NTSB investigations: Lockheed 18-56, TX

7 cases on aircraft the registry lists as Lockheed 18-56. 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

19642026

NTSB investigations: Lockheed 18-56, TX per year, 1964–2026: 7 cases
1964	1
1973	2
1977	1
1979	1
1987	1
2004	1

Where

Open the map

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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5261642')) 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.\"eventStateOrRegion\" = 'TX' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5261642'))
  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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('5261642'))
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 FTW05LA003Accident · Minor injuriesLimited investigationFinal reportLockheed 18-56 · Midland, TXThe pilot's failure to maintain directional control during takeoff. Contributing factors were the choice of runway used and the prevailing tailwind.Oct 3, 2004 · N6371C · Substantial damage NTSB FTW88FA035Accident · Serious injuriesField investigationFinal reportLockheed 250 TRI-GEAR · Dallas, TXThe right engine of the aircraft failed three times in flight. After the last failure near the middle marker the pilot feathered the propeller. The aircraft collided with power lines and the ground about 400 yards short of runway 31 at the redbird airport.…Dec 7, 1987 · N400NY · Destroyed NTSB FTW79FA073Accident · No injuriesClosedLockheed 18 · Brownsville, TXApr 20, 1979 · N711BR · Substantial damage NTSB FTW77FQG20Accident · No injuriesClosedLockheed 18 · Big Lake, TXApr 5, 1977 · N7070 · Substantial damage NTSB FTW74DPD22Accident · No injuriesClosedLockheed 18 · Eastland, TXNov 2, 1973 · N984E · Substantial damage NTSB FTW74AF012Accident · 3 fatalClosedLockheed L-18 · Pecos, TXSep 4, 1973 · N669M · Destroyed NTSB UNK65X0415Accident · No injuriesClosedLockheed 18-56 · San Antonio, TXOct 24, 1964 · N6012 · Substantial damage