel, AKAt approximately 1030 on 11/7/2012, the air carrier's director of operations informed the cmt that one of their aircraft was circling the Bethel Airport with a nose landing gear that failed to extend. According to information received from the Bethel tower…Nov 7, 2012 · N861FT · Minor damageIncident 20091230053519ICessna 425 · Miami, FLATC received a phone call from an aircraft dealer stating a pilot had taken off in an aircraft he had purchased and he was unsaft to fly that model aircraft. He also stated he was not able to communicate in english. ATC contacted the us air force. Fighters…Dec 30, 2009 · N239JP · No 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 ('52255')
  ORDER BY event_date DESC, report_number DESC"

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Service difficulty reports · 110

SDR YN8R2026100600815Mount · crackedDURING THE PHASE 32, SENT THE ENGINE AND NACELLE TRUSSES OUT FOR NDI PER 5-14-22. THE ENGINE MOUNTS ARE NOT CALLED OUT FOR NDI INSPECTIONS DURING ANY PHASE. SENT THE ENGINE MOUNTS FOR NDI AS WELL THOUGH, DUE TO PREVIOUS FINDINGS OF CRACKS IN THE MOUNTS. IT WASOct 6, 2026 · N425CC · Cessna 425 · Engine Mount SectionSDR 2026FA0000006Mount · crackedDURING MINOR PHASE INSPECTIONS, THE RH ENGINE OUTBOARD ENGINE MOUNT P/N: 5951048-2 WAS VISUALLY FOUND TO BE CRACKED. AFTER DEFECT WAS FOUND, ENGINE REMOVAL TOOK PLACE TO INSPECT THE REMAINING TWO ENGINE MOUNTS AND THE FWD. ENGINE TRUSS. NO VISUAL DEFECTS WERE Jan 7, 2026 · N353ES · Cessna 425 · Engine Mount SectionSDR 2024FA0000783Compressor · failedON 7-2-24, N425CL EXPERIENCE AN INFLIGHT SUDDEN SHUTDOWN OF THE RIGHT-HAND ENGINE. AS THE MECHANIC FOR THIS AIRCRAFT, I REMOVED THIS ENGINE FOR SHIPMENT TO AN OVERHAUL FACILITY. INITIAL INSPECTION SHOWS THAT THE COMPRESSOR SECTION HAD SHED MOST OF THE COMPREJul 2, 2024 · N425CL · Cessna 425 · Turbine Engine Compressor Section
See all 110 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 = 'PT6A112'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 10

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 SE00004ENInstructions for Continued Airworthiness for the PT6A-11, -11AG, -15AG, -110 and-112 engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals.MORE Company IncSTC SE00014ENInstallation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models.Pratt & Whitney Engine Services Inc.STC SE00020ENInstallation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1Pratt & Whitney Engine Services Inc.STC SE615GLIncorporation of a fuel flow transducer.Shadin AvionicsSTC SE09257SCConvert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration.Covington Aircraft Engines, Inc.STC SE659NEInstallation of oil tank filler neck check valve, P/N TSA-76A.Aviation Components SupportSTC SE1122EARepair of combustion chamber small exit duct, P/N 3012060.Airwork CorporationSTC SE1269EAStripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc.Airwork CorporationSTC SE386NEInstallation of Turbo Products PMA parts.Audco CorporationSTC SE621GLModify PT6A-112 fuel inlet line and primary fuel pressure tube bracket.General Aviation, Inc
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 ('52255')
    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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PMA parts · 426

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 engine model on its data sheet, so check the FAA record before relying on it. Newest first.

3005293CPInsert, Fuel Control Drive ShaftCore Parts LLC · PMA PQ05326NM · Replaces 3005293 · Aug 17, 20263019136CPRing, PlasticCore Parts LLC · PMA PQ05326NM · Replaces 3019136 · Jul 10, 20263012928CPSpacer, SteppedCore Parts LLC · PMA PQ05326NM · Replaces 3012928 · Jul 10, 2026
See all 426 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 ('E4EA')
    AND len(list_intersect(tcds_models, ['PT6A-112'])) > 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.