Détails:
A Cessna 208B Grand Caravan, operated by Makalu Air, impacted a mountainside at an altitude of 12,800 feet near Simikot, Nepal. Both crew members suffered fatal injuries.
The aircraft took off from Surkhet at 06:12 hours local time on a domestic cargo flight to Simikot, where it was scheduled arrive at 06:55. En route the flight crew received pilot reports from two other flights heading into Simikot. High clouds were reported and the pilot of a Dornier advised the crew to descend below the clouds.
The Cessna was left of the planned and continued at the same altitude, entering instrument conditions. The aircraft should have made an immediate right turn for appreciable time and then initiate left turn to follow Karnali River until reaching the base for runway 28 at Simikot, but continued straight ahead. The aircraft crossed Simikot Pass west of the normal crossing point and continued until it impacted a ridge at an altitude of 12800 feet, 7,7 nm (14,2 km) southeast of Simikot Airport.
Probable Cause:
The Commission determines the most probable cause of this accident was to continue the flight despite unfavorable weather conditions resulting inadvertent flight into instrument meteorological conditions and there by deviating from the normal track due to loss of situational awareness that aggravated the spatial disorientation leading to CFIT accident.
Contributing factors
- Possible effect of hypoxia due to flight for prolonged period in high altitude without oxygen supplement.
- Ineffective safety management of the company which prevented the organization from identifying and correcting latent deficiencies in risk management and inadequacies in pilot training.
» Hemant Arjyal
» kathmandupost.ekantipur.com
accident date: 16-05-2018
type: Cessna 208B Grand Caravan
registration: 9N-AJU
| Statuts: | Accident investigation report completed and information captured |
| Date: | mercredi 16 mai 2018 |
| Heure: | 06:45 |
| Type/Sous-type: |  Cessna 208B Grand Caravan |
| Compagnie: | Makalu Air |
| Immatriculation: | 9N-AJU |
| Numéro de série: | 208B0770 |
| Année de Fabrication: | 1999 |
| Heures de vol: | 15757 |
| Cycles: | 31540 |
| Moteurs: | 1 Pratt & Whitney Canada PT6A-114A |
| Equipage: | victimes: 2 / à bord: 2 |
| Passagers: | victimes: 0 / à bord: 0 |
| Total: | victimes: 2 / à bord: 2 |
| Dégats de l'appareil: | Détruit |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | Bahun Khark ( Népal)
|
| Élévation des lieux de l'accident: | 3901 m (12799 feet) amsl |
| Phase de vol: | En vol (ENR) |
| Nature: | Cargo |
| Aéroport de départ: | Surkhet Airport (SKH/VNSK), Népal |
| Simikot Airport (IMK/VNST), Népal |
A Cessna 208B Grand Caravan, operated by Makalu Air, impacted a mountainside at an altitude of 12,800 feet near Simikot, Nepal. Both crew members suffered fatal injuries.
The aircraft took off from Surkhet at 06:12 hours local time on a domestic cargo flight to Simikot, where it was scheduled arrive at 06:55. En route the flight crew received pilot reports from two other flights heading into Simikot. High clouds were reported and the pilot of a Dornier advised the crew to descend below the clouds.
The Cessna was left of the planned and continued at the same altitude, entering instrument conditions. The aircraft should have made an immediate right turn for appreciable time and then initiate left turn to follow Karnali River until reaching the base for runway 28 at Simikot, but continued straight ahead. The aircraft crossed Simikot Pass west of the normal crossing point and continued until it impacted a ridge at an altitude of 12800 feet, 7,7 nm (14,2 km) southeast of Simikot Airport.
Probable Cause:
Probable Cause:
The Commission determines the most probable cause of this accident was to continue the flight despite unfavorable weather conditions resulting inadvertent flight into instrument meteorological conditions and there by deviating from the normal track due to loss of situational awareness that aggravated the spatial disorientation leading to CFIT accident.
Contributing factors
- Possible effect of hypoxia due to flight for prolonged period in high altitude without oxygen supplement.
- Ineffective safety management of the company which prevented the organization from identifying and correcting latent deficiencies in risk management and inadequacies in pilot training.
Accident investigation:
 |
|
Sources:
» thehimalayantimes.com» Hemant Arjyal
» kathmandupost.ekantipur.com
Photos
accident date: 16-05-2018
type: Cessna 208B Grand Caravan
registration: 9N-AJU
Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Surkhet Airport et Simikot Airport est de 154 km (96 miles).
Accident location: Exact; as reported in the official accident report.
La distance entre Surkhet Airport et Simikot Airport est de 154 km (96 miles).
Accident location: Exact; as reported in the official accident report.
Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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