# NTSB investigations: Lycoming GO-435C&D series

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 2 of 3 · 119 cases

## Cases, newest first

- [NTSB SEA75FYC04](https://openairdocs.org/ntsb/SEA75FYC04.md): Grumman G-44 · Sandy, OR · Accident · No injuries · Closed · Jul 16, 1974 · N708C · Substantial damage
- [NTSB NYC74DGM26](https://openairdocs.org/ntsb/NYC74DGM26.md): Navion B · Valencia, PA · Accident · No injuries · Closed · Apr 29, 1974 · N300CB · Substantial damage
- [NTSB CHI74FEP20](https://openairdocs.org/ntsb/CHI74FEP20.md): Helio Acft H-391B · Eau Claire, WI · Accident · No injuries · Closed · Oct 17, 1973 · N8750R · Substantial damage
- [NTSB FTW73DRA23](https://openairdocs.org/ntsb/FTW73DRA23.md): Aero Comdr 520 · Stan C, HO · Accident · No injuries · Closed · Apr 25, 1973 · N4131B · Substantial damage
- [NTSB FTW73FQD12](https://openairdocs.org/ntsb/FTW73FQD12.md): Helio Acft H-391B · El Paso, TX · Accident · No injuries · Closed · Dec 30, 1972 · N316HW · Substantial damage
- [NTSB MIA73FKG26](https://openairdocs.org/ntsb/MIA73FKG26.md): Aero Comdr 520 · Thomson, GA · Accident · No injuries · Closed · Aug 18, 1972 · N2636B · Substantial damage
- [NTSB CHI72FEE48](https://openairdocs.org/ntsb/CHI72FEE48.md): Navion B · Harvard, IL · Accident · No injuries · Closed · Dec 11, 1971 · N5327K · Substantial damage
- [NTSB DEN72FTC13](https://openairdocs.org/ntsb/DEN72FTC13.md): Aero Comdr 520 · Sinclair, WY · Accident · No injuries · Closed · Oct 18, 1971 · N4168B · Substantial damage
- [NTSB MKC72DCJ23](https://openairdocs.org/ntsb/MKC72DCJ23.md): Grumman G-44 · Ogallala, NE · Accident · No injuries · Closed · Sep 1, 1971 · N4617N · Substantial damage
- [NTSB ANC71DAG83](https://openairdocs.org/ntsb/ANC71DAG83.md): Helio H391B · Anchorage, AK · Accident · No injuries · Closed · Apr 10, 1971 · N4123D · Substantial damage
- [NTSB NYC71DFA35](https://openairdocs.org/ntsb/NYC71DFA35.md): Helio Acft H-391 · Malone, NY · Accident · No injuries · Closed · Jan 3, 1971 · N4169D · Substantial damage
- [NTSB MIA71FKT28](https://openairdocs.org/ntsb/MIA71FKT28.md): Aero Comdr 520 · Miami, FL · Accident · No injuries · Closed · Dec 28, 1970 · N167L · Substantial damage
- [NTSB ANC71DAG19](https://openairdocs.org/ntsb/ANC71DAG19.md): Helio Acft H-391B · Ninilchik, AK · Accident · No injuries · Closed · Aug 24, 1970 · N4123D · Substantial damage
- [NTSB MIA71DKW01](https://openairdocs.org/ntsb/MIA71DKW01.md): Bellanca 14-13 · Lawrenceburg, TN · Accident · No injuries · Closed · Jul 18, 1970 · N74480 · Substantial damage
- [NTSB FTW71FRA06](https://openairdocs.org/ntsb/FTW71FRA06.md): Beech B50 · Friendswood, TX · Accident · Minor injuries · Closed · Jul 18, 1970 · N41U · Substantial damage
- [NTSB SEA70D0144](https://openairdocs.org/ntsb/SEA70D0144.md): Aero Comdr 520 · Salem, OR · Accident · No injuries · Closed · Dec 13, 1969 · N2622B · Substantial damage
