Accident McDonnell Douglas DC-9-15RC N565PC, Sunday 17 February 1991
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Date:Sunday 17 February 1991
Type:Silhouette image of generic DC91 model; specific model in this crash may look slightly different    
McDonnell Douglas DC-9-15RC
Owner/operator:Ryan International Airlines
Registration: N565PC
MSN: 47240/346
Year of manufacture:1968
Engine model:Pratt & Whitney JT8D-7B
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Destroyed, written off
Location:Cleveland-Hopkins International Airport, OH (CLE) -   United States of America
Phase: Take off
Departure airport:Cleveland-Hopkins International Airport, OH (CLE/KCLE)
Destination airport:Indianapolis International Airport, IN (IND/KIND)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
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: "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."

Accident investigation:
Investigating agency: NTSB
Report number: NTSB/AAR-91-09
Status: Investigation completed
Duration: 9 months
Download report: Final report


Airport Operations Vol.19, No.6 (Nov/Dec 1993) / Flight Safety Foundation
ICAO Adrep 2/93 (#45)
ICAO Adrep 4/94 (#99)



photo (c) Carl Waldenmaier, via Werner Fischdick; San Francisco-International Airport, CA (SFO); October 1975

Revision history:


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