Narrative: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 takeoff 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: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."
Loss of control
» Airport Operations Vol.19, No.6 (Nov/Dec 1993) / Flight Safety Foundation
» ICAO Adrep 2/93 (#45)
» ICAO Adrep 4/94 (#99)
Official accident investigation report
Follow-up / safety actions
Purolator Courier bought this DC-9 in June 1984. Purolator merged into Emery Worldwide in September 1987.
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Cleveland-Hopkins International Airport, OH to Indianapolis International Airport, IN as the crow flies is 417 km (261 miles).