# NTSB investigations: CFM International CFM56 series: Near midair/TCAS alert/loss of separation

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 OPS26LA036](https://openairdocs.org/ntsb/OPS26LA036.md): Boeing 737-7CT · Orlando, FL · Incident · Class 4 · Limited · Investigation open · Apr 8, 2026 · N566WN · 3 aircraft · No damage
- [NTSB DCA25LA306](https://openairdocs.org/ntsb/DCA25LA306.md): Airbus Industrie A320-212 · Chase City, VA · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 28, 2025 · N373NW · No damage
  > The abrupt maneuver required to comply with a traffic alert and collision avoidance system resolution advisory during descent.
- [NTSB DCA21WA202](https://openairdocs.org/ntsb/DCA21WA202.md): Boeing 737-824 · Mexico City, Mexico · Incident · Class 5 · Foreign · Jul 29, 2021 · N36272 · No damage
- [NTSB OPS11IA101](https://openairdocs.org/ntsb/OPS11IA101.md): Boeing 737-832 · 66 NM East of Hobe Sound, FL · Incident · No injuries · Incident investigation · Final report · Nov 11, 2010 · N3742C · 2 aircraft · No damage
  > Air traffic controllers did not maintain required awareness of available flight data and aircraft positions, resulting in issuance of an incorrect altitude clearance that caused a loss of standard instrument flight rules separation between the two aircraft.
- [NTSB OPS10IA574](https://openairdocs.org/ntsb/OPS10IA574.md): Airbus Industrie A320-214 · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · Sep 16, 2010 · N122US · 2 aircraft · No damage
  > The Local North Controller's issuance of a left-turn heading to the Airbus without establishing the position and heading of the Beech. Contributing to the incident was the Local South Controller's distraction with a ground movement operation and lack of…
- [NTSB OPS10IA014](https://openairdocs.org/ntsb/OPS10IA014.md): Boeing 737 · Worton, MD · Incident · No injuries · Incident investigation · Final report · Mar 25, 2010 · N27239 · 2 aircraft · No damage
  > The R10/12 controller issued an improper vector and descent clearance to the GII that put the airplane on a coverging flight path with the B737. Contributing to the incident was the failure of the FAA's training program to correct ongoing controller…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('13802')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '260'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/260/cases?engine=13802

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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.