# NTSB investigations: Emergency 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.

Page 10 of 11 · 505 cases

## Cases, newest first

- [NTSB MKC75AN076](https://openairdocs.org/ntsb/MKC75AN076.md): Cessna 177 · Grand Island, NY · Accident · 1 fatal · Closed · Dec 28, 1974 · N29496 · Destroyed
- [NTSB IAD75DIJ09](https://openairdocs.org/ntsb/IAD75DIJ09.md): Cessna 177B · Volney, VA · Accident · No injuries · Closed · Dec 17, 1974 · N34477 · Destroyed
- [NTSB NYC75FFJ17](https://openairdocs.org/ntsb/NYC75FFJ17.md): Piper PA-30 · Blasdell, NY · Accident · Serious injuries · Closed · Nov 14, 1974 · N20JF · Substantial damage
- [NTSB SEA74DTI18](https://openairdocs.org/ntsb/SEA74DTI18.md): Bell 47G3B1 · Conrad, MT · Accident · No injuries · Closed · Feb 24, 1974 · N7936S · Substantial damage
- [NTSB CHI74DEM33](https://openairdocs.org/ntsb/CHI74DEM33.md): Bell 47G-2 · Greenville, MI · Accident · No injuries · Closed · Dec 29, 1973 · N6738D · Substantial damage
- [NTSB IAD74DLT08](https://openairdocs.org/ntsb/IAD74DLT08.md): Piper PA-28 · Memphis, TN · Accident · No injuries · Closed · Oct 15, 1973 · N98182 · Substantial damage
- [NTSB MIA74FKG44](https://openairdocs.org/ntsb/MIA74FKG44.md): Enstrom F-28A · Atlanta, GA · Accident · No injuries · Closed · Oct 3, 1973 · N4870 · Substantial damage
- [NTSB UNK73X0118](https://openairdocs.org/ntsb/UNK73X0118.md): Bell 206 · Dhahran (Gulf of Mexico) · Accident · No injuries · Closed · Jul 28, 1973 · N8162J · Substantial damage
- [NTSB NYC74AN009](https://openairdocs.org/ntsb/NYC74AN009.md): Bell 206A · New York, NY · Accident · 1 fatal · Closed · Jul 28, 1973 · N4087G · Destroyed
- [NTSB DEN74DQA06](https://openairdocs.org/ntsb/DEN74DQA06.md): Bell 47G3B2 · Luna, NM · Accident · No injuries · Closed · Jul 11, 1973 · N58131 · Substantial damage
- [NTSB IAD73FID22](https://openairdocs.org/ntsb/IAD73FID22.md): Hughes 269C · Richmond, VA · Accident · No injuries · Closed · May 16, 1973 · N9693F · Substantial damage
- [NTSB ANC73AA037](https://openairdocs.org/ntsb/ANC73AA037.md): Dehavilland DHC-2 · Sagwon, AK · Accident · Serious injuries · Closed · Dec 11, 1972 · N53011 · Substantial damage
- [NTSB CHI73ACO47](https://openairdocs.org/ntsb/CHI73ACO47.md): Enstrom F-28A · Lexington, KY · Accident · No injuries · Closed · Nov 7, 1972 · N4925 · Substantial damage
- [NTSB CHI72FEI03](https://openairdocs.org/ntsb/CHI72FEI03.md): Cessna 182 · Northfield, OH · Accident · No injuries · Closed · Jul 7, 1971 · N9011T · Substantial damage
- [NTSB DEN71FTE66](https://openairdocs.org/ntsb/DEN71FTE66.md): Piper PA-24 · Sugar City, CO · Accident · Serious injuries · Closed · Apr 4, 1971 · N5418P · Substantial damage
- [NTSB LAX71FUD12](https://openairdocs.org/ntsb/LAX71FUD12.md): Hughes 269B · Compton, CA · Accident · Minor injuries · Closed · Mar 7, 1971 · N9458F · Substantial damage
- [NTSB OAK71DVD18](https://openairdocs.org/ntsb/OAK71DVD18.md): Hughes 369HS · Cotati, CA · Accident · No injuries · Closed · Nov 26, 1970 · N9017F · Substantial damage
