# NTSB investigations: 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.

Page 35 of 40 · 1,978 cases

## Cases, newest first

- [NTSB ANC72AA005](https://openairdocs.org/ntsb/ANC72AA005.md): Cessna 150G · Petersburg, AK · Accident · 2 fatal · Closed · Jul 25, 1971 · N8697J · Substantial damage
- [NTSB NYC72AN005](https://openairdocs.org/ntsb/NYC72AN005.md): Mooney M20F · Plum Borough, PA · Accident · 2 fatal · Closed · Jul 8, 1971 · N9651M · Substantial damage
- [NTSB FTW72AF013](https://openairdocs.org/ntsb/FTW72AF013.md): Piper PA-24 · Missing Aircraft · Accident · 2 fatal · Closed · Jul 7, 1971 · N8779P · Destroyed
- [NTSB MKC72FCA01](https://openairdocs.org/ntsb/MKC72FCA01.md): Cessna 172K · Bonne Terre, MO · Accident · No injuries · Closed · Jul 5, 1971 · N7480G · Substantial damage
- [NTSB NYC71AN126](https://openairdocs.org/ntsb/NYC71AN126.md): Cessna 172 · Missing Aircraft · Accident · 4 fatal · Closed · Jun 22, 1971 · N3831S · Destroyed
- [NTSB MIA71AM097](https://openairdocs.org/ntsb/MIA71AM097.md): Cessna 337A · Jackson, MS · Accident · 2 fatal · Closed · May 16, 1971 · N5388S · Destroyed
- [NTSB FTW71FRJ34](https://openairdocs.org/ntsb/FTW71FRJ34.md): Aeronca 7AC · Waterproof, LA · Accident · Serious injuries · Closed · May 15, 1971 · N83076 · Destroyed
- [NTSB FTW71DRH35](https://openairdocs.org/ntsb/FTW71DRH35.md): Maule M4210C · Botapelis, Mexico · Accident · Serious injuries · Closed · May 10, 1971 · N2001U · Substantial damage
- [NTSB ANC71AA055](https://openairdocs.org/ntsb/ANC71AA055.md): Cessna 180 · Missing Aircraft · Accident · 1 fatal · Closed · Apr 17, 1971 · N7932V · Destroyed
- [NTSB MIA71AM084](https://openairdocs.org/ntsb/MIA71AM084.md): Cessna 177B · Missing Aircraft · Accident · 1 fatal · Closed · Mar 20, 1971 · N30844 · Destroyed
- [NTSB FTW71DPA25](https://openairdocs.org/ntsb/FTW71DPA25.md): Piper PA-24 · Baborigane, Mexico · Accident · 1 fatal · Closed · Mar 14, 1971 · N9104D · Destroyed
- [NTSB NYC71AN085](https://openairdocs.org/ntsb/NYC71AN085.md): Aero Comdr 1121A · South Burlington, VT · Accident · 5 fatal · Closed · Jan 27, 1971 · N400CP · Destroyed
- [NTSB OAK71FJA11](https://openairdocs.org/ntsb/OAK71FJA11.md): Grumman SCAN30 · Ebeye, Montserrat · Accident · No injuries · Closed · Jan 22, 1971 · N4452 · Substantial damage
- [NTSB CHI71AC050](https://openairdocs.org/ntsb/CHI71AC050.md): Cessna 172 · Missing Aircraft · Accident · 2 fatal · Closed · Jan 3, 1971 · N8342L · Destroyed
- [NTSB FTW71AF035](https://openairdocs.org/ntsb/FTW71AF035.md): Cessna 150F · Pearland, TX · Accident · 1 fatal · Closed · Dec 22, 1970 · N7021F · Destroyed
- [NTSB LAX71IL039](https://openairdocs.org/ntsb/LAX71IL039.md): Boeing 747 · Los Angeles, CA · Incident · No injuries · Closed · Dec 12, 1970 · N4710U · Minor damage
