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Pratt & Whitney PT6 series

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Engine model · Turbo-prop · 500 hp · registry code 52033

Manufacturer (registry)
P&W
Model
PT6 SERIES
Registry code
52033
Installed in
43 registered aircraft
Type
Turbo-prop
Power
500 hp

The registry names only the engine series, so ADs for every model in the series are matched.

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Airworthiness directives that may apply · 35

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

1968In forceSuperseded2026
See all 38 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_engine_model_directive.parquet' WHERE engine_model_code IN ('52033'))
  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.

Information bulletins that may apply · 5

Query with SQL
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 ('52033'))
  GROUP BY s.saib_number ORDER BY issue_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.

Registered aircraft · 43

N1079UTurbines Ltd · West Point, NEBuilt 1980 · S/N 31122N119WGHigh Performance Helicopters Corp · Crestline, CABuilt 2005 · S/N 14502N121CMSpace Coast Aircraft Co · Merritt Island, FLBuilt 1993 · S/N 208B0336
See all 43 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 ('52033')
  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 · 20

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 11 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 7 cases with NTSB’s older coding, defined in its coding manual.

NTSB WPR23LA338Accident · Serious injuriesClass 3 · LimitedFinal reportBell 212 · Balch Camp, CAThe pilot’s inadequate performance planning for the operation that resulted in an excessive gross weight for the operating conditions, leading to a loss of altitude during maneuvering and contact with trees. Contributing to the accident was the pilot’s…Sep 10, 2023 · N873HL · DestroyedNTSB WPR21LA268Accident · No injuriesClass 3 · LimitedFinal reportBell 212HP · Weed, CAThe pilot’s failure to maintain altitude during an approach to a lake. Contributing to the accident was the pilot’s failure to release the full water bucket as the helicopter was settling, which reduced the helicopter’s out-of-ground-effect performance.Jul 7, 2021 · N911KW · Substantial damageNTSB DCA20MA059Accident · 9 fatalClass 1 · MajorFinal reportSikorsky S76 · Calabasas, CAThe pilot’s decision to continue flight under visual flight rules into instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and loss of control. Contributing to the accident was the pilot’s likely self-induced pressure…Jan 26, 2020 · N72EX · Destroyed
See all 20 investigations
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 ('52033')
  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 · 29

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

Accident 20230909010609ABell 212 · Balch Camp, CAWhile slowing the aircraft to do firefighting water drop operations, at approximately 100 ft AGL, due to unknown reasons, the aircraft settled and the main rotor blades contacted the surrounding trees, which caused the aircraft to rapidly descended and…Sep 9, 2023 · N873HL · DestroyedAccident 20210707016999ABell 212A phone interview with pilot[privacy data omitted] July 17, 2021 by inspector [privacy data omitted] assistant to the iic revealed that [privacy data omitted] felt a lateral vibration in the aircraft while in close proximimity to the lake while loading water…Jul 7, 2021 · N911KW · Substantial damageAccident 20200126001589ASikorsky S-76B · Calabasas, CAOn January 26, 2020, at 0945 pacific standard time (PST), a Sikorsky S-76B helicopter, N72EX, Collided with hilly terrain near the city of Calabasas, California. The pilot and eight passengers Were fatally injured, and the helicopter was destroyed by impact…Jan 26, 2020 · N72EX · Destroyed · 9 fatal
See all 29 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 ('52033')
  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 · 884

SDR 6CBA2026040126001Fuel Sys · low pressureDURING A REPOSITION FLIGHT OUT OF KOJC, AN AMBER FUEL PRESSURE LOW (CAS) DISPLAYED ON TAKE OFF ROLL RESULTED IN A REJECTED TAKE OFF. MAINTENANCE IS BEING CARRIED OUT AND A SUPPLEMENTAL SDR WILL BE FILED WITH THE SAME UNIQUE CONTROL NUMBER WHEN A RESOLUTION ISApr 1, 2026 · N954AF · Pilats PC1247E · Aircraft Fuel Distribution SystemSDR 6CBA2026031003001Fuel Sys · out of balanceDURING A PART 91 FLIGHT FROM KSWO TO KBTA, AT 1000 FL THE CREW NOTED A CAS MESSAGE FOR FUEL IMBALANCE WITH FOUR BARS DIFFERENCE BETWEEN LEFT AND RIGHT SIDE. ADDITIONALLY, WITH THE AUTOPILOT DISCONNECTED, THE AIRCRAFT ROLLS LEFT. THE CREW DIVERTED TO KOJC ANDMar 10, 2026 · N954AF · Pilats PC1247E · Aircraft Fuel Distribution SystemSDR 8SMA202509090001Throttle · faultedPILOT REPORTED AN UNCOMMANDED LOSS OF THRUST DURING INITIAL CLIMB AFTER TAKING OFF. AFTER REVIEW WITH PILATUS, P&WC, HONEYWELL AND ENGINEERING DEPARTMENTS, NO FAULTS WHERE FOUND. HOWEVER, THE PILOT REPORTED HE DID NOT MOVE THE PCL AND HE COULD NOT GET MAX POWEAug 29, 2025 · N26XM · Pilats PC1247E · Power Lever
See all 884 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 = 'PT6'
  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 · 58

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 SE12225ACThis STC will incorporate P&W 1700 rpm propeller reduction gearbox on P&WC engines to allow 1700 rpm propeller installationHigh Cotton Aircraft Conversions, LLC · Lists PT6A-41STC SE00010ENInstructions for Continued Airworthiness for the PT6A-25, and, -25A 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 Inc · Lists PT6A-25STC SE000010ENInstructions for Continued Airworthiness for the PT6A-25 and PT6A-25A 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, Inc. · Lists PT6A-25
See all 58 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_engine_model_stc.parquet'
    WHERE engine_model_code IN ('52033')
    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.