# NTSB investigations, CO: 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 CEN18LA162](https://openairdocs.org/ntsb/CEN18LA162.md): Cessna 182 · Broomfield, CO · Accident · Minor injuries · Class 3 · Limited · Final report · May 7, 2018 · N3292Y · Substantial damage
  > The overstress fracture of the upper link of the nose landing gear torque link assembly, which resulted in the pilot’s inability to maintain directional control during landing.
- [NTSB ENG12IA014](https://openairdocs.org/ntsb/ENG12IA014.md): Beech 1900D · Denver International Airport, CO · Incident · No injuries · Incident investigation · Final report · Feb 17, 2012 · N210GL · Minor damage
  > A failure of the nose landing gear end cap due to fatigue. Contributing to the failure were the ineffective inspection and the unknown effect of grain direction on fatigue life.
- [NTSB ENG12IA013](https://openairdocs.org/ntsb/ENG12IA013.md): Beech 1900D · Denver International Airport, CO · Incident · No injuries · Incident investigation · Final report · Dec 3, 2011 · N247GL · Minor damage
  > A failure of the nose landing gear end cap due to fatigue. Contributing to the failure were the ineffective inspection and the unknown effect of grain direction on fatigue life.
- [NTSB FTW98LA353](https://openairdocs.org/ntsb/FTW98LA353.md): de Havilland DH-8-202 · Telluride, CO · Accident · No injuries · Limited investigation · Final report · Jul 27, 1998 · N449YV · Substantial damage
  > The inadequate chocks and inadequate chocking procedures by the operator. Factors were the unavailability of the parking brake and sloping terrain.
- [NTSB DEN91DTE02](https://openairdocs.org/ntsb/DEN91DTE02.md): Cresawn Pitts S1-C · Calhan, CO · Accident · 1 fatal · Final report · Sep 3, 1991 · N939PC · Substantial damage
  > The pilot's failure to attain adequate aircraft control to avoid terrain collision.
- [NTSB DEN91FA110](https://openairdocs.org/ntsb/DEN91FA110.md): Cessna 177 · Hygiene, CO · Accident · 1 fatal · Field investigation · Final report · Aug 6, 1991 · N3185T · Destroyed
  > Suicide. A factor related to the accident was: the pilot's other psychological condition.
- [NTSB DEN84LA074](https://openairdocs.org/ntsb/DEN84LA074.md): Cessna 210D · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Jan 25, 1984 · N45AM · Substantial damage
  > The acft was landed with the main gear retracted after attempts to extend them failed. After landing the acft departed the right side of the rwy. Post accident examination revealed that the secondary relief valve had failed in the hydraulic power pack. This…
- [NTSB DEN84IA070](https://openairdocs.org/ntsb/DEN84IA070.md): Swearingen SA227-AC · Durango, CO · Incident · No injuries · Incident investigation · Final report · Jan 15, 1984 · N31088 · Minor damage
  > According to the captain, the coplt was making the landing & crossed the threshold at 50 to 60 ft AGL at 110 to 115 KTS. He said a slightly higher airspeed was used to compensate for a small abount of ice that remained on the leading edge of the wings. In the…
- [NTSB DEN82IA192](https://openairdocs.org/ntsb/DEN82IA192.md): Fairchild/Swearingen SA226TC · Denver, CO · Incident · No injuries · Incident investigation · Final report · Sep 13, 1982 · N5471M · Minor damage
  > During takeoff on a maintenance ferry flight, with a mechanic flying from the right seat, the aircraft would not accelerate above V1 and would not rotate even with full aft yoke. The captain aborted the takeoff and the aircraft was stopped at the end of the…

## 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 c."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA'
  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?state=CO

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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.