# NTSB investigations, UT: Uncontrolled descent

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 WPR26FA108](https://openairdocs.org/ntsb/WPR26FA108.md): Vans RV-8 · Hurricane, UT · Accident · 1 fatal · Class 3 · Field · Preliminary report · Feb 28, 2026 · N80AR · Substantial damage
  > On February 28, 2026, at about 1005 mountain standard time, an experimental amateur-built, Vans Aircraft, RV-8, N80AR, was substantially damaged when it was involved in an accident near Hurricane, Utah. The pilot was fatally injured. The airplane was operated…
- [NTSB DEN02LA109](https://openairdocs.org/ntsb/DEN02LA109.md): Sabian Rans S-12XL · Mexican Hat, UT · Accident · 2 fatal · Limited investigation · Final report · Sep 22, 2002 · N725ST · Destroyed
  > the pilot's inadequate in-flight planning and decision making (flying up a canyon with insufficient altitude) which resulted in an inadvertent stall/mush, and the pilot's failure to follow the proper emergency procedures for activating his Ballistic Recovery…
- [NTSB SEA95LA070](https://openairdocs.org/ntsb/SEA95LA070.md): Quicksilver MXL2 · Hildale, UT · Accident · 2 fatal · Limited investigation · Final report · Mar 13, 1995 · UNREG · Destroyed
  > The pilot's failure to maintain adequate airspeed while banking the airplane. This led to an unrecoverable aerodynamic stall in close proximity to the ground. Factors contributing to the accident are the pilot exceeding the airplane's weight and balance…
- [NTSB DEN81FA012](https://openairdocs.org/ntsb/DEN81FA012.md): Beech 76 · Morgan, UT · Accident · 1 fatal · Closed · Nov 23, 1980 · N6048Y · Destroyed
- [NTSB DEN80FA037](https://openairdocs.org/ntsb/DEN80FA037.md): Globe GC-1B · Spanish Fork, UT · Accident · 1 fatal · Closed · Jun 7, 1980 · N211M · Destroyed
- [NTSB DEN80FA021](https://openairdocs.org/ntsb/DEN80FA021.md): Mooney M20F · Grantsville, UT · Accident · 2 fatal · Closed · Jan 27, 1980 · N6439Q · Destroyed
- [NTSB DEN79AA028](https://openairdocs.org/ntsb/DEN79AA028.md): Rockwell 114 · Fairfield, UT · Accident · 4 fatal · Closed · Mar 4, 1979 · N4804W · Destroyed
- [NTSB DEN78FA036](https://openairdocs.org/ntsb/DEN78FA036.md): Cessna TP206C · Angle, UT · Accident · 1 fatal · Closed · Apr 8, 1978 · N8697Z · Destroyed
- [NTSB DEN78FA002](https://openairdocs.org/ntsb/DEN78FA002.md): Piper PA-32 · Cedar Fort, UT · Accident · 7 fatal · Closed · Sep 30, 1977 · N5400F · Substantial damage
- [NTSB DEN77FA054](https://openairdocs.org/ntsb/DEN77FA054.md): Cessna 172 · Nsalina, UT · Accident · 3 fatal · Closed · Aug 17, 1977 · N7985U · Destroyed
- [NTSB DEN77FA036](https://openairdocs.org/ntsb/DEN77FA036.md): Cessna TU206F · Duchesne, UT · Accident · 2 fatal · Closed · Apr 12, 1977 · N1066V · Destroyed
- [NTSB DEN77FA022](https://openairdocs.org/ntsb/DEN77FA022.md): Cessna 172 · Moab, UT · Accident · 2 fatal · Closed · Jan 24, 1977 · N4171F · Destroyed
- [NTSB DEN7KAD061](https://openairdocs.org/ntsb/DEN7KAD061.md): Cessna 182E · Cove Fort, UT · Accident · 2 fatal · Closed · Jun 17, 1975 · N3361Y · Destroyed
- [NTSB DEN75AD040](https://openairdocs.org/ntsb/DEN75AD040.md): Beech 95-B55 · Riverton, UT · Accident · 3 fatal · Closed · Feb 1, 1975 · N157D · Destroyed
