# NTSB CEN17WA339: Schweizer Schweizer 269C, Bonvilliers, France, July 5, 2017

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Foreign investigation
- Date: July 5, 2017
- Place: Bonvilliers, France
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Led by another country's authority
- NTSB office: Central Region
- Lead agency: Other
- NTSB case key (mKey): 95954
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN17WA339
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95954/pdf
- Page: https://openairdocs.org/ntsb/CEN17WA339

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md)

## Factual narrative

On July 5, 2017, a Schweizer 269C helicopter, French registration F-GHAF, experienced a dynamic rollover near Boinvilliers, France. During a simulated engine failure, the engine lost power. The instructor attempted to restart the engine unsuccessfully three times. During the autorotation, a skid caught on the ground, and the helicopter rolled onto its side.The accident investigation is under the jurisdiction and control of the French government. This report is for information purposes only and contains only information released by or obtained from the French government. Further information pertaining to this accident may be obtained from: Aircraft Accident Investigation Bureau Bureau d'Enquêtes et d'Analyses Zone Sud 200 rue de Paris Aêroport du Bourget 93350 Le Bourget Cedex France

## Aircraft

- Registration: F-GHAF (not matched to a registry record)
- Reported make and model: SCHWEIZER(HUGHES) SCHWEIZER 269C (UNDESIGNAT)
- Category: Helicopter
- Serial number: 61-1060
- Engines: Lycoming HIO-360-D1A reciprocating
- Fire: Unknown
- Flight: Instructional, Non-U.S., non-commercial
- Operator: Navipassion Sas
- Registered owner: Navipassion Sas

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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