# NTSB investigations, 1990: Unknown

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 LAX91LA053](https://openairdocs.org/ntsb/LAX91LA053.md): Cessna T210N · Douglas, AZ · Accident · 2 fatal · Limited investigation · Final report · Dec 22, 1990 · XBBCR · Destroyed
  > An inflight loss of control of the airplane due to the pilot's physical impairment from the consumption of alcohol. A factor which contributed to the accident was an inoperative vacuum system.
- [NTSB MIA91GA034](https://openairdocs.org/ntsb/MIA91GA034.md): Asta N22S · Homestead Afb, FL · Accident · No injuries · Final report · Nov 28, 1990 · N5056D · Substantial damage
  > The bending overstress failure of the left main landing screwjack at an undetermined time during flight for undetermined reasons.
- [NTSB ANC91GAMS1](https://openairdocs.org/ntsb/ANC91GAMS1.md): Gulfstream Aerospace 690C · Deadhorse, AK · Accident · 3 fatal · Final report · Oct 12, 1990 · N45Q · Destroyed
  > Missing aircraft.
- [NTSB LAX91LA003](https://openairdocs.org/ntsb/LAX91LA003.md): Cessna 210 · Riverside, CA · Accident · 1 fatal · Limited investigation · Final report · Oct 6, 1990 · N9466T · Destroyed
  > Impairment of the pilot from use of drugs (cocaine), and his failure to maintain clearance (or altitude) from the mountain. Factors related to the accident were: darkness and the pilot's psychological condtion (depression).
- [NTSB LAX90DUG10](https://openairdocs.org/ntsb/LAX90DUG10.md): ELY Thorp T-18 · Claremont, CA · Accident · 2 fatal · Final report · Sep 25, 1990 · N9JE · Substantial damage
  > A loss of control for undetermined reason(s).
- [NTSB CHI90DEM09](https://openairdocs.org/ntsb/CHI90DEM09.md): Comben Bowers Flybaby IA · Cheboygan, MI · Accident · 1 fatal · Final report · Sep 13, 1990 · N1175B · Destroyed
  > Undetermined.
- [NTSB CHI90FAMS3](https://openairdocs.org/ntsb/CHI90FAMS3.md): Cessna 172M · Kewaunee, WI · Accident · 2 fatal · Missing aircraft · Final report · Aug 14, 1990 · N9529H · Destroyed
  > Undetermined.
- [NTSB ANC90LA143](https://openairdocs.org/ntsb/ANC90LA143.md): Piper PA-18-150 · Aniak, AK · Accident · 2 fatal · Limited investigation · Final report · Aug 12, 1990 · N3946Z · Substantial damage
  > Pilot lost control of the airplane as a result of encountering severe weather either during takeoff or landing. Contributing to the accident was the severe weather, rough water surface, and self-induced pressure to fly by the pilot.
- [NTSB MIA90LA170](https://openairdocs.org/ntsb/MIA90LA170.md): Piper PA-22-150 · Atlantic Ocean (Atlantic Ocean) · Accident · 4 fatal · Limited investigation · Final report · Aug 10, 1990 · N6946D · Destroyed
  > Undetermined. The airplane is missing.
- [NTSB DCA90IA048](https://openairdocs.org/ntsb/DCA90IA048.md): Airbus Industrie A320-211 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Aug 10, 1990 · N306US · Minor damage
  > The pilot(s) allowed the aircraft to rotate to an excessive nose high attitude, either during a takeoff or landing.
- [NTSB CHI90DEM08](https://openairdocs.org/ntsb/CHI90DEM08.md): Cessna 150L · Holland, MI · Accident · 2 fatal · Final report · Aug 7, 1990 · N741MF · Destroyed
  > Undetermined. Factors related to the accident were: darkness & impairment of the pilot due to carbon monoxide.
- [NTSB NYC90LA188](https://openairdocs.org/ntsb/NYC90LA188.md): Cessna 150M · Rochester, NH · Accident · No injuries · Limited investigation · Final report · Aug 4, 1990 · N45238 · Substantial damage
  > Undetermined.
