# NTSB investigations, SD: 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 MKC80FA021](https://openairdocs.org/ntsb/MKC80FA021.md): Beech 95-B55 · Hot Springs, SD · Accident · 4 fatal · Closed · Feb 13, 1980 · N8592R · Substantial damage
- [NTSB MKC78FA011](https://openairdocs.org/ntsb/MKC78FA011.md): Beech C33 · Canton, SD · Accident · 1 fatal · Closed · Dec 1, 1977 · N9435S · Destroyed
- [NTSB MKC78FA009](https://openairdocs.org/ntsb/MKC78FA009.md): Cessna 182M · Hill City, SD · Accident · 1 fatal · Closed · Nov 29, 1977 · N71026 · Destroyed
- [NTSB MKC77FA037](https://openairdocs.org/ntsb/MKC77FA037.md): Piper PA-28 · Eagle Butte, SD · Accident · 3 fatal · Closed · Sep 3, 1977 · N7731W · Destroyed
- [NTSB MKC76FTK02](https://openairdocs.org/ntsb/MKC76FTK02.md): Bell 47-G2A · Keystone, SD · Accident · Minor injuries · Closed · Jul 25, 1975 · N7578 · Substantial damage
- [NTSB MKC74AK032](https://openairdocs.org/ntsb/MKC74AK032.md): Bellanca 7GCBC · Lebanon, SD · Accident · 1 fatal · Closed · Dec 15, 1973 · N12201 · Destroyed
- [NTSB MKC74AK011](https://openairdocs.org/ntsb/MKC74AK011.md): Cessna 180 · Wessington, SD · Accident · 1 fatal · Closed · Sep 8, 1973 · N9170C · Destroyed
- [NTSB MKC73AK049](https://openairdocs.org/ntsb/MKC73AK049.md): Piper PA-28 · Mitchell, SD · Accident · 2 fatal · Closed · Jan 26, 1973 · N7280J · Destroyed
- [NTSB MKC71AK032](https://openairdocs.org/ntsb/MKC71AK032.md): Piper PA-22 · Rapid City, SD · Accident · 1 fatal · Closed · Dec 9, 1970 · N6920B · Destroyed
- [NTSB MKC70AK058](https://openairdocs.org/ntsb/MKC70AK058.md): Mooney M20E · Winner, SD · Accident · 2 fatal · Closed · Apr 22, 1970 · N5949Q · Destroyed
- [NTSB MKC70AK056](https://openairdocs.org/ntsb/MKC70AK056.md): Mooney M20C · Rosholt, SD · Accident · 2 fatal · Closed · Apr 14, 1970 · N6759U · Destroyed
- [NTSB MKC69A0017](https://openairdocs.org/ntsb/MKC69A0017.md): Luscombe 8F · Dell Rapids, SD · Accident · 2 fatal · Closed · Sep 30, 1968 · N1496B · Destroyed
- [NTSB MKC69F0174](https://openairdocs.org/ntsb/MKC69F0174.md): Bell 47G3B1 · Custer, SD · Accident · Minor injuries · Closed · Aug 18, 1968 · N6214N · Destroyed
- [NTSB MKC68A0058](https://openairdocs.org/ntsb/MKC68A0058.md): Mooney M20C · Wessgtn Spg, SD · Accident · 1 fatal · Closed · Apr 4, 1968 · N3437X · Destroyed
- [NTSB MKC68A0019](https://openairdocs.org/ntsb/MKC68A0019.md): Piper J3F · Estelline, SD · Accident · 2 fatal · Closed · Sep 4, 1967 · N40907 · Destroyed
- [NTSB MKC67A0022](https://openairdocs.org/ntsb/MKC67A0022.md): Aero Comdr 1121 · Nplatte, SD · Accident · 5 fatal · Closed · Sep 26, 1966 · N500JR · Destroyed
- [NTSB MKC66A0035](https://openairdocs.org/ntsb/MKC66A0035.md): Mooney M-20C · Timber Lake, SD · Accident · 1 fatal · Closed · Dec 22, 1965 · N7880V · Destroyed
- [NTSB MKC66A0027](https://openairdocs.org/ntsb/MKC66A0027.md): Cessna 310C · Highmore S, SD · Accident · 5 fatal · Closed · Oct 18, 1965 · N1802H · Destroyed
- [NTSB MKC65A0073](https://openairdocs.org/ntsb/MKC65A0073.md): Aeronca 7AC · Winner, SD · Accident · 2 fatal · Closed · Jun 10, 1965 · N2042E · Destroyed
- [NTSB UNK65X1122](https://openairdocs.org/ntsb/UNK65X1122.md): Piper PA-24 · Philip, SD · Accident · 2 fatal · Closed · Dec 24, 1964 · N8489P · 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" = 'SD' 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=SD

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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.