|Title:||Midair collision, Hughes Air West DC-9, N9345, and U. S. Marine Corps F-4B, 151458 Near Duarte, California, June 6, 1971|
|Micro summary:||A midair collision between a DC-9 and F-4 results in the destruction of both airplanes.|
|Event Time:||1971-06-06 at 1811 PDT|
|Publishing Agency:||National Transportation Safety Board (NTSB)|
|Site of event:||Climb (Hughes); En Route (Marine) 15,150 feet Near Duarte, CA|
|First Airplane||Second Airplane|
|Departure:||Los Angeles International Airport, Los Angeles, California, USA||Fallon Naval Air Station, Fallon, Nevada, USA|
|Destination:||Seattle-Tacoma International Airport, Seattle, Washington, USA||El Toro Marine Corps Air Station, Santa Ana, California, USA|
|Airplane Type(s):||Douglas DC-9||McDonnell Dougas F-4B|
|Operator(s):||Hughes Air West||United States Marine Corps|
|Type of flight:||Revenue||Military|
|Executive Summary:||The Huqhes Air West DC-9 was under radar control of the Los Angeles Air Route Traffic Control Center, climbing to Fliqht Level 330. The F-4B was being flown at approximately 15,500 feet, in accordance with Visual Flight Rules, en route to the Marine Corps Air Station, El Toro, California. The collision occurred at an altitude of approximately 15,150 feet.|
The visibility in the area, at the time of the accident, was qood and there were no clouds between the two aircraft during the final minutes of fliqht.
The National Transportation Safety Board determines that the probable cause of this accident was the failure of both crews to see and avoid each other but recognizes that they had only marginal capability to detect, assess, and avoid the collision. Other causal factors include a very high closure rate, comingling of IFR and VFR traffic in an area where the limitation of the ATC system precludes effective separation of such traffic , and failure of the crew of BuNo458 to request radar advisory service, particularly considering the fact that they had an inoperable transponder.
As a result of this accident the Safety Board recommends that the Federal Aviation Administration: (1) install video tape on all radar displays and "area" microphones in air traffic control facilities; (2) provide positive control airspace from takeoff to landing for all IFR traffic; and (3) insure that all radar facilities are capable of receiving Code 7700, and establish definitive procedures for the handling of such traffic.
The Safety Board also recommended that the Federal Aviation Administration and the Department of Defense cooperatively develop a program to inform all airspace users of the heaviest traffic areas. In addition, it was recommended that the Department of Defense: (1) restrict hiqh-speed, low-level operations to designated areas and routes: (2) delineate explicit circumstances where the 10,000 feet/250 knots limitation may be exceeded; (3) consider usinq air intercept radar for collision avoidance purposes: and (4) publicize the availability of the FAA Radar Advisory Service and consider making the use of this service mandatory.
|Learning Keywords:||Operations - Airspace - Air Traffic Control|
|Operations - Airspace - Mid-Air Collision|
|Operations - Airspace - See & avoid|
|Consequence - Hull Loss|
|Close match:||Midair collision, Accident occurring July 1, 2002 involving a Boeing 757-200 and Tupolev Tu-154M|
|Midair collision, Accident Investigation Report, Trans World Airlines Lockheed 1049A N6902C and United Air Lines Douglas DC-7 N6324C, over the Grand Canyon, Arizona, June 30, 1956|
|Midair Collision of Aeronaves De Mexico, S.A., McDonnell Douglas DC-9-32, XA-JED, and Piper PA-28-181, N4891F, Cerritos, California, August 31, 1986|
|Midair Collision, United States Air Force, F111-D, Building Contractors Inc., Cessna TU-206G, Clovis, New Mexico, February 6, 1980|
|Midair collision, Ozark Air Lines, Inc., DC-9, N970Z And Interstate Airmotive, Inc., Cessna 150F, N8669G, St. Louis, Missouri, March 27, 1968|
|Midair collision, American Airlines, Inc., Boeing 707-323, N7595A, and a Linden Flight Service, Inc., Cessna 150, N60942, Over Edison, New Jersey, January 9, 1971|
|Midair collision, Pacific Southwest Airlines, Inc., Boeing 727-214, N533PS, Flight 182, Gibbs Flite Center, Inc., Cessna 172, N7711G, San Diego, California, September 25, 1978|
|Midair collision, Eastern Air Lines, Incorporated, McDonnel Douglas DC-9-31, N8943E, and a Cessna Model 206, N2110F, Raleigh-Durham Airport, Raleigh, North Carolina, December 4, 1971|
|Midair collision, North Central Airlines, Inc., Allison Convair 340/440, (CV-580) N90858, And Air Wisconsin Incorporated, DHC-6, N4043B, near Appleton, Wisconsin, June 29, 1972|
|Midair Collision, Piedmont Airlines Division Boeing 727, N68650 and Lanseair Inc. Cessna 310, N3121S, at Hendersonville, North Caroline, July 19, 1967|
Accident Reports on DVD, Copyright © 2006 by Flight Simulation Systems, LLC. All Rights Reserved. All referenced trademarks are the property of their respective owners.www.fss.aero