# NTSB investigations, PA: Unknown or undetermined

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 ERA27LA006](https://openairdocs.org/ntsb/ERA27LA006.md): Cessna 525 · Bedford, PA · Accident · Serious injuries · Limited investigation · Investigation open · Oct 7, 2026 · N600AL
- [NTSB ERA25MA106](https://openairdocs.org/ntsb/ERA25MA106.md): Learjet 55 · Philadelphia, PA · Accident · 7 fatal · Class 2 · Major · Preliminary report · Jan 31, 2025 · XA-UCI · Destroyed
  > On January 31, 2025, at 1807 eastern standard time, a Learjet 55 airplane, Mexican registration XA-UCI (call sign MTS056) was destroyed when it was involved in an accident in Philadelphia, Pennsylvania. The two pilots, two medical crewmembers, and two…
- [NTSB ERA25LA044](https://openairdocs.org/ntsb/ERA25LA044.md): Schweizer 269C-1 · Boalsburg, PA · Accident · No injuries · Class 3 · Limited · Final report · Nov 10, 2024 · N504JN · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB ERA23LA383](https://openairdocs.org/ntsb/ERA23LA383.md): Cessna 182 · Towanda, PA · Accident · No injuries · Class 3 · Limited · Final report · Sep 30, 2023 · N747UC · Substantial damage
  > A total loss of engine power during initial climb for undetermined reasons.
- [NTSB ERA22FA105](https://openairdocs.org/ntsb/ERA22FA105.md): Eurocopter Deutschland EC135 P2+ · Drexel Hill, PA · Accident · Serious injuries · Class 3 · Field · Final report · Jan 11, 2022 · N531LN · Substantial damage
  > An inflight attitude upset for undetermined reasons that resulted in a rotor system overspeed, a reduction of power from both engines, and a subsequent hard landing.
- [NTSB ERA22LA039](https://openairdocs.org/ntsb/ERA22LA039.md): Bell 47D1 · Zelienople, PA · Accident · No injuries · Class 3 · Limited · Final report · Oct 31, 2021 · N132BR · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB ERA15LA001](https://openairdocs.org/ntsb/ERA15LA001.md): Air Command 582 · Monongahela, PA · Accident · 1 fatal · Limited investigation · Final report · Oct 1, 2014 · UNREG · Substantial damage
  > The amateur-built gyroplane’s collision with terrain for reasons that could not be determined based on the available information. Contributing to the accident was the pilot’s decision to conduct the flight without obtaining additional training.
- [NTSB ERA11FA299](https://openairdocs.org/ntsb/ERA11FA299.md): Piper PA-22-150 · Benezette, PA · Accident · 1 fatal · Field investigation · Final report · May 13, 2011 · N7603D · Substantial damage
  > The pilot's loss of airplane control for reasons that could not be determined from the available evidence.
- [NTSB ERA11FA293](https://openairdocs.org/ntsb/ERA11FA293.md): Beech F33A · Tarentum, PA · Accident · Serious injuries · Field investigation · Final report · May 11, 2011 · N17825 · Substantial damage
  > The pilot's delay in aborting the takeoff, which resulted in a runway overrun. Contributing to the accident was the pilot's inadequate preflight planning and excessive loading of the airplane.
- [NTSB ERA09LA410](https://openairdocs.org/ntsb/ERA09LA410.md): Robinson R44 · Silver Spring, PA · Accident · No injuries · Limited investigation · Final report · Jul 19, 2009 · N25VH · Substantial damage
  > The student pilot's inability to fully control the helicopter, during cruise and the resultant off-field hard landing.

## 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" = 'PA' 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" = '000' 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/000/sequence?state=PA

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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.