Détails:
A Let L-410 aircraft crashed into Lake Yirol, South Sudan, close to the destination airport. Twenty of the 23 occupants suffered fatal injuries and the aircraft was destroyed.
The aircraft was owned by Slav-Air Company, Ukraine as of May, 2018. It had been overhauled in 2016-2017 after having been stored for eight years. The aircraft was operated by South West Aviation. On the day of the accident it was chartered by Baby Air Tours and Travel for a flight from Juba to Yirol.
The flight departed Juba, South Sudan, at 08:00 hours without having obtained a weather briefing. The visibility at Yirol worsened and thick was present in the area. The aircraft overflew the airstrip and started an approach while overhead Lake Yirol. Descent was continued until the aircraft impacted the surface of the lake.
The committee for the investigations of Slav air let410 aircraft registration UR-TWO has finally concluded that the cause of the accident at Yirol Eastern Lake State Republic of South Sudan was caused by a combination of the following factors:
1. Severely bad weather in the morning of the accident.( Not making a decision to return back to Juba or diverting to the nearest airportRumbek).
2. Pilot incompetency and error in setting the altimeter for Yirol airstrip before the crash. (Causing variations in altitude- flying at false altitude actually below the actual flight level).
3. Replacement of a faulty propeller in Pibor and not informing the safety department of the changes and not being given the release document for operations.
» Yirol plane crash caused by bad weather & negligence -Report (eyeradio.org, 9-5-2019)
accident date: 09-09-2018
type: Let L-410
registration:
| Statuts: | Accident investigation report completed and information captured |
| Date: | dimanche 9 septembre 2018 |
| Heure: | 08:45 |
| Type/Sous-type: |  Let L-410UVP |
| Opérant pour: | South West Aviation |
| Loué à : | Slav-Air |
| Immatriculation: | UR-TWO |
| Numéro de série: | 841328 |
| Année de Fabrication: | 1984 |
| Moteurs: | 2 Walter M-601B |
| Equipage: | victimes: 2 / à bord: 2 |
| Passagers: | victimes: 18 / à bord: 21 |
| Total: | victimes: 20 / à bord: 23 |
| Dégats de l'appareil: | Détruit |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | 1,6 km (1 milles) W of Yirol Airstrip ( Soudan du Sud)
|
| Phase de vol: | En approche (APR) |
| Nature: | Charter National |
| Aéroport de départ: | Juba Airport (JUB/HSSJ), Soudan du Sud |
| Yirol Airstrip (HSYL), Soudan du Sud |
A Let L-410 aircraft crashed into Lake Yirol, South Sudan, close to the destination airport. Twenty of the 23 occupants suffered fatal injuries and the aircraft was destroyed.
The aircraft was owned by Slav-Air Company, Ukraine as of May, 2018. It had been overhauled in 2016-2017 after having been stored for eight years. The aircraft was operated by South West Aviation. On the day of the accident it was chartered by Baby Air Tours and Travel for a flight from Juba to Yirol.
The flight departed Juba, South Sudan, at 08:00 hours without having obtained a weather briefing. The visibility at Yirol worsened and thick was present in the area. The aircraft overflew the airstrip and started an approach while overhead Lake Yirol. Descent was continued until the aircraft impacted the surface of the lake.
Probable Cause:
The committee for the investigations of Slav air let410 aircraft registration UR-TWO has finally concluded that the cause of the accident at Yirol Eastern Lake State Republic of South Sudan was caused by a combination of the following factors:
1. Severely bad weather in the morning of the accident.( Not making a decision to return back to Juba or diverting to the nearest airportRumbek).
2. Pilot incompetency and error in setting the altimeter for Yirol airstrip before the crash. (Causing variations in altitude- flying at false altitude actually below the actual flight level).
3. Replacement of a faulty propeller in Pibor and not informing the safety department of the changes and not being given the release document for operations.
Accident investigation:
 |
|
Sources:
» Radio Miraya» Yirol plane crash caused by bad weather & negligence -Report (eyeradio.org, 9-5-2019)
Photos
accident date: 09-09-2018
type: Let L-410
registration:
Video, social media
UPDATE: Here is a wreckage of an aircraft that plunged into Yirol River in Lakes state of #SouthSudan killing scores. Among the dead is an #Italian doctor and the Bishop of Yirol @unmissmedia @UNRIC_Italia @shiine2054 @IreneLasu @SebitWilliamKer @GShadar pic.twitter.com/OM41OFVI4n
— Radio Miraya (@RadioMiraya) September 9, 2018
We have conflicting figures; The information Minister in Eastern Lakes state says 19 people died leaving just two survivors - A young child and a pilot. But a doctor we have spoken with says 18 dead and three survivors have been taken to Yirol hospital #SouthSudan
— Radio Miraya (@RadioMiraya) September 9, 2018
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 Juba Airport et Yirol Airstrip est de 222 km (139 miles).
Accident location: Approximate; accuracy within a few kilometers.
La distance entre Juba Airport et Yirol Airstrip est de 222 km (139 miles).
Accident location: Approximate; accuracy within a few kilometers.
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.
languages: 
Soudan du Sud
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Let L-410
- 1138+ built
- 125ème loss
- 61ème accident fatal
- le accident 3ème le plus grave (à ce moment là)
- le accident 3ème le plus grave (en ce moment)
Soudan du Sud- le accident 5ème le plus grave (à ce moment là)
- le accident 5ème le plus grave (en ce moment)
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