# NTSB investigations, 1990: 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 MKC90LA131](https://openairdocs.org/ntsb/MKC90LA131.md): Eugene M. Veras Polliwagon 150 · St. Charles, MO · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 1990 · N21EV · Substantial damage
  > The flight control system-stick was loose resulting in an stall.
- [NTSB CHI90IA106](https://openairdocs.org/ntsb/CHI90IA106.md): Nihon YS-11A-600F · West Lafayette, IN · Incident · No injuries · Incident investigation · Final report · Apr 3, 1990 · N112MP · No damage
  > An undetected accumulation of ice on the horizontal stabilizer. Relating factors were the manufacturer's lack of information and aircraft manuals relative to the understanding of, and appropriate procedures to prevent the loss of control.

## 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 year(c."eventDate") = 1990
  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&year=1990

---
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.