- [NTSB OAK70A0012](https://openairdocs.org/ntsb/OAK70A0012.md): Navion B · Ash Meadows, NV · Accident · 2 fatal · Closed · Aug 21, 1969 · N5255K · Destroyed
- [NTSB LAX69A0072](https://openairdocs.org/ntsb/LAX69A0072.md): Aero Comdr 520 · Olberg, AZ · Accident · 1 fatal · Closed · May 28, 1969 · N4127B · Destroyed
- [NTSB NYC69F0369](https://openairdocs.org/ntsb/NYC69F0369.md): Aero Comdr 520 · Claremont, NH · Accident · Minor injuries · Closed · Mar 13, 1969 · N4164B · Substantial damage
- [NTSB FTW69D0309](https://openairdocs.org/ntsb/FTW69D0309.md): Navion B · Denver City, TX · Accident · No injuries · Closed · Dec 7, 1968 · N5132K · Substantial damage
- [NTSB FTW69F0278](https://openairdocs.org/ntsb/FTW69F0278.md): Aero Comdr 520 · Dallas, TX · Accident · No injuries · Closed · Nov 16, 1968 · N4129B · Substantial damage
- [NTSB NYC69F0097](https://openairdocs.org/ntsb/NYC69F0097.md): Aero Comdr 520 · Medford, NJ · Accident · No injuries · Closed · Jul 25, 1968 · N222E · Substantial damage
- [NTSB NYC69A0008](https://openairdocs.org/ntsb/NYC69A0008.md): Helio H-391B · Royalston, MA · Accident · 2 fatal · Closed · Jul 10, 1968 · N28B · 2 aircraft · Destroyed
- [NTSB CHI69F0047](https://openairdocs.org/ntsb/CHI69F0047.md): Navion B · Romulus, MI · Accident · No injuries · Closed · Jul 8, 1968 · N5265K · Substantial damage
- [NTSB MIA69F0005](https://openairdocs.org/ntsb/MIA69F0005.md): Aero Comdr 520 · Nashville, TN · Accident · No injuries · Closed · Jun 17, 1968 · N359T · Substantial damage
- [NTSB MIA69F0039](https://openairdocs.org/ntsb/MIA69F0039.md): Aero Comdr 520 · Geiger, AL · Accident · No injuries · Closed · May 21, 1968 · N2604B · Substantial damage
- [NTSB SEA68D0218](https://openairdocs.org/ntsb/SEA68D0218.md): Aero Comdr 520 · Bozeman, MT · Accident · No injuries · Closed · Nov 22, 1967 · N2625B · Substantial damage
- [NTSB DEN68A0014](https://openairdocs.org/ntsb/DEN68A0014.md): Aero-Comdr 520 · Parshall, CO · Accident · 4 fatal · Closed · Aug 9, 1967 · N8000G · Destroyed
- [NTSB DIA68F0046](https://openairdocs.org/ntsb/DIA68F0046.md): Aero Comdr 520 · Charlotte, NC · Accident · No injuries · Closed · Aug 7, 1967 · N222E · Substantial damage
- [NTSB SEA68D0094](https://openairdocs.org/ntsb/SEA68D0094.md): Navion B · North Bend, OR · Accident · No injuries · Closed · Jul 18, 1967 · N5316K · Substantial damage
- [NTSB LAX67D0044](https://openairdocs.org/ntsb/LAX67D0044-117280.md): Helio H-391 · Nogales, AZ · Accident · No injuries · Closed · May 15, 1967 · N8096E · Substantial damage
- [NTSB FTW67F0615](https://openairdocs.org/ntsb/FTW67F0615.md): Aero Comdr 520 · Lubbock, TX · Accident · No injuries · Closed · May 13, 1967 · N2605B · Substantial damage
- [NTSB DEN67D0245](https://openairdocs.org/ntsb/DEN67D0245.md): Beech B50 · Hobbs, NM · Accident · No injuries · Closed · Apr 11, 1967 · N3577B · Substantial damage
- [NTSB SEA67F0274](https://openairdocs.org/ntsb/SEA67F0274.md): Beech B50 · Wenatchee, WA · Accident · No injuries · Closed · Apr 3, 1967 · N104W · Substantial damage
