# NTSB investigations: Sikorsky S-76A: Airframe/component/system failure/malfunction

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 NYC92GA147](https://openairdocs.org/ntsb/NYC92GA147.md): Sikorsky S-76A · Graefenburg, KY · Accident · Serious injuries · Final report · Aug 7, 1992 · N50KY · Destroyed
  > An inadequate preflight inspection by the flight crew by failing to assure that all four of the engine cowling latches were properly secured, which resulted in subsequent failure of section ii of the tail rotor driveshaft after the cowling contacted the main…
- [NTSB NYC84FA319](https://openairdocs.org/ntsb/NYC84FA319.md): Sikorsky S-76A · Unionville, PA · Accident · Serious injuries · Field investigation · Final report · Sep 22, 1984 · N79K · Substantial damage
  > On approach, acft yawed right. Plt reduced power and executed emerg lndg. Before shutdown, it was noted the t/r was stationary while the main rotor continued to turn. Investigation revealed t/r drive shaft had separted due to thermal/mechanical damage…
- [NTSB CHI83FA428](https://openairdocs.org/ntsb/CHI83FA428.md): Sikorsky S-76A · Chicago, IL · Accident · Minor injuries · Field investigation · Final report · Sep 14, 1983 · N521AC · Destroyed
  > While cruising at 2000 ft MSL & 150 KTS, the crew heard a loud noise, and simultaneously, the helicopter yawed aprx 30 to 40 deg to the right & pitched nose down. The aircrew began an autorotation & activated the emergency floats. The helicopter continued in…

## 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.aircraft_model_code IN ('8143006')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8143006&occurrence=130

---
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.