- Manufacturer (registry)
- P&W CANADA
- Model
- PT6A-135
- Registry code
- 52173
- Installed in
- 28 registered aircraft
- Type
- Turbo-prop
- Power
- 750 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.
| 1980 | 1 |
|---|---|
| 1997 | 1 |
| 2002 | 1 |
| 2012 | 1 |
| 2014 | 1 |
Engine · Pratt & Whitney Canada PT6A-135
AD 2014-11-05Reinforcement liner to the power turbine (PT) containment ring and, for certain PT containment rings, adding scallopsAD 2012-09-10First stage sun gearsAD 2002-23-13Turbine Exhaust DuctsAD 97-04-12Compressor Bleed-off ValveAD 80-08-12Fuel Pump Drive Coupling SplinesQuery 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 ('52173'))
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.
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 ('52173'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Information bulletins that may apply · 1
Engine · Pratt & Whitney Canada PT6A-135
SAIB NE-12-04Turbine/ Turboprop Engine: Reduction GearboxQuery 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 ('52173'))
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.
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 ('52173'))
GROUP BY s.saib_number ORDER BY issue_date DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Registered aircraft · 28
N105FC4j Air LLC · Newark, DEN11WNRds Aviation LLC · Elkhart, INN13PFOdyssey Entertainment Inc · Maple Grove, MN
See all 28 registered aircraftQuery 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 ('52173')
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.
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 ('52173')
ORDER BY n_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB investigations · 5
Aircraft matched to this engine model through the registry, by N-number and event date, checked against the reported serial number, make and model.
Of 4 cases NTSB coded with a defining event. All defining events
Findings NTSB made part of the probable cause. A case can have several. All findings
Of 1 case with NTSB’s older coding, defined in its coding manual.
NTSB WPR25LA230Accident · Minor injuriesClass 3 · LimitedPreliminary reportBallisodare Lancair Evolution · Coeur d' Alene, IDOn July 27, 2025, about 1010 Pacific daylight time, an experimental amateur-built Lancair Evolution airplane, N505RF, was destroyed when it was involved in an accident near Coeur d’Alene, Idaho. The pilot and two passengers sustained minor injuries. The…NTSB ERA20LA206Accident · 5 fatalClass 3 · LimitedFinal reportPiper PA 31T · Eatonton, GAThe pilot’s failure to maintain control of the airplane while maneuvering in instrument meteorological conditions, which placed the airplane in an unusual attitude from which the pilot could not recover. Contributing to the accident was the convective and…NTSB ERA20LA192Accident · No injuriesClass 3 · LimitedFinal reportBeech F90 · Knoxville, TNA failure of the left main landing gear scissors, which resulted in a landing gear collapse following a precautionary landing with the landing gear in an intermediate position..NTSB CEN13IA177Incident · No injuriesIncident investigationFinal reportTTX Air Lancair · Indianapolis, INThe pilots' failure to verify landing gear extension before landing.NTSB CHI86LA143Accident · No injuriesLimited investigationFinal reportBeech BE-F90 · Eaton, INThe acft had made a stop at muncie to pick up a fourth passenger. After boarding, the passenger closed the cabin door. After departure and climbing thru 6,000 ft the airstair separated from the aircraft and struck the vertical stabilizer.
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 ('52173')
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.
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 ('52173')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
FAA incident reports · 10
Matched to this engine model through the registry, by N-number and event date, checked against the reported make and model.
