NTSB investigations, 1971

22 cases where the phase of flight was Unknown.

Cases per year

19622026
NTSB investigations, 1971 per year, 1962–2026: 1,978 cases
19621
19631
196429
196526
196636
196748
196859
196931
197033
197122
197230
197328
197427
197540
197615
197730
197838
197941
198030
198127
198251
198346
198447
198541
198618
198723
198824
198920
199025
199115
199222
199322
199412
199513
199619
199716
199820
199923
200013
200118
20029
200312
20046
200511
20067
200710
20087
200910
201020
201116
201219
201314
201425
201527
201635
201737
201845
201926
202039
202160
202271
202340
202460
202573
2026219

Latest cases

Query with SQL
duckdb -csv -c "WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
    crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
    current_codes AS (
      SELECT e.case_mkey, TRY_CAST(e.\"tier1Number\" AS INTEGER) AS code,
        row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e.\"isDefiningEvent\", false) DESC, e.position) AS n
      FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
      WHERE e.aircrafts_position = 1 AND e.\"tier1Number\" GLOB '[1-9][0-9]*'
        AND (e.\"isDefiningEvent\" OR e.case_mkey IN (SELECT \"mKey\" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE \"isPre1982\"))
    ),
    phases AS (
      SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
      FROM current_codes WHERE n = 1
      UNION ALL
      SELECT o.case_mkey, 'older', o.\"phaseOfFlightCode\", w.main
      FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o.\"phaseOfFlightCode\"
      WHERE o.aircrafts_position = 1 AND o.\"occurrenceNumber\" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
    ),
    case_phases AS (
      SELECT p.*, c.\"eventDate\", c.\"highestInjuryLevel\" = 'Fatal' AS fatal, a.aircraft_model_code
      FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = p.case_mkey
      LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
      WHERE c.\"eventDate\" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
    )
  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 year(c.\"eventDate\") = 1971
    AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 990)
  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.

NTSB MIA72AM059Accident · 1 fatalClosedCessna 150J · Missing AircraftDec 21, 1971 · N61155 · DestroyedNTSB MKC73DCD19Accident · No injuriesClosedAeronca 7AC · Decorah, IADec 4, 1971 · N85286 · Substantial damageNTSB OAK72DJA09Accident · 1 fatalClosedCessna 150G · Honokaa, HIDec 2, 1971 · N3904J · DestroyedNTSB CHI72AC047Accident · 1 fatalClosedBeech A23 · Missing AircraftNov 25, 1971 · N3500R · DestroyedNTSB FTW72DQD16Accident · 4 fatalClosedCessna 172E · S.Buenaventra, MexicoNov 5, 1971 · N3602S · DestroyedNTSB MKC72DCD41Accident · No injuriesClosedPiper PA-12 · Harlan, IAOct 15, 1971 · N7982H · Substantial damageNTSB DEN72FTE31Accident · No injuriesClosedPiper PA-28 · Littleton, COSep 11, 1971 · N9162W · Substantial damageNTSB MIA72AM017Accident · 3 fatalClosedPiper PA-28 · Sanibel, FLAug 22, 1971 · N5324S · DestroyedNTSB ANC72AA005Accident · 2 fatalClosedCessna 150G · Petersburg, AKJul 25, 1971 · N8697J · Substantial damageNTSB NYC72AN005Accident · 2 fatalClosedMooney M20F · Plum Borough, PAJul 8, 1971 · N9651M · Substantial damageNTSB FTW72AF013Accident · 2 fatalClosedPiper PA-24 · Missing AircraftJul 7, 1971 · N8779P · DestroyedNTSB MKC72FCA01Accident · No injuriesClosedCessna 172K · Bonne Terre, MOJul 5, 1971 · N7480G · Substantial damageNTSB NYC71AN126Accident · 4 fatalClosedCessna 172 · Missing AircraftJun 22, 1971 · N3831S · DestroyedNTSB MIA71AM097Accident · 2 fatalClosedCessna 337A · Jackson, MSMay 16, 1971 · N5388S · DestroyedNTSB FTW71FRJ34Accident · Serious injuriesClosedAeronca 7AC · Waterproof, LAMay 15, 1971 · N83076 · DestroyedNTSB FTW71DRH35Accident · Serious injuriesClosedMaule M4210C · Botapelis, MexicoMay 10, 1971 · N2001U · Substantial damageNTSB ANC71AA055Accident · 1 fatalClosedCessna 180 · Missing AircraftApr 17, 1971 · N7932V · DestroyedNTSB MIA71AM084Accident · 1 fatalClosedCessna 177B · Missing AircraftMar 20, 1971 · N30844 · DestroyedNTSB FTW71DPA25Accident · 1 fatalClosedPiper PA-24 · Baborigane, MexicoMar 14, 1971 · N9104D · DestroyedNTSB NYC71AN085Accident · 5 fatalClosedAero Comdr 1121A · South Burlington, VTJan 27, 1971 · N400CP · DestroyedNTSB OAK71FJA11Accident · No injuriesClosedGrumman SCAN30 · Ebeye, MontserratJan 22, 1971 · N4452 · Substantial damageNTSB CHI71AC050Accident · 2 fatalClosedCessna 172 · Missing AircraftJan 3, 1971 · N8342L · Destroyed