- [NTSB SEA90FA146](https://openairdocs.org/ntsb/SEA90FA146.md): Wheeler Technology FT-210 · Linch, WY · Accident · 3 fatal · Field investigation · Final report · Jul 25, 1990 · N210EX · Destroyed
  > Failure of the pilot to maintain control of the aircraft and/or correct the stall/spin.
- [NTSB CHI90FA185](https://openairdocs.org/ntsb/CHI90FA185.md): Piper PA-28-140 · Grand Marais, MN · Accident · 3 fatal · Field investigation · Final report · Jul 14, 1990 · N6146W · Destroyed
  > Poor judgement of the pilot due to his impairment from consumption of alcohol, and his failure to maintain control of the aircraft. A factor related to the accident was: pilot fatigue due to lack of sleep.
- [NTSB LAX90FA211](https://openairdocs.org/ntsb/LAX90FA211.md): Beech 35-33 · Paso Robles, CA · Accident · 1 fatal · Field investigation · Final report · Jun 8, 1990 · N996T · Destroyed
  > Undetermined.
- [NTSB LAX90LA158](https://openairdocs.org/ntsb/LAX90LA158.md): Bellanca 8KCAB · Phoenix, AZ · Accident · 1 fatal · Limited investigation · Final report · Jun 7, 1990 · N50353 · Destroyed
  > The pilot failed to maintain control of the airplane.
- [NTSB NYC90GA105](https://openairdocs.org/ntsb/NYC90GA105.md): Bellanca 17-31A · Davis Park, NY · Accident · 4 fatal · Final report · May 12, 1990 · N7SF · Destroyed
  > The airplane impacting the water at a high speed for unknown reason(s).
- [NTSB CHI90FAMS2](https://openairdocs.org/ntsb/CHI90FAMS2.md): Piper PA-30B · Charlevoix, MI · Accident · 2 fatal · Missing aircraft · Final report · Apr 20, 1990 · N8333Y · Destroyed
  > The probable cause of this accident is undetermined.
- [NTSB MIA90FA106](https://openairdocs.org/ntsb/MIA90FA106.md): Piper PA-38-112 · Marco Island, FL · Accident · 1 fatal · Field investigation · Final report · Apr 18, 1990 · N91309 · Destroyed
  > Fuel exhaustion due to improper planning & decision by the pilot, and an inadvertent stall/spin while maneuvering for a forced landing.
- [NTSB MIA90LA061](https://openairdocs.org/ntsb/MIA90LA061.md): Cessna 152 · Missing, FL · Accident · 2 fatal · Limited investigation · Final report · Jan 24, 1990 · N4802B · Destroyed
  > Undetermined.
- [NTSB SEA90FA036](https://openairdocs.org/ntsb/SEA90FA036.md): Piper PA-18 · Longmire, WA · Accident · 2 fatal · Field investigation · Final report · Jan 20, 1990 · N7216K · Destroyed
  > Undetermined.
- [NTSB MIA90FA060](https://openairdocs.org/ntsb/MIA90FA060.md): Piper J-3 · Clewiston, FL · Accident · 2 fatal · Field investigation · Final report · Jan 20, 1990 · N88125 · Destroyed
  > Failure of the pilot to secure the flight control stick (inadequate preflight) before takeoff.
- [NTSB MIA90LA053](https://openairdocs.org/ntsb/MIA90LA053.md): Beech E185 · Wauchula, FL · Accident · No injuries · Limited investigation · Final report · Jan 13, 1990 · N50BP · Substantial damage
  > Loss of air pressure in the left main tire during flight, which resulted in a ground swerve during the landing and a nose over as the pilot was correcting with opposite brake and rudder.
- [NTSB DEN90FA041](https://openairdocs.org/ntsb/DEN90FA041.md): Cessna 182P · Tom'S Place, CA · Accident · 3 fatal · Field investigation · Final report · Jan 13, 1990 · N5831J · Destroyed
  > Continued flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain sufficient altitude above the ground. Factors related to the accident were: dark night, adverse weather conditions, self induced pressure, and spatial…
- [NTSB CHI90IA064](https://openairdocs.org/ntsb/CHI90IA064.md): Boeing 747-151 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Jan 10, 1990 · N602US · Minor damage
  > A fire in the aft cargo compartment for undetermined reasons(s).

## 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 = 990)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/990/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.