- Manufacturer (registry)
- AIRESEARCH
- Model
- TPE331-6-251M
- Registry code
- 01521
- Installed in
- 11 registered aircraft
- Type
- Turbo-prop
- Power
- 750 hp
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 0
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
No ADs matched this model
Registered aircraft · 11
N139JBQuay Ventures LLC · Alto, TXN2239VNorth Star Aviation Inc · Ulysses, KSN28AFEumundi Trading Co Inc · Wilmington, DEN4109VArnt Aerial Spraying Inc · Worthington, MNN441KBOne Kilo Bravo LLC · Grand Junction, CON441PPLand Air Sea Inc · Chesapeake, VAN687HBSouthern Jets Inc · Naples, FLN690ASAero Commander N690as LLC · Kalispell, MTN699ALBallard Aviation Inc · Newton, KSN980AKUniversal Pacific Investment Corporation · Portland, ORN999UPMootood LLC · Kingshill, VI
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 ('01521')
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 ('01521')
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 5 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
NTSB CEN25LA304Accident · Serious injuriesClass 3 · LimitedPreliminary reportAyres S2R-G6 · Slayton, MNOn August 6, 2025, about 1300 central daylight time, a Ayres Corporation S2R-G6, airplane, registration N2239V, was substantially damaged when it was involved in an accident near Slayton, Minnesota. The pilot was seriously injured. The airplane was operated…NTSB ERA16LA320Accident · No injuriesLimited investigationFinal reportBeech B100 · Jackson, TNThe pilot’s improper landing flare, which resulted in a hard landing.NTSB ERA14CA276Accident · Minor injuriesData collectionFinal reportSwearingen SA 226AT · Dayton, TNThe pilot's failure to extend the landing gear during the approach, which resulted in a gear-up landing.NTSB SEA08LA117Accident · No injuriesLimited investigationFinal reportRockwell 690C · Minden, NVThe collapse of both main landing gear for undetermined reasons.NTSB CHI08CA074Accident · No injuriesData collectionFinal reportSwearingen SA-226AT · Ankeny, IAThe pilot's failure to maintain directional control during the takeoff roll. Contributing to the accident was the snow on the runway and the snowbank.
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 ('01521')
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 ('01521')
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 · 9
Matched to this engine model through the registry, by N-number and event date, checked against the reported make and model.
Accident 20250806017179AAyres S2R-G6 · Slayton, MNThe company reported the aircraft was overdue to return from aerial application operations. Another aircraft was sent to locate it. The aircraft was located in a soy bean field approximately 2 miles from the base airport. The aircraft appeared to have struck…Accident 20160921020569ABeech B100 · Jackson, TNOn September 21, 2016 aircraft N66804 a Beech king air (B-100) piloted by[privacy data omitted] left memphis international airport (kmem) at approx. 1600 local time enroute to Jackson regional airport(kmkl) Jackson, TN. The pilot in command (PIC) had filed an…Incident 20150823014919IMitsubishi MU-2B-26A · Marathon, FLAircraft landed on rwy 07, nose gear collapsed on touchdown.Accident 20140602007429ASwearingen SA-226AT · Dayton, TNAircraft landed with landing gear up. Aircraft was lifted and landing gear doors cleaned (mud and grass) and landing gear went down. Outside of gear doors were damaged due to not opening nor were they commanded to open on landing sequence.Incident 20130221002039ISwearingen SA-226AT · New York, NYOn February 21, 2013 at 2120 EST, a Swearingen, N120SC, registered to mcneely charter service, inc., struck four runway lights while positioning for takeoff at john f. kennedy international airport, New York, New York, while on a repositioning flight. Visual…Incident 20120714013979IMitsubishi MU-2B-26A · Key West, FLOn 7/14/12 N333RK MU2/U landed on runway 09 at eyw. Upon landing rollout went off side of runway into the gravel area. Pilot and 3 pax not injuried and no damage to a/c upon initial inspection. Pilot reported drop in nose and control was minimal. Upon…Accident 20080502838289AGulstm 690C · Minden, NV(-23) The pilot was taxiing out for takeoff and in the ninety degree turn onto the runway he said he heard a bang and the airplane seemed to hop at the same time. He said the airplane began to settle, he shut off the engines, but the right propeller tips…Accident 20080205010279ASwrngn SA226AT · Ankeny, IA(-23) The pilot back taxied runway 18/36 for departure on 36. After getting his release, he began his takeoff roll. About eighty knots, all instruments were normal then the aircraft pulled hard left and he was unable to correct with rudder. The pilot departed…Incident 19980101003609IBeech B100 · Tyler, TXNarrative: pilot stated that during take-off roll at about 800 knots, the left engine made a poof sound. Take-off was terminated and engine secured. Subsequent investigation revealed that the engine plenum chamber had failed which resulted in minor fire…
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 ('01521')
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 ('01521')
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 · 6
SDR CA140131006Window · departed(CAN) WINDOW BLEW OUT AT ALTITUDE RESULTING IN DECOMPRESSION.SDR 2007F00006Clamp · crackedCRACK WAS FOUNDING STARTING AT THE DOWL PIN HOLE OF THE BLADE CUFF.SDR MCC2005F00000Fire Warning · intermittentRT ENGINE FINE WARNING FLICKERED ONE TIME IN FLIGHT. PILOT SECURED ENGINE AND FEATHERED PROP. UNEVENTFUL LANDING MADE AT MAINTENANCE INSPECTED ENGINE AND FOUND NO EVIDENCE OF FIRE OR FIRE DAMAGE. GROUND RUN ENGINE COULD NOT DUPLICATE PROBLEM. (K)SDR ODAR018HTorque Link · brokenRT MLG TORQUE KNEE FAILED AT UPPER PIVOT PIN. TORQUE KNEE WAS FOUND WITH SECTION MISSING ON INBOARD HALF AND BROKEN ON OUTBOARD SIDE. CRACKS WENT THROUGH GREASE FITTING HOLES IN BOTH CASES. GREASE FITTINGS WERE BOTH LOST. POSSIBLY CAUSED BY EXCESSIVE SIDE SDR 99ZZZX1417Housing · damagedTHREADS FOR FITTING OF AFT OIL SCAVENGE PUMP LINE, IN ACCESSORY/GEAR HOUSING, STRIP OUT CAUSING OIL LEAK.SDR CA980928019Carbon Seal · failed(CAN) THE PILOT OBSERVED FLUCTUATIONS IN TORQUE AND OIL PRESSURE, AS WELL AS VISIBLE OIL VENTING FROM THE ENGINE. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT LANDED. POST-FLIGHT INSPECTION FOUND A MISSING SECTION OF THE 1ST STAGE TURBINE WHEEL CREATED AN IMBAL
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 = 'TPE3316251M' 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 = 'TPE3316251M' 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.