NTSB investigations, 1998

20 cases where the phase of flight was Unknown.

Cases per year

19622026
NTSB investigations, 1998 per year, 1962–2026: 1,976 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
2026217

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\") = 1998
    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 NYC99FA007Accident · 2 fatalField investigationFinal reportCessna 172G · Bennington, VTThe pilot's VFR flight into IMC. Contributing factors were the pilot's lack of recent experience, mountainous/hilly terrain, and clouds.Oct 12, 1998 · N1330F · DestroyedNTSB CHI99LA009Accident · No injuriesLimited investigationFinal reportCessna 150F · Muskegon, MIpoor in-flight planning by an unqualified person which resulted in fuel exhaustion. A factor was the swamp in which the forced landing was made.Oct 5, 1998 · N8655S · Substantial damageNTSB ANC99LA005Accident · 1 fatalLimited investigationFinal reportBeech G-35 · Neah Bay, WAUndetermined. Missing Aircraft.Oct 4, 1998 · N4479D · DestroyedNTSB ANC98FA168Accident · 1 fatalField investigationFinal reportCessna TU-206G · Ketchikan, AKThe pilot's continued VFR flight into instrument meteorological conditions. Contributing factors were low ceilings and mountainous/hilly terrain.Sep 29, 1998 · N4820U · DestroyedNTSB ANC98FA152Accident · 1 fatalField investigationFinal reportCessna 207 · Kotzebue, AKThe pilot's continued VFR flight into instrument meteorological conditions. Factors associated with the accident were low ceilings, mountainous/hilly terrain features, rain, and fog.Sep 17, 1998 · N1809Q · DestroyedNTSB MIA98LA242Accident · No injuriesLimited investigationFinal reportCessna 177RG · Covington, GAslippage of the No. 3 connecting rod bearing resulting in blockage of the oil port, oil starvation, and subsequent connecting rod failure. A factor was the fence.Sep 5, 1998 · N2679V · Substantial damageNTSB ATL98FAMS1Accident · 4 fatalMissing aircraftFinal reportPiper PA-28-181 · MissingThe aircraft is missing.Aug 18, 1998 · N25626 · DestroyedNTSB FTW98FA340Accident · 1 fatalField investigationFinal reportPiper J3C-85 · Seminole, TXThe pilot's failure to maintain aircraft control.Jul 31, 1998 · N7018H · DestroyedNTSB CHI98LA368Accident · 2 fatalLimited investigationFinal reportGrumman American AA-5B · Deadwood, SDThe pilot's failure to maintain adequate clearance from the trees.Jul 26, 1998 · N4535P · DestroyedNTSB SEA98LA145Accident · 1 fatalLimited investigationFinal reportBaggarley Glasair II-FT · Vernonia, ORA loss of aircraft control for undetermined reasons.Jul 20, 1998 · N31066 · Substantial damageNTSB FTW98FA307Accident · Serious injuriesField investigationFinal reportCessna 172N · Lincoln, TXThe #3 cylinder exhaust valve rocker arm fulcrum retaining stud backing out of its stud-tapped hole due to the improper tapping of the stud hole by unknown maintenance personnel. Contributing factors were the transmission wire, sign and gasoline pump.Jul 11, 1998 · N5632E · DestroyedNTSB MIA99FA050Accident · 2 fatalField investigationFinal reportCessna 172L · Macclenny, FLThe student pilot's attempted VFR flight into instrument meteorological conditions, resulting in a subsequent in-flight collision with trees and terrain. Contributing factors were, haze/smoke, the student pilot's failure to obtain a preflight weather…Jun 23, 1998 · N3853Q · DestroyedNTSB NYC98FA107Accident · 2 fatalField investigationFinal reportErcoupe ERCO-415C · New Lisbon, NYDetonation within the No. 2 cylinder resulting in melting and breaching of the piston, and the pilot's selection of unsuitable terrain for landing. Contributing factors were the uphill terrain encountered during the landing and the visual perception…May 16, 1998 · N3230H · DestroyedNTSB ANC98FA043Accident · 1 fatalField investigationFinal reportTaylorcraft BL12 · Sitka, AKThe pilot's attempted VFR flight into instrument meteorological conditions. Contributing factors were clouds, the pilot's lack of instrument flight experience, obscuration and mountainous terrain.Apr 28, 1998 · N33902 · DestroyedNTSB ATL98FA063Accident · 2 fatalField investigationFinal reportWilliam Sargent Lancair 235 · Newport, TNThe pilot's attempt to operate in instrument meteorological conditions and his failure to maintain clearance with the surrounding terrain. Contributing factors were clouds and the mountainous/hilly terrain.Apr 17, 1998 · N813Y · DestroyedNTSB SEA98FA101Accident · 2 fatalField investigationFinal reportPiper PA-46-350P · Bigfork, MTThe pilot's failure to maintain terrain clearance for undetermined reasons. Contributing factors were the mountainous terrain, trees, dark night conditions, clouds and pilot fatigue.Apr 11, 1998 · N9247W · DestroyedNTSB ANC98GA036Accident · 2 fatalFinal reportCessna 185F · Nightmute, AKThe pilot's continued VFR flight into instrument meteorological conditions which resulted in spatial disorientation and subsequent loss of aircraft control. Factors in the accident were meteorological conditions consisting of low ceilings, and blowing snow,…Apr 9, 1998 · N5485R · DestroyedNTSB FTW98FA167Accident · 1 fatalField investigationFinal reportBell 206B · Round Top, TXThe pilot's attempted VFR flight into instrument meteorological conditions. Contributing factors were fog, low ceilings, and trees.Apr 2, 1998 · N7734A · DestroyedNTSB MIA98FAMS2Accident · 1 fatalMissing aircraftFinal reportCessna 182H · MissingUndetermined.Mar 28, 1998 · N8460S · DestroyedNTSB CHI98FA099Accident · 1 fatalField investigationFinal reportCessna T210L · Orleans, INThe pilot's attempted VFR flight into instrument meteorological conditions and his subsequent failure to maintain clearance with trees. Contributing factors were the pilot's impairment from prescription drugs, low ceilings, fog, trees, and hilly terrain.Mar 5, 1998 · N2546S · Destroyed