- [NTSB DEN75AD034](https://openairdocs.org/ntsb/DEN75AD034.md): Cessna 150K · Tremonton, UT · Accident · 2 fatal · Closed · Dec 20, 1974 · N6359G · Destroyed
- [NTSB DEN75AD002](https://openairdocs.org/ntsb/DEN75AD002.md): Piper PA-28 · Nephi, UT · Accident · 2 fatal · Closed · Jul 12, 1974 · N8535W · Destroyed
- [NTSB DEN73AD048](https://openairdocs.org/ntsb/DEN73AD048.md): Cessna 205A · Parowan, UT · Accident · 1 fatal · Closed · Apr 14, 1973 · N8490Z · Destroyed
- [NTSB DEN73AD036](https://openairdocs.org/ntsb/DEN73AD036.md): Cessna 210 · Milford, UT · Accident · 4 fatal · Closed · Feb 8, 1973 · N9418X · Destroyed
- [NTSB DEN73DTM05](https://openairdocs.org/ntsb/DEN73DTM05.md): Cessna 150K · Park City, UT · Accident · Minor injuries · Closed · Aug 22, 1972 · N8365M · Substantial damage
- [NTSB DEN72AD034](https://openairdocs.org/ntsb/DEN72AD034.md): Cessna T210F · Lehi, UT · Accident · 1 fatal · Closed · Feb 1, 1972 · N6762R · Destroyed
- [NTSB DEN72AD028](https://openairdocs.org/ntsb/DEN72AD028.md): Mooney M20A · Scipio, UT · Accident · 2 fatal · Closed · Jan 2, 1972 · N8133E · Destroyed
- [NTSB DEN71AD010](https://openairdocs.org/ntsb/DEN71AD010.md): Cessna 182N · Escalante, UT · Accident · 1 fatal · Closed · Sep 4, 1970 · N92928 · Destroyed
- [NTSB DEN70FXT07](https://openairdocs.org/ntsb/DEN70FXT07.md): Brantly B-2 · Murray, UT · Accident · Serious injuries · Closed · Mar 26, 1970 · N5917X · Substantial damage
- [NTSB DEN70A0033](https://openairdocs.org/ntsb/DEN70A0033.md): Cessna P206 · Bryce Canyon, UT · Accident · 3 fatal · Closed · Nov 8, 1969 · N2502X · Destroyed
- [NTSB DEN70F0005](https://openairdocs.org/ntsb/DEN70F0005.md): Piper PA-28 · North Ogden, UT · Accident · No injuries · Closed · Jun 14, 1969 · N5029W · Substantial damage
- [NTSB DEN69A0009](https://openairdocs.org/ntsb/DEN69A0009.md): Cessna 172E · Kamas, UT · Accident · 1 fatal · Closed · Aug 20, 1968 · N3024U · Destroyed
- [NTSB DEN68A0039](https://openairdocs.org/ntsb/DEN68A0039.md): Cessna 210 · Eureka, UT · Accident · 3 fatal · Closed · Feb 21, 1968 · N1838F · Destroyed
- [NTSB DEN67A0047](https://openairdocs.org/ntsb/DEN67A0047.md): Cessna 182C · Plymouth, UT · Accident · 2 fatal · Closed · Feb 14, 1967 · N8674T · Destroyed
- [NTSB DEN67A0043](https://openairdocs.org/ntsb/DEN67A0043.md): Piper PA-28 · Brigham City, UT · Accident · 1 fatal · Closed · Jan 31, 1967 · N8317R · Destroyed
- [NTSB DEN66A0023](https://openairdocs.org/ntsb/DEN66A0023.md): Bell 47G3B1 · Monticello, UT · Accident · 1 fatal · Closed · Sep 28, 1965 · N1127W · Destroyed
- [NTSB UNK65X0365](https://openairdocs.org/ntsb/UNK65X0365.md): Piper PA-18 · Dugway, UT · Accident · 2 fatal · Closed · Oct 21, 1964 · N5031K · Destroyed
- [NTSB UNK64X0553](https://openairdocs.org/ntsb/UNK64X0553.md): Cessna 172D · Provo, UT · Accident · 2 fatal · Closed · Feb 13, 1964 · N2970U · Destroyed
- [NTSB UNK64X0257](https://openairdocs.org/ntsb/UNK64X0257.md): Bc65 DC65 · Francis Peak, UT · Accident · Serious injuries · Closed · Jan 16, 1964 · N29616 · Destroyed

## 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" = 'UT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 650)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/650/cases?state=UT

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