- [NTSB CHI67F0641](https://openairdocs.org/ntsb/CHI67F0641.md): Aero Comdr 520 · Rockford, IL · Accident · No injuries · Closed · Apr 3, 1967 · N7834 · Substantial damage
- [NTSB MKC67F0604](https://openairdocs.org/ntsb/MKC67F0604.md): Navion B · Columbia, MO · Accident · No injuries · Closed · Mar 8, 1967 · N5274K · Destroyed
- [NTSB CHI67A0095](https://openairdocs.org/ntsb/CHI67A0095.md): Aero Comdr 520 · Columbia City, IN · Accident · No injuries · Closed · Feb 10, 1967 · N4197B · Substantial damage
- [NTSB SEA67D0218](https://openairdocs.org/ntsb/SEA67D0218.md): Navion A · Boise, ID · Accident · No injuries · Closed · Dec 24, 1966 · N5235K · Substantial damage
- [NTSB NYC67F0308](https://openairdocs.org/ntsb/NYC67F0308.md): Helio H-391B · Manville, NJ · Accident · No injuries · Closed · Oct 20, 1966 · N6021 · Substantial damage
- [NTSB MIA67F0192](https://openairdocs.org/ntsb/MIA67F0192.md): Aero Comdr 520 · Mobile, AL · Accident · No injuries · Closed · Aug 19, 1966 · N4162B · Substantial damage
- [NTSB CHI67F0240](https://openairdocs.org/ntsb/CHI67F0240.md): Aero Comdr 520 · Gary, IN · Accident · Serious injuries · Closed · Aug 14, 1966 · N1914 · Destroyed
- [NTSB MIA67F0100](https://openairdocs.org/ntsb/MIA67F0100.md): Aero Comdr 520 · Linden, TN · Accident · Minor injuries · Closed · Jul 10, 1966 · N500U · Substantial damage
- [NTSB DEN67D0007](https://openairdocs.org/ntsb/DEN67D0007.md): Beech B50 · Hobbs, NM · Accident · No injuries · Closed · Jun 17, 1966 · N3577B · Substantial damage
- [NTSB NYC66F0634](https://openairdocs.org/ntsb/NYC66F0634.md): Navion B · West Chester, PA · Accident · No injuries · Closed · Apr 9, 1966 · N5380K · Substantial damage
- [NTSB DEN66D0261](https://openairdocs.org/ntsb/DEN66D0261.md): Navion B · Parker, AZ · Accident · No injuries · Closed · Mar 14, 1966 · N5255K · Substantial damage
- [NTSB FTW66F0458](https://openairdocs.org/ntsb/FTW66F0458.md): Aero Cmdr 520 · Cleo Springs, OK · Accident · No injuries · Closed · Dec 6, 1965 · N7834 · Substantial damage
- [NTSB FTW66F0422](https://openairdocs.org/ntsb/FTW66F0422.md): Aero Cmdr 520 · Oklahoma City, OK · Accident · No injuries · Closed · Nov 17, 1965 · N264RW · Substantial damage
- [NTSB MKC66F0332](https://openairdocs.org/ntsb/MKC66F0332.md): Aero Cmdr 520 · Minneapolis, MN · Accident · No injuries · Closed · Nov 8, 1965 · N5574V · Substantial damage
- [NTSB FTW66F0354](https://openairdocs.org/ntsb/FTW66F0354.md): Aero Cmdr 520 · Midland, TX · Accident · No injuries · Closed · Oct 16, 1965 · N4183B · Substantial damage
- [NTSB MKC66D0220](https://openairdocs.org/ntsb/MKC66D0220.md): Navion B · Lathrop, MO · Accident · Minor injuries · Closed · Aug 28, 1965 · N5397K · Substantial damage

Next page: https://openairdocs.org/ntsb.md?engine=41521&page=3

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41521'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41521&page=2

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