Crash-aerien 10 JUL 1991 d'un Beechcraft C99 Commuter N7217L - Birmingham Airport, AL (BHM)
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Statuts:Accident investigation report completed and information captured
Date:mercredi 10 juillet 1991
Heure:18:12
Type/Sous-type:Silhouette image of generic BE99 model; specific model in this crash may look slightly different
Beechcraft C99 Commuter
Compagnie:L'Express Airlines
Immatriculation: N7217L
Numéro de série: U-226
Année de Fabrication: 1984
Moteurs: 2 Pratt & Whitney Canada PT6A-36
Equipage:victimes: 1 / à bord: 2
Passagers:victimes: 12 / à bord: 13
Total:victimes: 13 / à bord: 15
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:11 km (6.9 milles) SW of Birmingham Airport, AL (BHM) (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Mobile Municipal Airport, AL (MOB/KMOB), Etats-Unis d'Amérique
Aéroport de destination:Birmingham Airport, AL (BHM/KBHM), Etats-Unis d'Amérique
Numéro de vol: 508
Détails:
The Beechcraft took off from Mobile at 17:05 for the last leg of the New Orleans-Mobile-Birmingham flight. Weather was bad around the Birmingham airport as flight 508 approached. Three aircraft had diverted to another airport, a Piper Aerostar had landed prior to the accident, a Gates LearJet after the accident. The weather reported to the crew at 18:05 was 1100 feet overcast, 2,5 miles visibility, thunderstorm and rainshower wind 340/12 kts.
An upset occurred as the flight entered an area of thunderstorm activity. The aircraft rolled left and pitched up as the aircraft approached level flight with approx. 30deg of left bank. The aircraft then entered a stall (or a prestall buffet) and started to descend. The descent couldn't be arrested and the aircraft crashed into a residential area, destroying two homes and two automobiles.

Probable Cause:

PROBABLE CAUSE: "The decision of the captain to initiate and continue an instrument approach into clearly identified thunderstorm activity, thunderstorm activity, resulting in a loss of control of the airplane from which the flight crew was unable to recover and subsequent collision with obstacles and the terrain."

Accident investigation:

cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 237 days (8 months)
Accident number: NTSB/AAR-92-01
Download report: Final report

Sources:
» CNN
» NTSB Safety Recommendations A-92-18 through -20
» NTSB/AAR-92/01
» Scramble Vol.13, nr.05


Opérations de secours

NTSB issued 3 Safety Recommendations

Show all...

Photos

photo of Beechcraft-C99-N7217L
accident date: 10-07-1991
type: Beechcraft C99
registration: N7217L
 

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 Mobile Municipal Airport, AL et Birmingham Airport, AL est de 346 km (217 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.
languages: languages

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Beech 99

  • 239 built
  • 31ème loss
  • 17ème accident fatal
  • le accident 6ème le plus grave (à ce moment là)
  • le accident 6ème le plus grave (en ce moment)
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