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Last updated: 24 October 2020
Statuts:Enquête Officielle
Date:dimanche 7 avril 2013
Heure:ca 16:13 UTC
Type/Sous-type:Silhouette image of generic B190 model; specific model in this crash may look slightly different
Beechcraft 1900C-1
Opérant pour:Group Transair
Loué à :Sahel Aviation Service
Immatriculation: ZS-PHL
Numéro de série: UC-74
Année de Fabrication: 1989
Heures de vol:23388
Cycles:29117
Moteurs: 2 Pratt & Whitney Canada PT6A-65B
Equipage:victimes: 1 / à bord: 1
Passagers:victimes: 0 / à bord: 0
Total:victimes: 1 / à bord: 1
Dégats de l'appareil: Disparu
Conséquences: Presumed damaged beyond repair
Lieu de l'accident:14,5 km (9.1 milles) de São Tomé Island Airport (TMS) (   Sao Tomé-et-Principe)
Phase de vol: En approche (APR)
Nature:Convoyage
Aéroport de départ:Ondangwa Airport (OND/FYOA), Namibie
Aéroport de destination:São Tomé Island Airport (TMS/FPST), Sao Tomé-et-Principe
Détails:
The aircraft was to be ferried from Lanseria airport (FALA) in South Africa to Bamako airport (GABS) in Mali, with a stopover at Ondangua Airport (FYOA) in Namibia, São Tomé International Airport (FPST) in São Tomé and Príncipe and Accra Airport (DGAA) in Ghana.
The aircraft had been in Lanseria Airport for a maintenance check. Prior to the planned flight, the aircraft underwent flight check for 45 minutes after completed planned maintenance on April 6th, flown by the Captain and another pilot.
The aircraft departed FALA to FYOA for its first stop over with a flight time of 03:35h. The planned departure from FYOA was delayed due to trouble in starting the right engine. The aircraft took off at 10:21 hrs contrary to planned 08:30 hrs.
For the second leg of the flight, the aircraft departed FYOA to FPST with a filed flight plan of 5 hours and 20 minutes (flight time) having FYOA as alternate.
Leaving the Namibian airspace the pilot only contacted Luanda ATC and São Tomé Tower as destination. At the time of the flight the west coast of Africa in the vicinity of Gulf of Guinea had widespread moderate to severe thunderstorm activity with lighting and heavy rain.
When initiating descent to São Tomé from FL 200 to 4000 feet as instructed by São Tomé ATC, the pilot was advised that weather was gradually deteriorating at the airport. At 16:10 hrs the pilot had the last radio contact with São Tomé Tower, informing them about his position which was 9 nm inbound to São Tomé VOR at 4000 feet and also informed the ATC that he was encountering heavy rain.
Having lost contact with the aircraft at 16:13 hrs, the São Tomé ATC tried several times to contact the airplane
A Search and Rescue operation started on 7 April 2013 the same day the accident occurred and was conducted on the sea and on the island; no trace of aircraft or its debris, pilot or any cargo were found. The search was terminated on 20 April at 1730hrs.

Probable Cause:

Probable Causal Factors
By the fact that there is no evidence of the crash, the cause of the accident cannot be conclusively decided, however the investigation discovered series of discrepancies and non-compliance which includes:
a. Pilot:
i. Planned long flight as solo pilot from Lanseria to Bamako is excessive for pilot fatigue perspective (over 15 hours flying).
ii. The First Class FAA (USA) medical Certificate issued on April 23rd 2012 had expired on October 31st 2012.
b. Meteorological Conditions:
i. Adverse weather conditions enroute and on arrival on that day, the west coast of Africa in the vicinity of Gulf of Guinea had widespread moderate to severe thunderstorm activity with lighting and heavy rain. When initiating descent to Sao Tome, the pilot was advised that weather was gradually deteriorating at airport vicinity.

Accident investigation:
cover
Investigating agency: CNIPAIA
Status: Investigation completed
Duration: 5 years and 8 months
Accident number: GT/07/04/2013/RF
Download report: Final report

Sources:
» Angop
» Small Plane With U.S. Pilot Missing Off West Africa (AP, 12-4-2013)


Opérations de secours

issued 4 Safety Recommendations

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Photos

photo of Beechcraft-1900C-1-TR-LFP
accident date: 07-04-2013
type: Beechcraft 1900C-1
registration: TR-LFP
 

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 Ondangwa Airport et São Tomé Island Airport est de 2259 km (1412 miles).
Accident location: Global; accuracy within tens or hundreds of 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.
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