Summary
On December 25, 1994, a Douglas DC-8-54F (N427FB) was involved in an incident near New York, NY. All 5 people aboard were uninjured. The aircraft sustained minor damage.
The National Transportation Safety Board determined the probable cause of this incident to be: THE FAILURE OF THE RIGHT MAIN LANDING GEAR'S SHOCK STRUT PISTON LUG DUE TO STRESS CORROSION.
On December 25, 1994, at 0200 eastern standard time, a DC-8-54F, N427FB, had its right main landing gear shock strut fail during the takeoff roll on runway 31L at the John F. Kennedy International Airport, New York City, New York. The three crew members and two passengers were not injured. Visual meteorological conditions prevailed. The scheduled cargo flight was conducted under 14 CFR Part 121.
According to the Captain, during the takeoff roll he noticed the airplane shaking. He stated he aborted the takeoff and turned the airplane onto taxiway KK and stopped it at the hold-short line.
This incident is documented in NTSB report BFO95IA023. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N427FB.
Accident Details
Probable Cause and Findings
THE FAILURE OF THE RIGHT MAIN LANDING GEAR'S SHOCK STRUT PISTON LUG DUE TO STRESS CORROSION.
Aircraft Information
Registered Owner (Historical)
Analysis
On December 25, 1994, at 0200 eastern standard time, a DC-8-54F, N427FB, had its right main landing gear shock strut fail during the takeoff roll on runway 31L at the John F. Kennedy International Airport, New York City, New York. The three crew members and two passengers were not injured. Visual meteorological conditions prevailed. The scheduled cargo flight was conducted under 14 CFR Part 121.
According to the Captain, during the takeoff roll he noticed the airplane shaking. He stated he aborted the takeoff and turned the airplane onto taxiway KK and stopped it at the hold-short line. He stated he tried to taxi the airplane from the hold-short line but it would not move.
On scene examination of the airplane's right main landing gear revealed the gear had separated near its torque links. The two outboard tires were deflated and the two inboard tires remained inflated.
The failed landing gear was returned to the airplane manufacturer for examination. The examination revealed that the airplane's piston lug on the shock strut had failed. The manufacturer's Examination Report stated, "The failure of subject piston was attributed to stress corrosion cracking. The primary origin area occurred along the inner radius of the forward torque link attach lug. The slow growth crack propagation exhibited a predominant inter-granular (I.G.) mode of rupture with associated corrosion attack of the I.G. facets decreasing with increasing crack depth. At the crack depth of 0.06 inch the crack transitions into a dimple mode of rupture indicative of overload. The overload portion joined with two additional fractures resulting in complete separation of the part."
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# BFO95IA023