# NTSB investigations, IL: Altitude deviation,uncontrolled

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 CHI98LA269](https://openairdocs.org/ntsb/CHI98LA269.md): Boeing 767-223 · Peotone, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 1998 · N335AA · No damage
  > In-flight encounter with turbulence.
- [NTSB DCA98MA023](https://openairdocs.org/ntsb/DCA98MA023.md): Boeing 727-223 · Chicago, IL · Accident · Minor injuries · Class 1 · Major · Final report · Feb 9, 1998 · N845AA · Substantial damage
  > the failure of the flight crew to maintain a proper pitch attitude for a successful landing or go-around. Contributing to the accident were the divergent pitch oscillations of the airplane, which occurred during the final approach and were the result of an…
- [NTSB CHI97LA285](https://openairdocs.org/ntsb/CHI97LA285.md): British Aerospace BAE-ATP · Peru, IL · Accident · Serious injuries · Limited investigation · Final report · Sep 7, 1997 · N855AW · No damage
  > sudden/unexpected encounter with clear air turbulence.
- [NTSB CHI94LA275](https://openairdocs.org/ntsb/CHI94LA275.md): Thunder and Colt 120A · Bloomington, IL · Accident · Serious injuries · Limited investigation · Final report · Aug 16, 1994 · N416TC · Substantial damage
  > the unforcast, unanticipated adverse wind conditions and thermal activity. A factor was the powerlines.
- [NTSB CHI93LA192](https://openairdocs.org/ntsb/CHI93LA192.md): Aerospatiale ATR-72-212 · Chicago, IL · Accident · Serious injuries · Limited investigation · Final report · Jun 4, 1993 · N345AT · No damage
  > The pilot in command's improper in-flight planning/decision.
- [NTSB CHI88FA048](https://openairdocs.org/ntsb/CHI88FA048.md): Boeing 767-200 · Chicago, IL · Accident · Serious injuries · Field investigation · Final report · Jan 20, 1988 · N306AA · No damage
  > A flight attendant and a passenger received serious and minor injuries respectively during an inflight encounter with severe turbulence during an enroute descent. Greater than moderate turbulence was forecast to be in the area and severe turbulence had been…
- [NTSB CHI84LA260](https://openairdocs.org/ntsb/CHI84LA260.md): Balloon Works Firefly 7 · Geneva, IL · Accident · Serious injuries · Limited investigation · Final report · Jun 24, 1984 · N1537D · Minor damage
  > The Balloon descended in an area of thunderstorms and turbulence and collided with trees. The plt said the Balloon 'caved in' and descended rapidly. The plts husband and a passenger revealed that the Balloon was 'vented' by the plt to land before reaching a…

## 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 110)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=110&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.