# NTSB investigations, PR: Aerodynamic stall/spin

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 ERA25LA275](https://openairdocs.org/ntsb/ERA25LA275.md): Piper PA28 · San Juan, PR · Accident · No injuries · Class 4 · Limited · Final report · Jul 21, 2025 · N4187U · Substantial damage
  > The student pilot’s excessing pitch attitude during takeoff, which resulted in a loss of aircraft control and aerodynamic stall.
- [NTSB ERA17LA227](https://openairdocs.org/ntsb/ERA17LA227.md): Piper PA28 · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Jul 4, 2017 · N9427J · Substantial damage
  > A partial loss of engine power during initial climb for reasons that could not be determined and the pilot's subsequent exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall.
- [NTSB ERA11LA056](https://openairdocs.org/ntsb/ERA11LA056.md): Carlo Robert Quicksilver SPT 2S · Lajas, PR · Accident · 1 fatal · Limited investigation · Final report · Nov 13, 2010 · N5593F · Substantial damage
  > The pilot’s failure to maintain adequate airspeed, which resulted in an aerodynamic stall and entry into a spin.
- [NTSB NYC08LA225](https://openairdocs.org/ntsb/NYC08LA225.md): Rans Rans S-6ES · Lajas, PR · Accident · 2 fatal · Limited investigation · Final report · Jun 22, 2008 · N131PR · Substantial damage
  > The pilot's failure to maintain airspeed resulting in an inadvertent stall/spin.

## 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" = 'PR' 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" = '241' 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/241/sequence?state=PR

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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.