ASN Wikibase Occurrence # 284759
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| Date: | Monday 28 April 1997 |
| Time: | |
| Type: |  SNIAS SA 313B Alouette II |
| Owner/operator: | Challeng’air |
| Registration: | F-BYCX |
| MSN: | 1647 |
| Year of manufacture: | 1961 |
| Fatalities: | Fatalities: 3 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Bièvres -
 France
|
| Phase: | En route |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Toussus-le-Noble |
| Toussus-le-Noble | |
| Investigating agency: | BEA |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot took off from Toussus-le-Noble to carry out a tourist circuit around Paris with three passengers on board. Shortly after, he contacted the controller at Villacoublay to cross his zone. The latter asked him to call back thirty seconds before crossing the boundary. The pilot acknowledged receipt of the instruction and called back shortly afterwards. A few moments later, the controller informed him of IFR traffic on final approach to Toussus-le-Noble. The pilot did not respond.
Conclusion
The accident was due to the jamming of the freewheel rollers in the "rest" position causing the helicopter to pass into autorotation above an area not conducive to an emergency landing. This freewheel malfunction was probably favored by a lack of inspection and maintenance that did not comply with the manufacturer's recommendations.
The location of the emergency beacon at the front of the cabin contributed to its damage and failure to function after the impact, which led, in the absence of direct witnesses, to the delay of the arrival relief.
Accident investigation:
 |
|
Sources:
https://bea.aero/en/investigation-reports/notified-events/detail/le-pilote-decolle-de-laerodrome-de-toussus-le-noble-78-pour-effectuer-un-circuit-touristique-au
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Oct-2022 07:12 | harro | Added |
Corrections or additions? ... Edit this accident description
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