- [NTSB NYC71AN067](https://openairdocs.org/ntsb/NYC71AN067.md): Cessna 172 · Missing Aircraft · Accident · 6 fatal · Closed · Nov 29, 1970 · N8443X · Destroyed
- [NTSB FTW71DRG53](https://openairdocs.org/ntsb/FTW71DRG53.md): Beech B35 · Punta Penasco, Mexico · Accident · 5 fatal · Closed · Nov 25, 1970 · N5057C · Destroyed
- [NTSB MIA71AM043](https://openairdocs.org/ntsb/MIA71AM043.md): Piper PA-24 · Missing Aircraft · Accident · 3 fatal · Closed · Nov 23, 1970 · N9346P · Destroyed
- [NTSB IAD71AI026](https://openairdocs.org/ntsb/IAD71AI026.md): Piper PA-28 · Missing Aircraft, VA · Accident · 1 fatal · Closed · Nov 13, 1970 · N9384W · Destroyed
- [NTSB CHI71FBQ19](https://openairdocs.org/ntsb/CHI71FBQ19.md): Taylorcraft BC12-D · Belle Rive, IL · Accident · Serious injuries · Closed · Oct 5, 1970 · N94900 · Substantial damage
- [NTSB FTW71DQG46](https://openairdocs.org/ntsb/FTW71DQG46.md): Piper PA-30 · Juarez, Mexico · Accident · 2 fatal · Closed · Sep 28, 1970 · N8825Y · Destroyed
- [NTSB NYC71AN035](https://openairdocs.org/ntsb/NYC71AN035.md): Piper PA-24 · Missing Aircraft · Accident · 2 fatal · Closed · Sep 8, 1970 · N5414P · Destroyed
- [NTSB NYC71IN027](https://openairdocs.org/ntsb/NYC71IN027.md): Boeing 747 · Boston, MA · Incident · No injuries · Closed · Aug 26, 1970 · G-AWNA · Minor damage
- [NTSB ANC71AA018](https://openairdocs.org/ntsb/ANC71AA018.md): Sikorsky S-55B · Valdez, AK · Accident · 1 fatal · Closed · Aug 26, 1970 · N455Z
- [NTSB MKC71FDQ09](https://openairdocs.org/ntsb/MKC71FDQ09.md): Aeronca 7GCB · Sturgis, SD · Accident · No injuries · Closed · Aug 17, 1970 · N9939Y · Substantial damage
- [NTSB SEA71AS025](https://openairdocs.org/ntsb/SEA71AS025.md): Beech S35 · Missing Aircraft · Accident · 1 fatal · Closed · Aug 7, 1970 · N11SM · Destroyed
- [NTSB ANC71AA006](https://openairdocs.org/ntsb/ANC71AA006.md): Cessna 182 · Missing Aircraft, AK · Accident · 2 fatal · Closed · Aug 7, 1970 · N3312Y · Destroyed
- [NTSB LAX71DUJ13](https://openairdocs.org/ntsb/LAX71DUJ13.md): Mooney M20C · Sonora, Mexico · Accident · 4 fatal · Closed · Aug 2, 1970 · N9124V · Destroyed
- [NTSB NYC71FHA07](https://openairdocs.org/ntsb/NYC71FHA07.md): Knudson C JR · Layton, NJ · Accident · No injuries · Closed · Jul 26, 1970 · N10061 · Destroyed
- [NTSB MIA71IM008](https://openairdocs.org/ntsb/MIA71IM008.md): Boeing 727 · Jacksonville, FL · Incident · No injuries · Closed · Jul 22, 1970 · N4730 · Minor damage
- [NTSB NYC71AN002](https://openairdocs.org/ntsb/NYC71AN002.md): Cessna 310P · Missing Aircraft · Accident · 1 fatal · Closed · Jul 3, 1970 · N5766M · Destroyed
- [NTSB MIA71AM002](https://openairdocs.org/ntsb/MIA71AM002.md): Cessna 310G · Missing Aircraft · Accident · 6 fatal · Closed · Jul 3, 1970 · N1166T · Destroyed
- [NTSB CHI70AC086](https://openairdocs.org/ntsb/CHI70AC086.md): Cessna 172 · Missing Aircraft · Accident · 1 fatal · Closed · May 31, 1970 · N7487T · Destroyed
