NTSB investigations, WI

35 cases where the phase of flight was Uncontrolled descent.

Cases per year

19652026
NTSB investigations, WI per year, 1965–2026: 35 cases
19657
19661
19671
19681
19706
19711
19723
19731
19741
19751
19762
19772
19781
19792
19801
19812
19861
19981

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 c.\"eventStateOrRegion\" = 'WI' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 650)
  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 CHI98LA339Accident · No injuriesLimited investigationFinal reportEnstrom 480 · Green Bay, WIthe pilot's failure to maintain adequate rotor rpm during a practice autorotation.Sep 16, 1998 · N142CC · Substantial damageNTSB CHI86LA097Accident · Serious injuriesLimited investigationFinal reportCessna 172M · Milwaukee, WIThe aircraft was approximately 180 lbs over max recommended takeoff gross weight and used almost all of a 3560 foot runway to take off. The pilot stated that after liftoff the aircraft would not turn left and began to turn right on its own. He climbed to…Mar 1, 1986 · N80167 · DestroyedNTSB CHI81FA034Accident · 2 fatalClosedCessna 172 · Lake Geneva, WIMar 10, 1981 · N733XU · DestroyedNTSB CHI81FA026Accident · 3 fatalClosedPiper PA-28 · Waupun, WIFeb 18, 1981 · N8422C · DestroyedNTSB CHI81FA014Accident · 2 fatalClosedBeech G35 · Harding, WIDec 30, 1980 · N190B · DestroyedNTSB CHI80FA006Accident · 2 fatalClosedCessna 172 · Fall Creek, WIOct 20, 1979 · N5072R · DestroyedNTSB CHI79FA081Accident · 2 fatalClosedCessna 150 · Porcupine, WISep 23, 1979 · N7853E · DestroyedNTSB CHI79FA006Accident · 2 fatalClosedPiper PA-24 · Baraboo, WIOct 10, 1978 · N5696P · DestroyedNTSB CHI77FA049Accident · 4 fatalClosedPiper PA-24 · Grafton, WIJun 11, 1977 · N6349P · DestroyedNTSB CHI77FA026Accident · 1 fatalClosedBeech 58 · Necedah, WIFeb 3, 1977 · N177HC · DestroyedNTSB CHI76FA003Accident · 1 fatalClosedCessna 150M · Amherst, WIOct 20, 1976 · N704PN · DestroyedNTSB CHI76AC086Accident · 2 fatalClosedCessna 207 · East Troy, WIAug 17, 1976 · N91061 · DestroyedNTSB CHI75AC069Accident · 3 fatalClosedBeech A24R · Beaver, WIMar 21, 1975 · N9707Q · DestroyedNTSB CHI74DEP37Accident · No injuriesClosedPiper PA-28 · Lacrosse, WIMar 23, 1974 · N15255 · Substantial damageNTSB CHI74AC025Accident · 4 fatalClosedCessna 411 · Delavan, WISep 21, 1973 · N3243R · DestroyedNTSB CHI73DEP27Accident · No injuriesClosedGrumman G-164 · Antigo, WISep 11, 1972 · N73W · Substantial damageNTSB CHI72ACO96Accident · 1 fatalClosedCessna 207 · Cochrane, WIJun 2, 1972 · N91005 · DestroyedNTSB CHI72FEP35Accident · Serious injuriesClosedMustang M-1 · Appleton, WIMar 26, 1972 · N5RK · DestroyedNTSB CHI72AC031Accident · 2 fatalClosedCessna 150F · Tomahawk, WIOct 1, 1971 · N7801F · DestroyedNTSB CHI71AC034Accident · 4 fatalClosedPiper PA-24 · Weston, WINov 18, 1970 · N7880P · DestroyedNTSB CHI71AC026Accident · 3 fatalClosedCessna 310D · Watertown, WIOct 20, 1970 · N6765T · DestroyedNTSB CHI71AC018Accident · 4 fatalClosedBeech J35 · Plain, WISep 6, 1970 · N622T · DestroyedNTSB CHI70AC082Accident · 3 fatalClosedNavion A · Evansville, WIMay 23, 1970 · N5105K · DestroyedNTSB CHI70AC075Accident · 2 fatalClosedCessna 150J · Fond Du Lac, WIApr 28, 1970 · N5539G · DestroyedNTSB CHI70FDJ06Accident · Minor injuriesClosedBell 47G-2 · Oshkosh, WIFeb 1, 1970 · N5158B · Substantial damageNTSB CHI68A0107Accident · 1 fatalClosedBell 47J-2 · Rice Lake, WIJun 14, 1968 · N73258 · DestroyedNTSB CHI68A0049Accident · 3 fatalClosedMooney M20C · Cable, WINov 23, 1967 · N1383W · DestroyedNTSB CHI67A0067Accident · 4 fatalClosedPiper PA-28 · Madison, WINov 22, 1966 · N7901W · DestroyedNTSB CHI66F0521Accident · Serious injuriesClosedCessna 172D · Walworth, WIDec 10, 1965 · N2085Y · DestroyedNTSB CHI66A0038Accident · 2 fatalClosedCessna 310F · Minocqua, WIOct 17, 1965 · N188RT · DestroyedNTSB CHI66A0028Accident · 1 fatalClosedAeronca 7AC · Whitewater, WISep 17, 1965 · N2334E · DestroyedNTSB CHI66A0019Accident · 1 fatalClosedMooney M-20C · Beloit, WIAug 20, 1965 · N6701U · DestroyedNTSB CHI66A0009Accident · 1 fatalClosedCessna 150C · Wausau, WIJul 18, 1965 · N7936Z · DestroyedNTSB CHI66A0002Accident · 1 fatalClosedPiper PA-16 · Lake Delton, WIJul 4, 1965 · N6866K · DestroyedNTSB CHI65A0090Accident · 2 fatalClosedAeronca 7AC · East Troy, WIApr 10, 1965 · N84981 · Destroyed