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Last updated: 26 September 2021
Statuts:Enquête Officielle
Date:mercredi 10 mai 1989
Heure:14:30
Type/Sous-type:Silhouette image of generic BE20 model; specific model in this crash may look slightly different
Beechcraft 200 Super King Air
Compagnie:Mesa Airlines
Immatriculation: N39YV
Numéro de série: BB-39
Année de Fabrication: 1975
Heures de vol:10267
Moteurs: 2 Pratt & Whitney Canada PT6A-41
Equipage:victimes: 1 / à bord: 1
Passagers:victimes: 0 / à bord: 0
Total:victimes: 1 / à bord: 1
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Azusa, CA (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Convoyage
Aéroport de départ:Santa Monica Airport, CA (SMO/KSMO), Etats-Unis d'Amérique
Aéroport de destination:Farmington Municipal Airport, NM (FMN/KFMN), Etats-Unis d'Amérique
Détails:
Before the flight, the pilots of two Beechcraft 200 aircraft evaluated weather reports at a fixed base operation and made a computer weather inquiry. They departed Santa Monica Airport, CA (SMO), on a positioning flight to Farmington Municipal Airport, NM (FMN), without filing a flight plan. While en route, the lead aircraft was about 1 to 3 minutes ahead of the second aircraft. The second pilot reported they were at about 4500 ft msl as they neared mountains and the clouds were about 1000 ft above. As they continued eastward in a valley, the second pilot heard the lead pilot report he was 'going up.' This was the last known transmission from the lead aircraft. The second pilot continued his flight in VMC. Two days later, the lead aircraft was found, where it had crashed about 100 ft below the top of a 7400 ft mountain ridge. Impact occurred on a heading of about 030 deg. The mountain ridge was oriented on headings of 060 and 240 degrees.

Probable Cause:

PROBABLE CAUSE: "Improper in-flight planning/decision by the pilot, which resulted in has inadvertent flight into instrument meteorological conditions (IMC) and subsequent collision with mountainous terrain. The weather and terrain conditions were considered to be related factors."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 7 months
Accident number: LAX89FA192
Download report: Summary report

Sources:
» NTSB


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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 Santa Monica Airport, CA et Farmington Municipal Airport, NM est de 968 km (605 miles).

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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