# NTSB investigations, 1990: Other

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB SEA91LA033](https://openairdocs.org/ntsb/SEA91LA033.md): Erco 415-C · Ola, ID · Accident · 1 fatal · Limited investigation · Final report · Dec 8, 1990 · N3522H · Destroyed
  > The pilot's failure to maintain sufficient altitude for terrain clearance. Also causal was the pilot's impairment due to alcohol. Contributing factors were the night light condition and the hilly terrain.
- [NTSB LAX90FA336](https://openairdocs.org/ntsb/LAX90FA336.md): Lockheed PV-2 · Lakeport, CA · Accident · 8 fatal · Field investigation · Final report · Sep 29, 1990 · N7250C · Destroyed
  > The pilot-in-command's failure to maintain airspeed during a pull-up from a low pass. Factors which contributed to the accident were: the pilot's poor judgement in buzzing the seaplanes which resulted in insufficient altitude to recover from the stall, and…
- [NTSB ANC90LA170](https://openairdocs.org/ntsb/ANC90LA170.md): Bell 206B · Kokhanok, AK · Accident · Serious injuries · Limited investigation · Final report · Sep 9, 1990 · N385EH · Substantial damage
  > The failure of the compressor end of the air compressor scroll to tee tube assembly causing the engine to spool down. The forced landing in eneven, unprepared, and lightly forested terrain were factors.
- [NTSB CHI90DEP09](https://openairdocs.org/ntsb/CHI90DEP09.md): Cessna 182 · Columbus, WI · Accident · Serious injuries · Final report · Aug 18, 1990 · N20824 · Substantial damage
  > The skydiver's panic and failure to depart the aircraft as instructed. Contributing was the skydiver's lack of total experience in this type of operation.
- [NTSB ANC90LA074](https://openairdocs.org/ntsb/ANC90LA074.md): Cessna 150 · Palmer, AK · Accident · No injuries · Limited investigation · Final report · May 23, 1990 · N66425 · Substantial damage
  > The flight instructor's failure to use carburetor heat during a simulated engine failure. The rough terrain and weather conditions conducive to carburetor icing were contributing factors.
- [NTSB CHI90FA117](https://openairdocs.org/ntsb/CHI90FA117.md): Bellanca 8KCAB · West Bend, WI · Accident · 2 fatal · Field investigation · Final report · Apr 24, 1990 · N2976R · Destroyed
  > Inflight failure of the right wing strut-to-spar attachment fitting due to fatigue initiated by improper welding techniques involving inadequate post-weld cooling control.
- [NTSB LAX90DUG04](https://openairdocs.org/ntsb/LAX90DUG04.md): Weber Christen Eagle II · Bermuda Dunes, CA · Accident · 2 fatal · Final report · Mar 18, 1990 · N234RW · Destroyed
  > The pilot-in-command's improper use of the flight controls while performing acrobatic maneuvers.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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") = 1990
  AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 800)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/800/cases?year=1990

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.