ASN Wikibase Occurrence # 270840
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| Date: | Saturday 11 December 2021 |
| Time: | 04:20 UTC |
| Type: |  Bell 206L-3 LongRanger III |
| Owner/operator: | Private |
| Registration: | ZS-HXG |
| MSN: | 51346 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ultimate Heliport, Midrand -
 South Africa
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Ultimate Heliport, Midrand |
| New Tempe Aerodrome | |
| Investigating agency: | CAA S.A. |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Bell 206 took off uneventfully and during the climb approximately 2 minutes into the flight the pilot received a radio call from the ground crew at the AMO facility informing them about smoke that was coming from the engine compartment. The pilot immediately elected to turn back to the Heliport, during the turn back they noticed the engine chip detector light flashing in the cockpit. According to the eyewitness who observed the helicopter from the Ultimate-Heli’s helipad stated that during the approach for landing whilst at approximately 50feet (ft) above the heliport shoulder the helicopter was observed yawing violently to the left and began to lose height rapidly. The helicopter crashed 12ft below which was 10m from the heliport shoulder.
Post-accident examination revealed that the engine combustion chamber casing had cracked. The right-hand side engine compartment cowling sustained burn damages. The helicopter skid gears were spread sideways due to hard impact indicating loss of lift. The right skid gear sustained fracture damages.
Probable Cause/s
1 During short finals for a precautionary landing, the helicopter experienced an engine failure and landed hard just short of the helipad’s embankment. The engine failure was due to insufficient oil being supplied to the engine as a result of a damaged engine oil pressure supply hose, causing the Number 6 and 7 bearings to suffer thermal destruction which led
to an internal clash of rotating components, followed by the destruction of the 1st stage gas producer turbine.
Contributory Factors
1 Poor maintenance practise as the engine oil hose was not correctly secured to the required P-clamps as called for in the maintenance manual.
2 Non-compliance with regards to the safe standard and recommended practises established by the manufacturer as well as the Civil Aviation Regulations (CAR) 2011 as amended.
Accident investigation:
 |
|
Sources:
NTSB GAA22WA044
https://avcom.co.za/phpBB3/viewtopic.php?f=9&t=245934&sid=26fd626118dbc9688c1dff43730e6521
CAA S.A.
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Dec-2021 11:39 | Captain Adam | Added |
| 17-Dec-2021 18:26 | Anon. | Updated [Registration] |
| 17-Dec-2021 18:29 | harro | Updated [Total occupants, Phase, Source, Narrative] |
| 22-Jan-2022 16:25 | rotorspot | Updated [Registration, Country] |
| 05-Feb-2022 07:29 | Big Bucks Bernie | Updated [Location, Country, Category] |
| 10-Feb-2022 20:10 | harro | Updated [Registration, Cn, Departure airport, Source, Narrative] |
| 28-Nov-2023 14:55 | harro | Updated [Other fatalities] |
Corrections or additions? ... Edit this accident description
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