NTSB investigations: Piper PA-18-135

8 cases on aircraft the registry lists as Piper PA-18-135, where the sequence of events included Loss of control on ground. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

20092026

NTSB investigations: Piper PA-18-135 per year, 2009–2026: 8 cases
2009	1
2011	1
2017	1
2018	1
2019	2
2022	2

Where

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Latest cases

Query with SQL

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_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7101820') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '230' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
  WHERE c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7101820')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s.\"tier2Number\" = '230' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\")))
  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_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7101820')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '230' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" 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.

NTSB ANC22LA074Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-135 · Palmer, AKThe pilot’s failure to maintain directional control of the airplane during the landing roll, which resulted in a ground loop and impact with terrain.Aug 30, 2022 · N1129 · Substantial damage NTSB CEN22LA295Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-135 · Walker, MNThe pilot’s failure to maintain directional control during landing. Contributing to the accident was the flight instructor’s delayed remedial action during a go-around.Jul 1, 2022 · N1136 · Substantial damage NTSB GAA19CA348Accident · No injuriesData collectionFinal reportPiper PA18 · Fairbanks, AKThe pilot receiving instruction's premature pitch control input during takeoff, which resulted in an aborted takeoff and subsequent impact with terrain. Contributing to the accident was the flight instructor's delayed remedial action.Jun 16, 2019 · N2765A · Substantial damage NTSB GAA19CA117Accident · No injuriesData collectionFinal reportPiper PA 18-135 · Longmont, COThe pilot's failure to maintain directional control during landing.Jan 3, 2019 · N89018 · Substantial damage NTSB GAA19CA022Accident · No injuriesData collectionFinal reportPiper PA 18-135 · Cherry Ridge, PAThe pilot's failure to maintain directional control during landing, which resulted in a ground loop.Oct 14, 2018 · N6690D · Substantial damage NTSB GAA17CA275Accident · Serious injuriesData collectionFinal reportPiper PA18 · Seward, AKThe flight instructor's incorrect brake application during a high-speed taxi with a tailwind, which resulted in a nose-over.May 11, 2017 · N1258C · Substantial damage NTSB ANC11CA076Accident · Minor injuriesData collectionFinal reportPiper PA-18-135 · Coldfoot, AKThe pilot's inadvertent application of the right brake pedal during the landing roll, which resulted in a nose-over.Aug 13, 2011 · N1258C · Substantial damage NTSB ANC09LA035Accident · No injuriesLimited investigationFinal reportPiper PA-18-135 · Palmer, AKThe non-certificated pilot’s decision to attempt to "ski" atop a water-covered tidal area in an airplane equipped with over-sized main landing gear tires, resulting in a loss of control and a nose over.Apr 26, 2009 · N3256B · Substantial damage