# NTSB investigations: Lycoming HIO-360 series, IL

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 CEN15LA341](https://openairdocs.org/ntsb/CEN15LA341.md): Hughes 269B · Atkinson, IL · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 2015 · N9427F · Destroyed
  > The pilot's improper decision to intentionally fly the helicopter at a low altitude and his subsequent failure to maintain clearance from a power line.
- [NTSB CEN15CA274](https://openairdocs.org/ntsb/CEN15CA274.md): Enstrom F 28C · Romeoville, IL · Accident · No injuries · Data collection · Final report · Jun 14, 2015 · N51778 · Substantial damage
  > The certified flight instructor (CFI) did not maintain directional control during a downwind emergency running landing to soft muddy terrain, which resulted in a dynamic rollover. Contributing to the accident was the CFI's delayed or insufficient remedial…
- [NTSB CHI98LA166](https://openairdocs.org/ntsb/CHI98LA166.md): Enstrom F28 · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · May 14, 1998 · N86238 · Substantial damage
  > the student pilot attempting a tailwind landing and improper compensation for the wind resulting in too high of a sink rate and the hard landing.
- [NTSB CHI93DEE01](https://openairdocs.org/ntsb/CHI93DEE01.md): Mark Streitz Skybolt · Joliet, IL · Accident · No injuries · Final report · Jun 5, 1993 · N94MS · Substantial damage
  > the failure of the number two connecting rod bolt.
- [NTSB CHI92LA222](https://openairdocs.org/ntsb/CHI92LA222.md): Hughes 269C · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Aug 1, 1992 · N58335 · Substantial damage
  > Fatigue fracture of the engine crankshaft resulting in loss of power. Factors were the pilot's excessive descent and his lack of total experience.
- [NTSB CHI89FA112](https://openairdocs.org/ntsb/CHI89FA112.md): Hughes 269C · Lockport, IL · Accident · Minor injuries · Field investigation · Final report · Jun 18, 1989 · N26628 · Destroyed
  > Improper flight technique by the PIC during a takeoff from a confined area.
- [NTSB CHI89DEV06](https://openairdocs.org/ntsb/CHI89DEV06.md): Hughes 269C · Millersville, IL · Accident · No injuries · Final report · Jun 6, 1989 · N7439F · Destroyed
  > Loss of rotor RPM for an undetermined reason during a turn to reverse direction while applying agricultural chemicals.
- [NTSB CHI89FA062](https://openairdocs.org/ntsb/CHI89FA062.md): Hughes 269C · De Kalb, IL · Accident · Serious injuries · Field investigation · Final report · Mar 22, 1989 · N8642F · Destroyed
  > Fatigue failure of the number four connecting rod which resulted in an engine failure. Factors in the accident were the broken ring in the number one piston and a deteriorated center main bearing.
- [NTSB CHI89LA029](https://openairdocs.org/ntsb/CHI89LA029.md): Mcdonnell Douglas 269C · Frankfort, IL · Accident · Minor injuries · Limited investigation · Final report · Nov 28, 1988 · N1098P · Substantial damage
  > The helicopter experienced a tree strike with the main rotor blades and then rolled over when it struck the ground during a precautionary landing attempt. The helicopter had been conducting contract power line patrol when the PIC noted an apparent partial…
- [NTSB CHI88DEE07](https://openairdocs.org/ntsb/CHI88DEE07.md): Hughes 269C · Sandwich, IL · Accident · No injuries · Final report · Jul 21, 1988 · N7425F · Substantial damage
  > The plt rprtd that while he was conducting spraying opns, he noted a significant loss of eng power. He made a run-on landing in a bean field. As he landed, the left skid dug into a furrow & the helicopter rolled over. During the investigation, which included…
- [NTSB CHI87LA150](https://openairdocs.org/ntsb/CHI87LA150.md): Hughes 300C · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Jun 17, 1987 · N3625B · Substantial damage
  > While the student & instructor (CFI) were on an instructional flt, a decision was made to practice an autorotation & simulated tail rotor failure. Rprtdly, a smooth touchdown was made, but the helicopter began to vibrate. The CFI electedto get the helicopter…
- [NTSB CHI85FA210](https://openairdocs.org/ntsb/CHI85FA210.md): Hughes 300 · Joliet, IL · Accident · Minor injuries · Field investigation · Final report · May 26, 1985 · N404Z · Destroyed
  > The helicopter experienced extreme vertical vibrations while landing from a hover. Inadvertent ground contact during uncontrolled oscillations resulted in destruction of the helicopter.
- [NTSB UNK64X2599](https://openairdocs.org/ntsb/UNK64X2599.md): Hughes 269A · Andalusia, IL · Accident · Minor injuries · Closed · Jul 1, 1964 · N8748F · 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."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41524&state=IL

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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.