# NTSB investigations, 2001: 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 SEA02LA037](https://openairdocs.org/ntsb/SEA02LA037.md): Mooney M20C · Netarts, OR · Accident · 2 fatal · Limited investigation · Final report · Dec 11, 2001 · N5774Q · Destroyed
  > Reason for occurrence undetermined.
- [NTSB LAX02LA027](https://openairdocs.org/ntsb/LAX02LA027.md): Cessna 210K · North Las Vegas, NV · Accident · No injuries · Limited investigation · Final report · Nov 10, 2001 · N8232M · Substantial damage
  > The failure of maintenance personnel to properly diagnose the cause of a reported maintenance discrepancy resulting in the airplane being released from an annual inspection with a worn hydraulic pump which lacked sufficient output to operate the landing gear.…
- [NTSB SEA02FA011](https://openairdocs.org/ntsb/SEA02FA011.md): Cessna A185F · Lucile, ID · Accident · 1 fatal · Field investigation · Final report · Nov 6, 2001 · N61909 · Destroyed
  > The pilot's failure to maintain adequate altitude above, and/or clearance with, mountainous terrain during night visual flight rules flight. Factors included mountainous terrain and dark night light conditions.
- [NTSB NYC02LA019](https://openairdocs.org/ntsb/NYC02LA019.md): Norton/Cloeren Titan Tornado II · New Windsor, MD · Accident · 2 fatal · Limited investigation · Final report · Oct 30, 2001 · N996T · Destroyed
  > Loss of power for an undetermined reason.
- [NTSB MIA02FAMS1](https://openairdocs.org/ntsb/MIA02FAMS1.md): Ayres S2RHG-T65 · Accident · 1 fatal · Missing aircraft · Final report · Oct 1, 2001 · N3101G · Destroyed
  > The airplane and pilot are missing.
- [NTSB FTW01LA180](https://openairdocs.org/ntsb/FTW01LA180.md): Cessna 210 · Fort Smith, AR · Accident · No injuries · Limited investigation · Final report · Aug 12, 2001 · N8137L · Substantial damage
  > the overload fracture of the left main landing gear actuator which resulted in the loss of all hydraulic fluid and led to a wheels up landing.
- [NTSB CHI01FA257](https://openairdocs.org/ntsb/CHI01FA257.md): Schweizer 269C · Waterloo, IN · Accident · 2 fatal · Field investigation · Final report · Aug 5, 2001 · N6129M · Substantial damage
  > Aircraft control not maintained for undetermined reasons.
- [NTSB ANC01LA097](https://openairdocs.org/ntsb/ANC01LA097.md): Piper PA-12 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Aug 2, 2001 · N7775H · Substantial damage
  > The loss of left brake pressure due to a missing hydraulic brake fitting.
- [NTSB SEA01LA141](https://openairdocs.org/ntsb/SEA01LA141.md): Taylor Smith Mini DSA-1 · Sultan, WA · Accident · No injuries · Limited investigation · Final report · Jul 22, 2001 · N53BT · Substantial damage
  > The separation/loss of the bolt and castle nut which connected the elevator bellcrank to the control stick pushrod resulting in a disconnect between the cockpit and the control surface and ultimately, the pilot's total loss of pitch control.
- [NTSB CHI01LA236](https://openairdocs.org/ntsb/CHI01LA236.md): Champion 7KCAB · Brooklyn, MI · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2001 · N7537F · Substantial damage
  > The forced landing for undetermined reasons. A factor to the accident was the corn crop.
- [NTSB ANC01FA084](https://openairdocs.org/ntsb/ANC01FA084.md): Maule M-5-235C · Bettles, AK · Accident · 4 fatal · Field investigation · Final report · Jul 15, 2001 · N9237E · Substantial damage
  > The pilot's inadvertent stall of the airplane during an unknown phase of flight.
- [NTSB SEA01LA131](https://openairdocs.org/ntsb/SEA01LA131.md): Rockwell International S-2R · Nez Perce, ID · Accident · 1 fatal · Limited investigation · Final report · Jul 14, 2001 · N5011X · Substantial damage
  > The pilot's failure to maintain terrain clearance for undetermined reasons.
- [NTSB FTW01FA151](https://openairdocs.org/ntsb/FTW01FA151.md): Ercoupe 415-CD · McAlester, OK · Accident · 1 fatal · Field investigation · Final report · Jun 24, 2001 · N3962H · Destroyed
  > the inadvertent stall by the pilot-in-command.
- [NTSB SEA01LA102](https://openairdocs.org/ntsb/SEA01LA102.md): Piper PA-18-105 Special · Wilbur, WA · Accident · 1 fatal · Limited investigation · Final report · May 22, 2001 · N7155K · Substantial damage
  > A collision with terrain for undetermined reasons.
- [NTSB SEA01FA085](https://openairdocs.org/ntsb/SEA01FA085.md): MBB BO-105C · Medford, OR · Accident · No injuries · Field investigation · Final report · May 5, 2001 · N105RH · Destroyed
  > A leaking engine oil outlet line fitting in the #1 engine compartment, resulting in an oil fire in the engine compartment.
- [NTSB SEA01FA070](https://openairdocs.org/ntsb/SEA01FA070.md): Cessna 182P · Fairfield, WA · Accident · 2 fatal · Field investigation · Final report · Apr 11, 2001 · N21565 · Substantial damage
  > The pilot's failure to maintain altitude and/or clearance over trees, resulting in a collision with trees, separation of a wing and uncontrolled collision with terrain. Factors included the pilot's inadequate preflight planning and preparation, dark night…
- [NTSB SEA01LA042](https://openairdocs.org/ntsb/SEA01LA042.md): Cessna 182R · Renton, WA · Accident · No injuries · Limited investigation · Final report · Jan 28, 2001 · N7568T · Substantial damage
  > The worn condition of the hydraulic pump gears which resulted in a continuous running pump, subsequent pump motor overheat and eventually the tripping of the pump motor circuit breaker. An additional cause was the pilot's failure to verify that the landing…
- [NTSB LAX01FAMS1](https://openairdocs.org/ntsb/LAX01FAMS1.md): Cessna 172N · Monterey, CA · Accident · 1 fatal · Missing aircraft · Final report · Jan 15, 2001 · N6452D · Destroyed
  > Undetermined.

## 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") = 2001
  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=2001

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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.