Crash-aerien 06 MAY 2016 d'un Antonov An-2R N2AN - San Bernardino International Airport, CA (SBD)
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Statuts:Accident investigation report completed and information captured
Date:vendredi 6 mai 2016
Heure:12:00
Type/Sous-type:Silhouette image of generic AN2 model; specific model in this crash may look slightly different
Antonov An-2R
Compagnie:American Airpower Heritage Museum
Immatriculation: N2AN
Numéro de série: 1G210-55
Année de Fabrication: 1985
Heures de vol:2924
Moteurs: 1 Shvetsov ASh-62IR
Equipage:victimes: 0 / à bord: 1
Passagers:victimes: 0 / à bord: 1
Total:victimes: 0 / à bord: 2
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:1,3 km (0.8 milles) N of San Bernardino International Airport, CA (SBD) (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Entrainement
Aéroport de départ:Upland-Cable Airport, CA (CCB/KCCB), Etats-Unis d'Amérique
Aéroport de destination:San Bernardino International Airport, CA (SBD/KSBD), Etats-Unis d'Amérique
Détails:
An Antonov 2 biplane, N2AN, sustained substantial damage during a forced landing, following a reported loss of engine power during approach to the San Bernardino International Airport, California. The airplane was operated by the pilot as a familiarization flight. The commercial pilot and sole passenger were not injured. The airplane departed the Upland-Cable Airport, California, about 11:45.
The pilot stated to the NTSB that the flight was a familiarization flight for a new member of their chapter of the Commemorative Air Force. The flight departed the Cable airport and flew east along the mountains, headed to San Bernardino. They contacted the San Bernardino tower and were instructed to enter the crosswind for runway 24. As part of the before landing checklist, the pilot turned on the carburetor heat and switched the fuel tank selector to the right fuel tank. Shortly thereafter, the engine lost all power. The pilot attempted numerous times to restart the engine, but was unsuccessful.
The pilot realized that he would not be able to reach the airport, and decided to make a forced landing to a small field in a residential area. During the landing approach, the airplane contacted a power line. After touching down in the field the airplane nosed over and came to rest inverted, which resulted in substantial damage to the wings and fuselage.

During the postaccident examination of the airplane, about 16 ounces of water were removed from the fuel system. Water was present in the lower gascolator, the fine fuel filter (upper gascolator), and subsequent fuel line to the carburetor inlet. A brass screen at the carburetor inlet and 2 carburetor fuel bowl thumb screens also contained corrosion, water, and rust.
The approved aircraft inspection checklist called for washing the carburetor and main fuel filter every 50 hours and cleaning and/or replacing the fine fuel filter every 100 hours. The fine fuel filter is not easily accessible and not able to be drained during a preflight inspection. The mechanic who completed the most recent inspection stated that he did not drain or check the fine fuel filter. The last logbook entry that specifically stated the fuel filters were cleaned was about 4 years before the accident.

Probable Cause:

PROBABLE CAUSE: "The mechanic’s failure to inspect the fine fuel filter gascolator as required during the most recent inspection, which resulted in a total loss of engine power due to fuel contamination.

Accident investigation:

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Investigating agency: NTSB
Status: Investigation completed
Duration: 1 years
Accident number: WPR16LA101
Download report: Final report


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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 Upland-Cable Airport, CA et San Bernardino International Airport, CA est de 41 km (26 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.
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