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Safety Recommendation Details

Safety Recommendation A-71-048
Details
Synopsis: THE NATIONAL TRANSPORTATION SAFETY BOARD RECENTLY CONCLUDED A PUBLIC HEARING TO DOCUMENT CERTAIN FACTS SURROUNDING THE MIDAIR COLLISION BETWEEN A HUGHES AIR WEST DC-9 AND A UNITED STATES MARINE CORPS (USMC) F-4B JET FIGHTED, WHICH OCCURRED NEAR DUARTE, CALIFORNIA, ON JUNE 6, 1971. OUR INVESTIGATION HAS NOT BEEN COMPLETED; THEREFORE, NO DETERMINATION HAS BEEN MADE AS TO THE PROBABLE CAUSE(S) OF THE ACCIDENT.
Recommendation: REVIEW THE FEASIBILITY OF RESTRICTING ALL TYPES OF LOW LEVEL TRAINING, WHICH REQUIRES AIRSPEEDS IN EXCESS OF THE FAR LIMITATIONS, TO DESIGNATED RESTRICTED AREAS AND LOW-LEVEL NAVIGATION ROUTES.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Duarte, CA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA71A0010
Accident Reports: Hughes Airwest DC-9, N9345, and U.S. Marine Corps F-4B, 151458
Report #: AAR-72-26
Accident Date: 6/6/1971
Issue Date: 10/15/1971
Date Closed: 8/21/1972
Addressee(s) and Addressee Status: United States Department of Defense (Closed--No Longer Applicable)
Keyword(s):

Safety Recommendation History
From: United States Department of Defense
To: NTSB
Date: 12/2/1971
Response: (1) THE USAF STATED THAT THERE WAS INSUFFICIENT RESTRICTED AIRSPACE TO SUPPORT ALL USAF TRAINING OPERATIONS THAT HAVE BEEN AUTHORIZED TO EXCEED FAR AIR SPEED LIMITATIONS. THEY FELT THAT HIGHER PENALTIES OF SAFETY WOULD BE PAID THROUGH MARGINAL MANEUVERING, INCREASED EXPOSURE TIME, AND THERE WOULD BE AN INABILITY TO TRAIN CREWS TO A READINESS SKILL LEVEL FOR COMBAT OPERATIONS. THEY WILL CONTINUE THEIR EFFORTS AND SUPPORT FOR A SURVEILLANCE ENVIRONMENT THAT WILL ENSURE THE SEPARATION OF BOTH IFR AND VFR TRAFFIC. THE USAF WILL CONTINUE TO REQUIRE THE LARGEST PRACTICAL NUMBER OF SORTIES COMMENSURATE WITH MISSION REQUIREMENTS TO OPERATE IFR IN THE EXISTING ATC SYSTEM.