Crash-aerien 28 OCT 1973 d'un Boeing 737-222 N751N - Greensboro/High Point Airport, NC (GSO)
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Statuts:Accident investigation report completed and information captured
Date:dimanche 28 octobre 1973
Type/Sous-type:Silhouette image of generic B732 model; specific model in this crash may look slightly different
Boeing 737-222
Compagnie:Piedmont Airlines
Immatriculation: N751N
Numéro de série: 19548/114
Année de Fabrication: 1968-12-22 (4 years 10 months)
Heures de vol:9046
Moteurs: 2 Pratt & Whitney JT8D-7A
Equipage:victimes: 0 / à bord: 4
Passagers:victimes: 0 / à bord: 92
Total:victimes: 0 / à bord: 96
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Greensboro/High Point Airport, NC (GSO) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Charlotte-Douglas Airport, NC (CLT/KCLT), Etats-Unis d'Amérique
Aéroport de destination:Greensboro/High Point Airport, NC (GSO/KGSO), Etats-Unis d'Amérique
Numéro de vol: 20
Piedmont Airlines Flight 20, a Boeing 737-200, ran off the end of runway 14 after landing at the Greensboro-High Point Airport, North Carolina. There were 92 passengers and 4 crewmembers aboard; 4 passengers and 1 flight attendant were injured slightly.
Flight 20 made an ILS approach to runway 14 and touched down at a faster-than-normal airspeed 2,600 feet beyond the approach end of the runway, during heavy rain showers. The aircraft ran off the end of the runway, and the three landing gears collapsed as the aircraft crossed a service road, 640 feet beyond the runway.

Probable Cause:

Probable Cause: "The probable cause of this accident was ineffective braking action caused by dynamic hydroplaning on a rain-flooded runway. Additional factors which contributed to the accident were: (1) An unstabilized downwind approach; (2) a relatively long, fast touchdown on a downsloping runway; (3) delayed deployment of the automatic spoilers; and, (4) failure of the crew to deploy the spoilers manually."

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 206 days (7 months)
Accident number: NTSB-AAR-74-7
Download report: Final report

Opérations de secours

NTSB issued 7 Safety Recommendations

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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 Charlotte-Douglas Airport, NC et Greensboro/High Point Airport, NC est de 133 km (83 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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