- [NTSB CHI70AC084](https://openairdocs.org/ntsb/CHI70AC084.md): Cessna 210B · Mackinac Is, MI · Accident · 2 fatal · Closed · May 30, 1970 · N9697X · Destroyed
- [NTSB ANC70AA079](https://openairdocs.org/ntsb/ANC70AA079.md): Hiller Acft UH12EL · Northway, AK · Accident · 3 fatal · Closed · May 16, 1970 · N5353V · Destroyed
- [NTSB CHI70AC079](https://openairdocs.org/ntsb/CHI70AC079.md): Cessna 150H · Greenwood, IN · Accident · 2 fatal · Closed · May 12, 1970 · N7208S · Destroyed
- [NTSB CHI70AC076](https://openairdocs.org/ntsb/CHI70AC076.md): Beech 35-B33 · Missing Aircraft · Accident · 2 fatal · Closed · Apr 28, 1970 · N9563Y · Destroyed
- [NTSB FTW70DRG35](https://openairdocs.org/ntsb/FTW70DRG35.md): Cessna 182 · Del Rio, TX · Accident · No injuries · Closed · Apr 14, 1970 · N2129R · Substantial damage
- [NTSB MIA70DKT11](https://openairdocs.org/ntsb/MIA70DKT11.md): Bellanca 17-30 · Summerlnd Key, FL · Accident · No injuries · Closed · Mar 30, 1970 · N7379V · Substantial damage
- [NTSB FTW70DRA10](https://openairdocs.org/ntsb/FTW70DRA10.md): Douglas DC-3A · Melcor Ocampo, Mexico · Accident · 2 fatal · Closed · Mar 21, 1970 · N163J · Destroyed
- [NTSB NYC70AN099](https://openairdocs.org/ntsb/NYC70AN099.md): Helio Acft H-295 · Missing Aircraft · Accident · 1 fatal · Closed · Mar 12, 1970 · N5459E · Destroyed
- [NTSB LAX70FUD06](https://openairdocs.org/ntsb/LAX70FUD06.md): Cessna 120 · Compton, CA · Accident · No injuries · Closed · Mar 9, 1970 · N76385 · Substantial damage
- [NTSB CHI70AC053](https://openairdocs.org/ntsb/CHI70AC053.md): Cessna 150G · Rantoul, IL · Accident · 2 fatal · Closed · Feb 16, 1970 · N2968J · Destroyed
- [NTSB DEN70FQA03](https://openairdocs.org/ntsb/DEN70FQA03.md): Cessna 402 · Las Vegas, NM · Accident · No injuries · Closed · Jan 25, 1970 · N4530Q · Substantial damage
- [NTSB MIA70AM062](https://openairdocs.org/ntsb/MIA70AM062.md): Piper PA-24 · Missing Aircraft · Accident · 2 fatal · Closed · Jan 17, 1970 · N9078P · Destroyed
- [NTSB NYC70AN065](https://openairdocs.org/ntsb/NYC70AN065.md): Cessna 172 · Missing Aircraft · Accident · 1 fatal · Closed · Jan 3, 1970 · N7829U · Destroyed
- [NTSB LAX70A0035](https://openairdocs.org/ntsb/LAX70A0035.md): Cessna 150 · Sn Clemente, CA · Accident · 2 fatal · Closed · Dec 11, 1969 · N2426J · Destroyed
- [NTSB NYC70AN068](https://openairdocs.org/ntsb/NYC70AN068.md): Cessna 180 · Missing Aircraft · Accident · 1 fatal · Closed · Nov 18, 1969 · N9113T · Destroyed
- [NTSB CHI70A0035](https://openairdocs.org/ntsb/CHI70A0035.md): Piper PA-28R · Missing Aircraft · Accident · 1 fatal · Closed · Nov 13, 1969 · N7636J · Destroyed

Next page: https://openairdocs.org/ntsb-phases/990/cases.md?page=36

## 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 = 990)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/990/cases?page=35

---
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.