# NTSB investigations: Aerospatiale AS 355 F ECUREUIL

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 FTW99FA001](https://openairdocs.org/ntsb/FTW99FA001.md): Bell 407 · Vermilion 331 · Accident · 1 fatal · Field investigation · Final report · Oct 5, 1998 · N403PH · 2 aircraft · Destroyed
  > the failure of both pilots to see and avoid each other's aircraft during cruise flight. Factors were the failure of both pilots to use a known safety advisory recommendation and the failure of both operators to implement the recommendation as a company…
- [NTSB NYC97LA058](https://openairdocs.org/ntsb/NYC97LA058.md): Aerospatiale AS-355F · Washington, PA · Accident · Minor injuries · Limited investigation · Final report · Mar 5, 1997 · N101UC · Substantial damage
  > The malfunction of a cyclic servo which resulted in a cyclic hard over at a hover.
- [NTSB SEA92LA029](https://openairdocs.org/ntsb/SEA92LA029.md): Aerospatiale AS355F1 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Oct 29, 1991 · N101UC · Substantial damage
  > The unlatching and subsequent opening inflight of the left-rear engine cowl door. A factor contributing to the accident was the failure of company maintenance personnel to execute the manufacturer's service bulletin.
- [NTSB LAX89FA136](https://openairdocs.org/ntsb/LAX89FA136.md): Aerospatiale AS-355-F · Bear Valley, CA · Accident · No injuries · Field investigation · Final report · Mar 26, 1989 · N84MH · Substantial damage
  > Improper in-flight planning/decision by the pilot, which resulted in a loss of aircraft control during a slow speed, downwind approach to a high altitude stolport. Contributing factors were: high density altitude, tailwind, improper weather evaluation by the…
- [NTSB FTW89FA013](https://openairdocs.org/ntsb/FTW89FA013.md): Aerospatiale AS-355F-1 · W. Cameron 617 · Accident · 4 fatal · Field investigation · Final report · Nov 4, 1988 · N355EH · Destroyed
  > The loss of control of the aircraft which occurred when the tail rotor drive shaft experienced a fatigue induced material failure and tail rotor thrust was lost. Evidence indicated that the shaft was under designed for the loads that were encountered during…
- [NTSB ATL88IA171](https://openairdocs.org/ntsb/ATL88IA171.md): Aerospatiale AS-355-F · Reidsville, NC · Incident · No injuries · Incident investigation · Final report · May 13, 1988 · N101UC · Minor damage
- [NTSB FTW87FA203](https://openairdocs.org/ntsb/FTW87FA203.md): Aerospatiale AS-355F-1 · Ship Shoal 214c · Accident · Serious injuries · Field investigation · Final report · Aug 19, 1987 · N359E · Substantial damage
  > Acft experienced a tail rotor drive shaft failure during t/o from an offshore platform. Acft spun left and completed 6 to 7 revolutions prior to water contact as the single plt could not reach the throttles to reduce pwr to idle. Acft landed hard and the rt…
- [NTSB ATL85FA234](https://openairdocs.org/ntsb/ATL85FA234.md): Aerospatiale AS-355F · Chamblee, GA · Accident · Serious injuries · Field investigation · Final report · Aug 4, 1985 · N299FE · Destroyed
  > Reportedly, the plt & passengers had gone to a local establishment, where the entire party had consumed an unspecified amount of alcoholic beverages. One passenger reported that after arriving at the arpt, the plt made a walk-around inspection of the…
- [NTSB FTW84LA314](https://openairdocs.org/ntsb/FTW84LA314.md): Aerospatiale AS-355F · El Paso, TX · Accident · No injuries · Limited investigation · Final report · Jul 20, 1984 · N240US · Substantial damage
  > The helicopter encountered turbulence and downdrafts during landing. The acft impacted the asphalt ramp slightly nose low and bounced 2-3 ft into the air. The nose dipped more and full aft cyclic was applied. The main rotor blades hit the ground and the acft…
- [NTSB FTW84LA265](https://openairdocs.org/ntsb/FTW84LA265.md): Aerospatiale AS 355 F Ecureuil · Venice, LA · Accident · No injuries · Limited investigation · Final report · May 30, 1984 · N5777J · Substantial damage
  > The plt landed to secure a seat belt flapping on the outside of the fuselage. The area chosen for landing was soft and the acft began to settle into the mud. The plt initiated takeoff and when the acft freed itself from the mud it started spinning. The plt…
- [NTSB FTW84FA189](https://openairdocs.org/ntsb/FTW84FA189.md): Aerospatiale AS 355F · W Cameron 540 · Accident · 4 fatal · Field investigation · Final report · Apr 5, 1984 · N5791Z · Destroyed
  > While the plt was taking off from an unmanned rig, the tail section of the helicopter contacted a rotating beacon support bracket on top of a crane structure. The crane structure was located below the elevation of the landing pad. The helicopter then crashed…
- [NTSB FTW84FA107](https://openairdocs.org/ntsb/FTW84FA107.md): Aerospatiale AS-355F · Morgan City, LA · Accident · 2 fatal · Field investigation · Final report · Jan 4, 1984 · N5792X · Destroyed
  > The plts in a helicopter encountered foggy weather during a positioning flt and crashed into a lake about 4 mi from the departure point, a fisherman who witnessed the accident said the acft descended into the water in a nose low attitude. The acft skipped and…
- [NTSB LAX84FA095](https://openairdocs.org/ntsb/LAX84FA095.md): Aerospatiale AS 355F · Black Mountain, NV · Accident · 3 fatal · Field investigation · Final report · Dec 7, 1983 · N57901 · Destroyed
  > The helicopter tookoff on an air ambulance flt at about 1219 PST. According to tower personnel, the departure appeared normal. Radar service was terminated at 1227 & there was no further radio contact with the helicopter. Later, the helicopter was found where…

## 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 ('8680806'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8680806

---
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.
