# NTSB investigations, MA: Low altitude operation/event

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 ERA14LA347](https://openairdocs.org/ntsb/ERA14LA347.md): Colt Balloons 160A · Clinton, MA · Accident · Serious injuries · Limited investigation · Final report · Jul 20, 2014 · N976TC · Minor damage
  > The pilot's inadequate preflight and inflight planning and improper landing site selection and approach path, which resulted in the balloon contacting powerlines during landing. Contributing to the accident was the Federal Aviation Administration's inadequate…
- [NTSB ERA09LA194](https://openairdocs.org/ntsb/ERA09LA194.md): Hughes 369D · Lee, MA · Accident · Serious injuries · Limited investigation · Final report · Mar 10, 2009 · N369RT · Substantial damage
  > The pilot's failure to maintain clearance from the overhead wire.

## 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" = 'MA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '220' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/220/sequence?state=MA

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