ASN Wikibase Occurrence # 264532
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| Date: | Thursday 26 September 2019 |
| Time: | c. 18:25 LT |
| Type: |  Eurocopter AS 350B2 Ecureuil |
| Owner/operator: | Monaco Heli-loc |
| Registration: | 3A-MLC |
| MSN: | 2700 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Col de Véry, Haute-Savoie 74 -
 France
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Carros, near Nice |
| Villers le lac | |
| Investigating agency: | BEA |
| Confidence Rating: |  Accident investigation report completed and information captured |
In cruise between 10,000 and 12,000 ft, the pilot noticed the illumination of the engine chip warning light. He decided to divert to Megève altiport. Shortly after starting the descent, he heard a suspicious noise after which he set the engine to idle and started an autorotation. A witness saw the helicopter descending, he heard a detonation and saw smoke coming out of the engine. At the end of the final approach at the Col de Very (2,000 m), the pilot increased power. During the flare, the main rotor struck the drive shaft. The helicopter came to a standstill on its skids.
Contributing factors
The accumulation of laterite in the hollow shaft of module 3 shows that the helicopter was operated in a dusty atmosphere and most likely in a sustained way considering the quantity of laterite which was found during the examination of the engine. The incorrect assessment by the approved Continuing Airworthiness Management Organizations (CAMO) as to the environment in which the engine operated did not allow for the implementation of, as required by Service Bulletin Order (SBI) A292 72 0230 version C, a periodical cleaning of the hollow shaft of module 3. In the absence of a periodic inspection, laterite may have accumulated.
Accident investigation:
 |
|
Sources:
https://bea.aero/en/investigation-reports/notified-events/detail/accident-to-the-airbus-as350-registered-3a-mlc-on-26-09-2019-at-the-col-de-very/
http://aerossurance.com/helicopters/arriel-camo-dusty-laterite/
Location
Images:
Photo: BEA
Media:
#BEA suggest miscommunication about the operating environment in an #engine AD not being applied, missing the chance of early detection of an impending failure.https://t.co/Na2lPOPeny#helicopter #accident #camo #airworthiness #flightsafety #aviationsafety pic.twitter.com/9UAqLKlGYN
— Aerossurance (@Aerossurance) July 10, 2021
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Jun-2021 20:01 | harro | Added |
| 24-Jun-2021 20:02 | harro | Updated [Photo] |
| 10-Jul-2021 11:04 | Aerossurance | Updated [Aircraft type, Departure airport, Destination airport, Narrative] |
| 10-Jul-2021 11:57 | Aerossurance | Updated [Time, Source] |
| 10-Jul-2021 12:10 | Aerossurance | Updated [Embed code] |
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