Accident 20250727009019ABallisodare Lancair Evolution · Hayden, IDPilot was working the LH pattern for rwy 20 at coe. On his their pattern, base leg, the engine lost power. Pilot landed airraft in a vacant field and evacuated himself and the passengers. Airraft subsequently caught fire and was destroyed.Accident 20200605006639APiper PA-31T · Eatonton, GAWeather consisted of a band of thunder heads where aircraft was lost from radar. Flight aware flight tracking indicated the flight had just penetrated a heavy area of precipitation. Aircraft parts separated in flight. 95% of aircraft part recovered over an…Accident 20200518006769ABeech F90 · Knoxville, TNAfter takeoff the PIC discovered the landing gear was stuck in transit mode and tried to extend them with the hand pump, but to no avail. After several flyby's of the air control tower the PIC elected to land the aircraft with gear partially retracted and…Incident 20200122001669IRisk Assumption Leasing Lancair Evolution · Crystal, MN2020-01-21-N13PF, single occupant. PIC woke up at 0500L and got on a 0700L comair flight to bend Oregon to pick up his plane from a 3 month maintenance evolution. After being out of N13PF cockpit for almost 4 months, the PIC performed a 45 minute warmup…Incident 20191202022139IBeech F90 · Myrtle Beach, SCDuring cruise at FL230, the copilot side windshield suddenly cracked (as shown in picture above). Windshield heat was on normal as per the checklist and recommended procedures for high altitude flight. Pilot requested lower altitude from center and stated…Incident 20130805014909ISmooth Landing Evolution · Wickenburg, AZFlight originated at falcon field (kffz), mesa, AZ and was to end after the 40 hours of fly-off time at wickenberg field (E25). The weather was clear with 5 to 10 knot winds from the southeast. Pilot entered the pattern for runway 5 and everything was normal…Accident 20130221002669ATTX Air Lancair Evolution · Indianapolis, INOn 02/21/2013, N613TX, a Lancair Evolution, was conducting touch and go takeoffs and landings at the Eagle Creek Airpark (eye) in Indianapolis, IN. On the third approach, the pilot in command and a Lancair program pilot insturctor, reported a problem with the…Incident 20100819043669IPiper PA-31T2 · Marysville, OHAirman assigned 10,000 feet MSL per ATC. Airman descended to 9,500 feet MSL without an ATC clearance. Airman's loss of altitude caused a loss of seperation with a 14 CFR part 121 air carrier.Incident 19900828047569IPiper PA31T1 · Farmingdale, NYUnable to retract gear after departure. Returned. Landed with nose gear partially up.Accident 19860520021089ABeech F90 · Eaton, INThe passenger door separated from the aircraft on climbout. The pilot failed to ensure door was properly secured.
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 ('52173')
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.
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 ('52173')
ORDER BY event_date DESC, report_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Service difficulty reports · 128
SDR 2025FA0000591Reservoir · leakingAIRCRAFT DEPARTED KSHR AT APPROXIMATELY 0812 ENROUTE KBIL. ON APPROACH INTO KBIL, LANDING GEAR WAS SELECTED DOWN BUT FAILED TO FULLY EXTEND. THE PILOT FOLLOWED EMERGENCY LANDING GEAR EXTENSION PROCEDURES AND GOT ALL THREE LANDING GEAR DOWN AND LOCKED. THE AIRCSDR G1IA20220707027Powerpack · weakWHILE SETTING UP FOR LANDING IN KRQE, GEAR HANDLE WAS PLACED DOWN. THE GEAR NEVER LOCKED IN DOWN POSITION. I ATTEMPTED TO PUT THE GEAR BACK UP AND THE GEAR DID NOT RETURN TO THE UP POSITION. THE GEAR UNSAFE RED LIGHTS REMAINED ON. I PLACED THE GEAR HANDLE BACKSDR 2018FA0000388Fuel Line · crackedUPON ENGINE SHUT DOWN IT WAS NOTED FUEL LEAKING FROM THE RIGHT ENGINE. ENGINE WAS UN-COWLED, GROUND RUN REVEALED A FUEL LEAK FROM FCU HIGH PRESSURE FUEL LINE P/N 3011849. LINE WAS REPLACED WITH NO FURTHER FUEL LEAKS NOTED. THE LEAKING FUEL LINE WAS INSPECTED A
See all 128 difficulty reportsQuery 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 = 'PT6A135' 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.
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 = 'PT6A135' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
STCs that may be installed · 12
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 SE00002ENInstructions for Continued Airworthiness for the PT6A-34, -34AG, -34B, -36, -114, -114A, -116, -135, and -135A 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.STC SE11139SCThe conversion of the Pratt & Whitney Canada, Model PT6A-135 to a PT6A-135A turboprop engineSTC 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.STC SE00020ENInstallation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1STC SE2960SOInstallation of an oil filler cap safety adapter.STC SE615GLIncorporation of a fuel flow transducer.STC SE09286SCInstallation of an alternate gas generator case.STC SE09257SCConvert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration.STC SE659NEInstallation of oil tank filler neck check valve, P/N TSA-76A.STC SE5601SWReplacement splined end and oil mist lubrication on accessory drive gearshaft.STC SE1165EAAssembly and installation of AW10262 wet spline starter gear seal.STC SE4570SWRevise accessory drive spline, P/N 3008181.
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 ('52173')
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.
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 ('52173')
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_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
PMA parts · 527
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.
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-135'])) > 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.
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-135'])) > 0
ORDER BY supplement_date DESC, drs_guid DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.