# NTSB investigations, PR: Not determined, general

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 ERA18LA271](https://openairdocs.org/ntsb/ERA18LA271.md): Bell OH 58A · Juana Diaz, PR · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 24, 2018 · N206WH · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [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 ERA15LA323](https://openairdocs.org/ntsb/ERA15LA323.md): Cessna 150 · Dorado, PR · Accident · Serious injuries · Limited investigation · Final report · Aug 22, 2015 · N4057V · Substantial damage
  > A short circuit of unknown origin, which resulted in electrical arcing in the engine compartment and smoke in the cockpit, which necessitated a precautionary landing to a field.
- [NTSB ERA15LA151](https://openairdocs.org/ntsb/ERA15LA151.md): Piper PA23 · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Mar 9, 2015 · N1153P · Substantial damage
  > The total loss of right engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB ERA14LA465](https://openairdocs.org/ntsb/ERA14LA465.md): Britten-Norman BN-2A · Ceiba, PR · Accident · Minor injuries · Limited investigation · Final report · Sep 28, 2014 · N906GD · Substantial damage
  > The pilot’s loss of consciousness during taxi for reasons that could not be determined based on the available information.
- [NTSB ERA14LA007](https://openairdocs.org/ntsb/ERA14LA007.md): Britten-Norman BN-2A-8 · Culebra, PR · Accident · 1 fatal · Limited investigation · Final report · Oct 6, 2013 · N909GD · Substantial damage
  > The pilot's failure to maintain airplane control for reasons that could not be determined because the wreckage was not recovered.
- [NTSB ERA13LA152](https://openairdocs.org/ntsb/ERA13LA152.md): Robinson Helicopter R44 II · Ciales, PR · Accident · Minor injuries · Limited investigation · Final report · Mar 2, 2013 · N834RC · Destroyed
  > A loss of main rotor rpm for reasons that could not be determined because an examination of the helicopter’s engine and associated components did not reveal any mechanical malfunctions or failures that would have precluded normal operation.
- [NTSB ERA11LA037](https://openairdocs.org/ntsb/ERA11LA037.md): Piper PA-31-350 · Aguadilla, PR · Accident · No injuries · Limited investigation · Final report · Oct 27, 2010 · N350RL · Substantial damage
  > The pilot's improper decision to ditch the airplane after a reported partial loss of engine power and overheat on one engine for undetermined reasons.
- [NTSB ERA10TA215](https://openairdocs.org/ntsb/ERA10TA215.md): Cessna 404 · Ponce, PR · Accident · No injuries · Final report · Apr 7, 2010 · N6035 · Substantial damage
  > A loss of power to the right engine for undetermined reasons.
- [NTSB ERA09LA413](https://openairdocs.org/ntsb/ERA09LA413.md): Cessna 152 · Ponce, PR · Accident · 1 fatal · Limited investigation · Final report · Jul 19, 2009 · N5518P · Destroyed
  > The airplane’s impact with water for undetermined reasons.

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '05000000'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/05000000/cases?state=PR

---
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.