Event Details

Title:Near-miss in cruise, Near Midair Collision, American Airlines, Inc., Douglas DC10, N124, and Trans-World Airlines, Inc., Lockheed-1011, N11002, Near Carleton, Michigan, November 26, 1975
Micro summary:Near-miss at FL350 involving this American Airlines DC-10 and Lockheed L-1011, avoided by an evasive maneuver by the DC-10.
Event Time:1975-11-26 at 1923:11 EST
File Name:1975-11-26-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:NTSB-AAR-76-03
Site of event:Cruise, 35000', 23 nm W of Carleton, MI
Latitude/Longitude:N4202'32"; 08358'00"W
First AirplaneSecond Airplane
Departure:Chicago O'Hare International Airport, Chicago, Illinois, USAPhiladelphia International Airport, Philadelphia, Pensylvania, USA
Destination:Newark Liberty International Airport, Newark, New Jersey, USALos Angeles International Airport, Los Angeles, California, USA
Airplane Type(s):McDonnell Douglas DC-10Lockheed L-1011
Flight Phase:CruiseCruise
Operator(s):American AirlinesTrans World Airlines
Type of flight:RevenueRevenue
Serious Injuries:
Other Injuries:
Executive Summary:On November 26, 1975, American Airlines Douglas DC-10 and a Trans World Airlines Lockheed-1011 almost collided head-on at 35,000 feet near Carleton, Michigan. Both aircraft were operating in instrument meteorological conditions, within positive control airspace, and while under the control of the Cleveland Air Route Traffic Control Center. As a result of the evasive maneuver that had to be executed by the captain of the DC-10, 3 aircraft occupants were injured seriously and 21 were injured slightly. The cabin's interior was damaged extensively. None of the occupants of the L-1011 was injured.

The National Transportation Safety Board determines that the probable cause of this near-collision was the failure of the radar controller to apply prescribed separation criteria when he first became aware of a potential traffic conflict which necessitated an abrupt collision avoidance maneuver.. He also allowed secondary duties to interfere with the timely detection of the impending traffic conflict when it was displayed clearly on his radarscope. Contributing to the accident was an incomplete sector briefing during the change of controller personnel~about 1 minute before the accident.
Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control


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