# NTSB investigations, 2013: External load event (Rotorcraft)

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 WPR14CA041](https://openairdocs.org/ntsb/WPR14CA041.md): Bell 206B · Superior, MT · Accident · No injuries · Data collection · Final report · Nov 2, 2013 · N888DR · Substantial damage
  > The pilot's failure to maintain aircraft control while maneuvering during a long-line operation.
- [NTSB CEN13LA461](https://openairdocs.org/ntsb/CEN13LA461.md): Hughes 369D · Ackerly, TX · Accident · 2 fatal · Limited investigation · Final report · Aug 5, 2013 · N8688F · No damage
  > The pilot’s failure to identify and maintain adequate clearance from a shield wire that was suspended between power transmission line towers.
- [NTSB WPR13GA338](https://openairdocs.org/ntsb/WPR13GA338.md): Bell HH-1H · Mount Charleston, NV · Accident · 1 fatal · Final report · Jul 23, 2013 · N233JP · No damage
  > The premature hoisting operation and the inadvertent disengagement of the hoist hook on the rescuer’s harness in dark night conditions. Contributing to the accident was a lack of direct audio communication between the rescuer and the hoist operator.
- [NTSB WPR13LA303](https://openairdocs.org/ntsb/WPR13LA303.md): Bell 206L-3 · Missoula, MT · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2013 · N868H · Substantial damage
  > The pilot's failure to prevent the helicopter from settling with power and to maintain proper position relative to an external load, which resulted in a loss of control and subsequent hard landing.
- [NTSB CEN13CA281](https://openairdocs.org/ntsb/CEN13CA281.md): Hughes 369D · Camdenton, MO · Accident · No injuries · Data collection · Final report · May 15, 2013 · N725M · Substantial damage
  > The piece of wood/tree that contacted the main rotor blade during the low altitude tree-trimming flight.

## 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 year(c."eventDate") = 2013
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '480' 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/480/sequence?year=2013

---
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.