# NTSB investigations: Hughes 269B, 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 CHI88FA214](https://openairdocs.org/ntsb/CHI88FA214.md): Hughes 269B · Hampton, IL · Accident · 3 fatal · Field investigation · Final report · Aug 21, 1988 · N9499F · Destroyed
- [NTSB CHI88FA190](https://openairdocs.org/ntsb/CHI88FA190.md): Mcdonnell Douglas 269B · Braceville, IL · Accident · 2 fatal · Field investigation · Final report · Aug 2, 1988 · N9522F · Destroyed
  > Conducting maneuvering flight the PIC failed to monitor the helicopter systems and allowed the main rotor RPM to decay to the point where it would not produce enough lift to sustain flight.
- [NTSB CHI84LA203](https://openairdocs.org/ntsb/CHI84LA203.md): Hughes 269B · Toulon, IL · Accident · No injuries · Limited investigation · Final report · May 20, 1984 · N9471F · Substantial damage
  > The plt landed the helicopter in a grassy area to talk to a friend. During departure, he flew over a corn field, & at that time, an empty paper/plastic corn seed sack was drawn up into the main rotor & a severe vibration began. He then landed in the field &…
- [NTSB CHI79FEV21](https://openairdocs.org/ntsb/CHI79FEV21.md): Hughes 269B · Flanagan, IL · Accident · No injuries · Closed · May 19, 1979 · N9323F · Substantial damage
- [NTSB CHI77FEE39](https://openairdocs.org/ntsb/CHI77FEE39.md): Hughes 269B · Chicago, IL · Accident · Minor injuries · Closed · Jul 31, 1977 · N9326F · 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.aircraft_model_code IN ('4470502'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470502&state=IL

---
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.