- [NTSB MIA71FLG09](https://openairdocs.org/ntsb/MIA71FLG09.md): Hughes 269A · Lexington, SC · Accident · Minor injuries · Closed · Aug 30, 1970 · N8947F · Substantial damage
- [NTSB FTW70FPJ26](https://openairdocs.org/ntsb/FTW70FPJ26.md): Aero Comdr 690 · Bethany, OK · Accident · Serious injuries · Closed · Jun 26, 1970 · N9202N · Destroyed
- [NTSB OAK70DVM15](https://openairdocs.org/ntsb/OAK70DVM15.md): Hughes 269B · San Carlos, CA · Accident · No injuries · Closed · May 1, 1970 · N13470 · Substantial damage
- [NTSB NYC70FHM09](https://openairdocs.org/ntsb/NYC70FHM09.md): Piper PA-18A · Wappinger Fall, NY · Accident · Minor injuries · Closed · Mar 9, 1970 · N7093B · Destroyed
- [NTSB DEN70AD044](https://openairdocs.org/ntsb/DEN70AD044.md): Hiller Acft FH1100 · Blanca, CO · Accident · No injuries · Closed · Jan 8, 1970 · N390P · Substantial damage
- [NTSB DEN69A0048](https://openairdocs.org/ntsb/DEN69A0048.md): Beech 35-33 · Del Norte, CO · Accident · 7 fatal · Closed · May 6, 1969 · N2737T · Destroyed
- [NTSB DEN69D0207](https://openairdocs.org/ntsb/DEN69D0207.md): Piper J-3 · Greybull, WY · Accident · No injuries · Closed · Mar 30, 1969 · N42581 · Substantial damage
- [NTSB OAK69D0220](https://openairdocs.org/ntsb/OAK69D0220.md): Cessna 175 · Goldfield, NV · Accident · Minor injuries · Closed · Jan 20, 1969 · N6700E · Destroyed
- [NTSB SEA69A0012](https://openairdocs.org/ntsb/SEA69A0012.md): Bell 47G-3B · Twin Falls, ID · Accident · No injuries · Closed · Aug 13, 1968 · N8491E · Substantial damage
- [NTSB NYC69D0235](https://openairdocs.org/ntsb/NYC69D0235.md): Cessna 150 · Orient Point, NY · Accident · No injuries · Closed · Aug 8, 1968 · N4529U · Destroyed
- [NTSB NYC69F0076](https://openairdocs.org/ntsb/NYC69F0076.md): Brantly B-2B · Monroeville, PA · Accident · No injuries · Closed · Jul 6, 1968 · N5948X · Substantial damage
- [NTSB OAK68A0075](https://openairdocs.org/ntsb/OAK68A0075.md): Bell 47G-5 · Reno, NV · Accident · Minor injuries · Closed · Jun 27, 1968 · N1393X · Substantial damage
- [NTSB LAX69F0027](https://openairdocs.org/ntsb/LAX69F0027.md): Bell 47D1 · Crona D Mar, CA · Accident · No injuries · Closed · Jun 21, 1968 · N12512 · Substantial damage
- [NTSB FTW69D0066](https://openairdocs.org/ntsb/FTW69D0066.md): Cessna 172 · Junction, TX · Accident · No injuries · Closed · Apr 9, 1968 · N8811B · Substantial damage
- [NTSB FTW67A0035](https://openairdocs.org/ntsb/FTW67A0035-114913.md): Hughes 269A · Mineral Wells, TX · Accident · No injuries · Closed · Sep 23, 1967 · N8818F · Substantial damage
- [NTSB SEA68A0021](https://openairdocs.org/ntsb/SEA68A0021.md): Bell 47G3B1 · West Glacier, MT · Accident · No injuries · Closed · Jul 29, 1967 · N73916 · Substantial damage
- [NTSB NYC67A0135](https://openairdocs.org/ntsb/NYC67A0135.md): Bensen B-8-7 · Forty Fort, PA · Accident · Serious injuries · Closed · Apr 2, 1967 · N2191 · Destroyed
