Accident
Last updated: 31 October 2014
Statuts:Enquête Officielle
Date:dimanche 17 février 1991
Heure:00:19
Type/Sous-type:Silhouette image of generic DC91 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-15RC
Compagnie:Ryan International Airlines
Immatriculation: N565PC
Numéro de série: 47240/346
Année de Fabrication: 1968
Moteurs: 2 Pratt & Whitney JT8D-7B
Equipage:victimes: 2 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 2 / à bord: 2
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Cleveland-Hopkins International Airport, OH (CLE) (   Etats-Unis d'Amérique) show on map
Élévation des lieux de l'accident: 241 m (791 feet) amsl
Phase de vol: Au décollage (TOF)
Nature:Cargo
Aéroport de départ:Cleveland-Hopkins International Airport, OH (CLE/KCLE), Etats-Unis d'Amérique
Aéroport de destination:Indianapolis International Airport, IN (IND/KIND), Etats-Unis d'Amérique
Numéro de vol: 590
Détails:
Ryan Flight 590 landed at Cleveland at 23:44 and taxied to the mail ramp. Snow (dry and blowing) fell throughout the 35 minutes that the DC-9 was on the ground. The de-icing service was not requested during this period. Clearance to taxi to runway 23 was received at 00:09. Takeoff clearance was given at 00:18.
The aircraft stalled during take-off and rolled 90° at 50-100 feet. The airplane then suffered compressor stalls, the left wing contacted the runway and the aircraft cart wheeled. The DC-9 came to rest inverted 6500 feet from the threshold.


PROBABLE CAUSE: "The failure of the flight crew to detect and remove ice contamination on the airplane's wings, which was largely a result of a lack of appropriate response by the Federal Aviation Administration, Douglas Aircraft Company, and Ryan International Airlines to the known effect that a minute amount of contamination has on the stall characteristics of the DC-9 series 10 airplane. The ice contamination led to wing stall and loss of control during the attempted takeoff."

Sources:
» Airport Operations Vol.19, No.6 (Nov/Dec 1993) / Flight Safety Foundation
» ICAO Adrep 2/93 (#45)
» ICAO Adrep 4/94 (#99)
» NTSB/AAR-91/09

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB/AAR-91-09
report released:16-NOV-1991
duration of investigation:272 days (9.1 months)
download report: Ryan intl Airlines DC-9-15, N565PC Loss of Control on Takeoff Cleveland-Hopkins intl Airport Cleveland, OH February 17, 1991. (NTSB/AAR-91-09)
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Opérations de secours

NTSB issued 6 Safety Recommendations

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Photos

photo of McDonnell Douglas DC-9-15RC N9351
Purolator Courier bought this DC-9 in June 1984. Purolator merged into Emery Worldwide in September 1987.
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Cleveland-Hopkins International Airport, OH et Indianapolis International Airport, IN est de 417 km (261 miles).

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