ASN Wikibase Occurrence # 271015
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| Date: | Saturday 18 December 2021 |
| Time: | 08:45 |
| Type: |  Bell 206B JetRanger III |
| Owner/operator: | Delta Helicopteros |
| Registration: | HK-4511 |
| MSN: | 2344 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 17884 hours |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Cerro Santa Ana, Cajibío, Cauca -
 Colombia
|
| Phase: | Landing |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Cali-Alfonso Bonilla Aragón Airport (CLO/SKCL) |
| Cerro Santa Ana | |
| Investigating agency: | Aerocivil |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Bell 206B-III aircraft, registration HK-4511, was conducting a flight to transport two passengers from Alfonso Bonilla Aragón Airport (SKCL), Palmira, Valle del Cauca, to Cerro Santa Ana located in the municipality of Cajibío, Cauca department. During the approach to land, a gust of wind forced the pilot to correct the position using the left pedal and gently reduce power with the collective. However, the tail rotor lost effectiveness, the pilot's actions were not successful, and the aircraft lost lift.
As a consequence of the loss of control, the aircraft struck a containment wall adjacent to the heliport and a guard booth next to it. Consequently, it landed abruptly on the ground and came to rest a few meters east of the desired landing point. The pilot performed an emergency shutdown and directed the evacuation of the occupants, who were uninjured. The helicopter suffered substantial damage.
The investigation determined that the accident occurred due to the following probable cause: Crew misjudgment in not adequately identifying the relative wind direction and incorrectly selecting the approach course, which did not allow for a suitable area for a go-around (if needed). This condition allowed the relative wind to impact the aircraft at its critical azimuth, resulting in a loss of directional control (loss of tail rotor effectiveness) and subsequent impact with the terrain.
Contributing factors identified were as follows: Inadequate flight planning by the pilot in not anticipating the threats and risks of the operation, such as wind conditions affecting the approach to a critical field. Inadequate performance in the Loss of Effectiveness emergency, leading the aircraft into extreme controllability conditions. Deficient operational standards of the operator that did not allow for anticipating the operation's inherent risks in a critical heliport. Incorrect installation of the wind vane at the landing site, which could provide inaccurate indications.
Accident investigation:
 |
|
Sources:
Aviación Comercial en Colombia
https://cdn.jetphotos.com/full/6/96740_1600222013.jpg (photo)
Location
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Dec-2021 23:17 | Captain Adam | Added |
| 21-Dec-2021 06:38 | harro | Updated |
| 21-Dec-2021 06:42 | harro | Updated [Nature] |
| 21-Dec-2021 06:42 | harro | Updated [[Nature]] |
| 21-Dec-2021 06:45 | harro | Updated [Narrative] |
| 24-Dec-2021 14:18 | Aerossurance | Updated [Embed code, Narrative] |
| 15-Nov-2023 14:36 | harro | Updated [Date, Total occupants, Other fatalities, Nature, Category, Accident report] |
| 16-Nov-2023 13:24 | harro | Updated [Time, Other fatalities, Location, Departure airport, Destination airport, Narrative] |
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