- [NTSB NYC67A0094](https://openairdocs.org/ntsb/NYC67A0094.md): Brantly B-2B · Riverdale, MD · Accident · No injuries · Closed · Dec 23, 1966 · N2277U · Substantial damage
- [NTSB DEN67A0021](https://openairdocs.org/ntsb/DEN67A0021.md): Bell 47G3B1 · Old Faithful, WY · Accident · Serious injuries · Closed · Sep 15, 1966 · N73982 · Substantial damage
- [NTSB FTW67A0027](https://openairdocs.org/ntsb/FTW67A0027.md): Hughes 269A · Tulsa, OK · Accident · Minor injuries · Closed · Sep 3, 1966 · N8733F · Destroyed
- [NTSB DEN67A0007](https://openairdocs.org/ntsb/DEN67A0007.md): Bell 47G3B1 · Riverton, WY · Accident · Serious injuries · Closed · Jul 20, 1966 · N1332X · Substantial damage
- [NTSB CHI67I0003](https://openairdocs.org/ntsb/CHI67I0003.md): Nord 262 · Erlanger, KY · Incident · No injuries · Closed · Jul 7, 1966 · N26210 · Minor damage
- [NTSB OAK66A0061](https://openairdocs.org/ntsb/OAK66A0061.md): Hughes 269A · Eureka, CA · Accident · Serious injuries · Closed · Jun 27, 1966 · N8702F · Destroyed
- [NTSB NYC67F0015](https://openairdocs.org/ntsb/NYC67F0015.md): Piper J3 · Tewksbury, MA · Accident · Minor injuries · Closed · May 30, 1966 · N7485H · Destroyed
- [NTSB OAK66A0052](https://openairdocs.org/ntsb/OAK66A0052.md): Hughes 269B · Canby, CA · Accident · Minor injuries · Closed · May 7, 1966 · N9449F · Substantial damage
- [NTSB MKC66F0430](https://openairdocs.org/ntsb/MKC66F0430.md): Cessna 310B · Springfield, MO · Accident · No injuries · Closed · Feb 13, 1966 · N6623B · Substantial damage
- [NTSB MIA66A0080](https://openairdocs.org/ntsb/MIA66A0080.md): Hughes 269B · Saluda, SC · Accident · No injuries · Closed · Jan 8, 1966 · N9356F · Substantial damage
- [NTSB MIA66A0022](https://openairdocs.org/ntsb/MIA66A0022.md): Hughes 269A · Miami, FL · Accident · No injuries · Closed · Aug 19, 1965 · N8735F · Substantial damage
- [NTSB FTW66F0016](https://openairdocs.org/ntsb/FTW66F0016.md): Mooney M20C · Foraker, OK · Accident · Serious injuries · Closed · Mar 28, 1965 · N6454U · Substantial damage
- [NTSB FTW65A0092](https://openairdocs.org/ntsb/FTW65A0092.md): Brantly B2 · Mustang, OK · Accident · Minor injuries · Closed · Mar 15, 1965 · N5969X · Destroyed
- [NTSB SEA65A0044](https://openairdocs.org/ntsb/SEA65A0044.md): Bell 47D1 · Roseburg, OR · Accident · No injuries · Closed · Feb 23, 1965 · N917B · Substantial damage
- [NTSB UNK65X1124](https://openairdocs.org/ntsb/UNK65X1124.md): Hughes 269A · Castiac, CA · Accident · Serious injuries · Closed · Dec 24, 1964 · N8723F · Destroyed
- [NTSB UNK64X3349](https://openairdocs.org/ntsb/UNK64X3349.md): Brantly B2 · Beaver Falls, PA · Accident · Minor injuries · Closed · Aug 12, 1964 · N5997X · Substantial damage

Next page: https://openairdocs.org/ntsb-phases/600/cases.md?page=11

## 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."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 600)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/600/cases?page=10

---
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.