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U/A Canada PT6A-20

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Engine model · Turbo-prop · 550 hp · registry code 61568

Manufacturer (registry)
U/A CANADA
Model
PT6A-20
Registry code
61568
Installed in
2 registered aircraft
Type
Turbo-prop
Power
550 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 · 11

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

1968In forceSuperseded2026
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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 ('61568'))
  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 ('61568'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 2

N62LHKavalair LLC Series F · Marion, MTBuilt 1968 · S/N 97N908KPetors John W · Addison, TXBuilt 1970 · S/N LJ-504
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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 ('61568')
  ORDER BY n_number"

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NTSB investigations · 2

Aircraft matched to this engine 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 1 case with NTSB’s older coding, defined in its coding manual.

NTSB ATL84LA120Accident · No injuriesLimited investigationFinal reportBeech 99 · Myrtle Beach, SCThe acft was landed with the landing gear up. The plt said that the sun was shining on the instrument panel and he thought he saw 3 green lights. After the acft stopped on the rwy the red light in the gear handle was on and the warninghorn was sounding. He…Mar 14, 1984 · N7994R · Substantial damageNTSB MKC74IK067Incident · No injuriesClosedBeech 99 · Fort Dodge, IAMay 18, 1974 · N7994R · Minor 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 ('61568')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 8

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

Incident 20150111018759IBeech 99 · Saint Kitts AndOn January 23, 2015 at approx.1340 inspector hernandez; visited aviation partners of boynton beach to investigated an alleged incident that occurred on 1/11/2015, at st Kitts airport (skb). The company?s director of operations (do) indicated that January 14,…Jan 11, 2015 · N7994R · Minor damageIncident 20021002034819IBeech 99 · Grand Island, NE(-23) On October 2, 2002 at approximately 19:30 CDT a Beechcraft 99, N7994R operated by suburban air freight inc. under certificate number JDWA157F departed central Nebraska regional airport on a FAR 135 cargo flight with the destination of omaha, NE.…Oct 2, 2002 · N7994R · Minor damageIncident 19980826032319IBeech 99 · Omaha, NEOn 8/26/98, approximately 0630 CDT, Beechcraft 99, N7994R departed Eppley Airfield, Omaha, NE, while engaged in FAR part 135 cargo operations for suburban air freight, inc. during climbout the PIC was unable to hydraulically retract the landing gear, and…Aug 26, 1998 · N7994RIncident 19951103039919IBeech 99 · Omaha, NEBird strike left wing on approach to oma. Damaged wing leading edge.Nov 3, 1995 · N7994R · Minor damageIncident 19851002068849IBeech 99 · Kearney, NEEncountered a small flock of birds at 7500 feet. Multiple impacts and ingestion of bird parts in left engine.Oct 2, 1985 · N7994R · Minor damageIncident 19850801050359IBeech 99 · Omaha, NEShortly after takeoff baggage door unlock light came on. Returned for landing. Cause undetermined.Aug 1, 1985 · N7994RAccident 19840314005689ABeech 99 · North Myrtle Be, SCPilot forgot to extend landing gear. Landed gear up.Mar 14, 1984 · N7994R · Substantial damageIncident 19810312015999IBeech 99 · Denver, CODuring taxi after landing, the pilot had trouble following the taxi lights and ran off the runway.Mar 12, 1981 · N7994R
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 ('61568')
  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 · 197

SDR EBTR20170523015Engine · shutdownON DESCENT FROM UGN TO ARB HEARD POP, AIRCRAFT YAWED, NOTICED RIGHT ENGINE FUEL FLOW AND ITT DIMINISHING TO 0. VISUAL OF ENGINE COWL NO DEFECTS NOTED. FOLLOWED FLIGHT MANUAL PROCEDURES FOR ENGINE RESTART USING ISOLATION SWITCH NO FUEL FLOW OR ITT REGISTERED ANMay 20, 2017 · N4447W · Beech C90 · Engine (Turbine/Turboprop)SDR CTY2016F00001Engine · overheatedENGINE OVERHEATED AT 6000 FT ON CLIMBOUT. FEATHERED PROP AND RETURNED TO DEPARTURE. WILL BE DOING A TEARDOWN REPORT. WE ARE SENDING THE FUEL CONTROL UNIT OUT FOR TESTING. UNTIL THAT TIME, WE ARE NOT DRAWING ANY CONCLUSIONS.Aug 22, 2016 · N46CV · Beech C90 · Engine (Turbine/Turboprop)SDR AXSA2016080800001Governor · bypassingON FLIGHT, CALLED FLIGHT CONTROL VIA UNICOM AT 1140Z TO TELL US HE WAS TAXING BACK TO RAMP. WHILE INCREASING POWER FOR TAKEOFF, PROP WENT INTO FEATHER.Aug 5, 2016 · N195WA · Beech A99 · Propeller Governor
See all 197 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 = 'PT6A20'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 13

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 SE00003ENInstructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B 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 SE2960SOInstallation of an oil filler cap safety adapter.Jet Avion CorporationSTC 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 SE1269EAStripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc.Airwork CorporationSTC SE5601SWReplacement splined end and oil mist lubrication on accessory drive gearshaft.Aviall of Texas, IncSTC SE1165EAAssembly and installation of AW10262 wet spline starter gear seal.Airwork CorporationSTC SE4607SWRevise the starter-generator drive spline to provide lubrication with engine oil.Aviall of Texas, IncSTC SE4570SWRevise accessory drive spline, P/N 3008181.Aviall of Texas, IncSTC SE12CEInstallation of Gits Brothers Manufacturing Company dipstick filler cap assembly P/N 02297-2000.Gits Brothers Mfg Co
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 ('61568')
    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 · 385

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 385 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-20'])) > 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.