ASN Wikibase Occurrence # 272960
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| Date: | Thursday 6 April 2017 |
| Time: | |
| Type: |  Bell 206B JetRanger III |
| Owner/operator: | Henley Air |
| Registration: | ZS-HCZ |
| MSN: | 4110 |
| Year of manufacture: | 1990 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | In the Kromvlei training area -
 South Africa
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Rand Aerodrome (FAGM) Gauteng province |
| Rand Aerodrome (FAGM) Gauteng province | |
| Investigating agency: | CAA S.A. |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot, accompanied by a student pilot, was involved in a training flight when the accident occurred. According to the pilot in command (instructor), who had approximately 2070 hours' helicopter flying experience and 120,7 flying hours on the helicopter type, the main rotor was rotating at low revolutions per minute (rpm) during the latter phase of the autorotation, and a hard landing followed. The main rotor then flexed and severed the tail boom. The helicopter was stopped and all electrically controlled components were switched off. Neither the instructor nor the student was injured during the event. The investigation revealed that the helicopter landed hard during autorotation resulting in the main rotors severing the tail boom. The hard landing was caused by the RPM dropping below minimum rotor speed.
PROBABLE CAUSE: During an autorotation landing, the helicopter RPM was allowed to drop below minimum allowed
Accident investigation:
 |
|
Sources:
S.A. CAA
History of this aircraft
Other occurrences involving this aircraft
| 19 March 2020 | ZS-HCZ | Private | 0 | near Vischgat, near Vereeniging | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Dec-2023 14:14 | harro | Updated [Other fatalities, Phase, Damage, Narrative] |
Corrections or additions? ... Edit this accident description
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