Statuts: | Enquête Officielle |
Date: | vendredi 13 août 2004 |
Heure: | 00:49 |
Type/Sous-type: |  Convair CV-580 |
Compagnie: | Air Tahoma |
Immatriculation: | N586P |
Numéro de série: | 68 |
Année de Fabrication: | 1953 |
Heures de vol: | 67886 |
Moteurs: | 2 Allison 501-D13D |
Equipage: | victimes: 1 / à bord: 2 |
Passagers: | victimes: 0 / à bord: 0 |
Total: | victimes: 1 / à bord: 2 |
Dégats de l'appareil: | Perte Totale |
Conséquences: | Written off (damaged beyond repair) |
Lieu de l'accident: | 1 km (0.6 milles) S of Cincinnati/Northern Kentucky Airport, KY (CVG) ( Etats-Unis d'Amérique)
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Phase de vol: | En approche (APR) |
Nature: | Cargo |
Aéroport de départ: | Memphis International Airport, TN (MEM/KMEM), Etats-Unis d'Amérique |
Aéroport de destination: | Cincinnati/Northern Kentucky Airport, KY (CVG/KCVG), Etats-Unis d'Amérique |
Numéro de vol: | 185 |
Détails:The Convair, owned by Air Tahoma, was carrying overnight delivery packages under contract to DHL Worldwide Express. The captain began fuel crossfeed operations about 50 minutes into the flight and allowed it to continue unmonitored for almost 30 minutes. During the crossfeed operations, the fuel tank shutoff valve had been left open. This is contrary to approved procedures and allowed fuel transfer from the left tank to the right tank. During the airplane's descent to
landing, the fuel in the left tank, which was providing fuel to both engines, was exhausted because both engine-driven fuel pumps drew air from the left tank into the fuel system instead of fuel from the right tank, which led to a dual engine flameout caused by fuel starvation. The airplane was approaching runway 36R at Cincinnati/Northern Kentucky Airport but did not make it to the runway. The aircraft crashed on the sixth hole at the World of Sports golf course, just south of the airport and broke up.
Probable Cause:
PROBABLE CAUSE: " The National Transportation Safety Board determines that the probable cause of this accident was fuel starvation resulting from the captain’s decision not to follow approved fuel crossfeed procedures. Contributing to the accident were the captain's inadequate preflight planning, his subsequent distraction during the flight, and his late initiation of the in-range checklist. Further contributing to the accident was the flight crew’s failure to monitor the fuel gauges and to recognize that the airplane’s changing handling characteristics were caused by a fuel imbalance."
Accident investigation:
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Investigating agency: | NTSB  |
Status: | Investigation completed |
Duration: | 1 year and 9 months | Accident number: | NTSB AAR-06-03 | Download report: | Final report
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Sources:
» NTSB
Opérations de secours
NTSB issued 3 Safety Recommendations
Issued: 17-MAY-2006 | To: FAA | A-06-39 |
Issue a flight standards illformation bulletin to all principal operations inspectors of Convair 580 operators that familiarizes operators with the circumstances of the Air Tahoma flight 185 accident, including the iinportancc of closing the fuel tank shutoff valve for the tank not being used during fuel crossfeed operations. (Closed - Acceptable Action) |
Issued: 17-MAY-2006 | To: FAA | A-06-40 |
Require Convair 580 operators to set the left and right fuel boost pump output pressure settings on their airplanes to the same setting. (Closed - Acceptable Alternate Action) |
Issued: 17-MAY-2006 | To: Transport Canada | A-06-41 |
Require Convair 580 operators to set the left and right fuel boost pump output pressure settings on their airplanes to the same setting. (Closed - Acceptable Alternate Action) |
Show all AD's and Safety Recommendations
Photos

EC-HMR was sold to Air Tahoma in 2004, continuing flying packages for DHL in the U.S.
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 Memphis International Airport, TN et Cincinnati/Northern Kentucky Airport, KY est de 644 km (402 miles).
Accident location: Exact; deduced from 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.