# Fatal NTSB investigations: Lycoming IGSO-540-B1A

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 WPR19FA175](https://openairdocs.org/ntsb/WPR19FA175.md): Robinson R44 · Two Harbors, CA · Accident · 1 fatal · Class 3 · Field · Final report · Jun 18, 2019 · N7187D · Destroyed
  > The pilot's continued visual flight into instrument meteorological conditions, which resulted in controlled flight into terrain.
- [NTSB WPR11FA078](https://openairdocs.org/ntsb/WPR11FA078.md): Aero Commander 680FL · Perris, CA · Accident · 1 fatal · Field investigation · Final report · Dec 20, 2010 · N316KW · Substantial damage
  > The pilot’s decision to continue visual flight into instrument meteorological conditions, which resulted in an in-flight collision with mountainous terrain.
- [NTSB NYC08FA012](https://openairdocs.org/ntsb/NYC08FA012.md): Aero Commander 560-F · Wiley Ford, WV · Accident · 4 fatal · Field investigation · Final report · Oct 14, 2007 · N6370U · Destroyed
  > A partial power loss in the right engine due to the failure of the number one exhaust valve, and the airplane's inability to maintain a climb on one engine for unknown reasons. Contributing to the accident were fog and rising terrain. [This report was…
- [NTSB CHI95FA124](https://openairdocs.org/ntsb/CHI95FA124.md): Beech 65-B80 · Great Bend, ND · Accident · 1 fatal · Field investigation · Final report · Apr 12, 1995 · N7057J · Destroyed
  > the pilot/mechanic's inadequate maintenance (inspection) of aircraft and the pilot's failure to maintain airspeed (VMC). Factors were icing conditions, deteriorated induction air ducting, and failure of a piston assembly.
- [NTSB FTW93WA270](https://openairdocs.org/ntsb/FTW93WA270.md): Aero Commander 680F · Chihuahua, Mexico · Accident · 3 fatal · Foreign investigation · Jun 3, 1993 · N8676D · Destroyed
- [NTSB LAX93FA045](https://openairdocs.org/ntsb/LAX93FA045.md): Beech D50A · Ely, NV · Accident · 2 fatal · Field investigation · Final report · Oct 29, 1992 · N102F · Destroyed
  > 1) The pilots decision to attempt VFR flight into instrument meteorological conditions, which included mountain obscurement and severe mixed icing, and, 2) his failure to maintain control of the aircraft due to a probable aerodynamic stall induced by severe…
- [NTSB LAX89FA307](https://openairdocs.org/ntsb/LAX89FA307.md): Aero Commander 680FLP · Kailua-Kona, HI · Accident · 1 fatal · Field investigation · Final report · Sep 11, 1989 · N22LR · Destroyed
  > Inadequate maintenance, and operation by the pilot with known deficiencies in the aircraft. Factors related to the accident were: excessive wear in both engines, improper use of powerplant controls by the pilot, subsequent overtemperature/detonation in both…
- [NTSB MIA88LA104](https://openairdocs.org/ntsb/MIA88LA104.md): Beech 65-88 · Accident · 2 fatal · Limited investigation · Final report · Feb 7, 1988 · N884G · Destroyed
  > Undetermined.
- [NTSB DCA85AA012](https://openairdocs.org/ntsb/DCA85AA012.md): Beech 65-A80 · Soldotna, AK · Accident · 9 fatal · Final report · Feb 4, 1985 · N50NP · Destroyed
  > During arrival, the crew of npa flt 1802 contacted the company wx observer at Soldotna who advised the wx was: wnd calm,ceiling 600 to 800 ft, vis 8 to 10 mi, no precip. They made an NDB apch, but missed the apch & requested another apch. Aprx 1 min later,…
- [NTSB FTW83FA299](https://openairdocs.org/ntsb/FTW83FA299.md): Aero Commander 680-F · Norman, OK · Accident · 2 fatal · Field investigation · Final report · Jun 28, 1983 · N6139X · Destroyed
  > The acft crashed after starting a go-around or aborted landing at normal ok. The acft was on a x-country from dallas to wichita. There was no radio communication with the acft after it was cleared to land. The approach looked ok but on short final the acft…
- [NTSB MIA81FA102](https://openairdocs.org/ntsb/MIA81FA102.md): Beech 65-B80 · Groveland, FL · Accident · 2 fatal · Closed · Jul 28, 1981 · N1028C · Destroyed
- [NTSB ATL81FA062](https://openairdocs.org/ntsb/ATL81FA062.md): Beech 65-B80 · Pine Knot, KY · Accident · 2 fatal · Closed · Apr 10, 1981 · N3768Z · Destroyed
- [NTSB MIA80DA094](https://openairdocs.org/ntsb/MIA80DA094.md): Beech 65-80 · Pt.Maria (Gulf of Mexico) · Accident · 1 fatal · Closed · Aug 25, 1980 · N218K · Destroyed
- [NTSB FTW80FA096](https://openairdocs.org/ntsb/FTW80FA096.md): Aero Comdr 680FLP · Iola, TX · Accident · 2 fatal · Closed · Jul 25, 1980 · N6515V · Destroyed
- [NTSB MIA80FA032](https://openairdocs.org/ntsb/MIA80FA032.md): Aero Comdr 680FL · Sebring, FL · Accident · 2 fatal · Closed · Feb 14, 1980 · N662B · Destroyed
- [NTSB FTW79FA041](https://openairdocs.org/ntsb/FTW79FA041.md): Aero Comdr 680FP · El Reno, OK · Accident · 3 fatal · Closed · Jan 11, 1979 · N2177M · Destroyed
- [NTSB MIA78DA115](https://openairdocs.org/ntsb/MIA78DA115.md): Aero Comdr 680F · Ngreat Inagua (Atlantic Ocean) · Accident · 2 fatal · Closed · Aug 7, 1978 · N669SA · Destroyed
- [NTSB MIA78FA060](https://openairdocs.org/ntsb/MIA78FA060-202551.md): Aero Comdr 680F · Fellsmere, FL · Accident · 1 fatal · Closed · Apr 5, 1978 · N2998C · Destroyed
- [NTSB IAD78FA041](https://openairdocs.org/ntsb/IAD78FA041.md): Aero Cmdr 680FL · Morrisville, NC · Accident · 4 fatal · Closed · Feb 13, 1978 · N26511 · Destroyed
- [NTSB MIA77FA080](https://openairdocs.org/ntsb/MIA77FA080.md): Beech 65-80 · Vancleave, MS · Accident · 3 fatal · Closed · Aug 13, 1977 · N6DG · Destroyed

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41535'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41535&fatal=1

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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.