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Safety Recommendation Details

Safety Recommendation A-71-049
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: REPHRASE THE WORDING CONTAINED IN YOUR ALTITUDE/AIRSPEED LIMITATIONS AND DELINEATE EXPLICITLY THOSE INSTANCES WHEREIN AIRSPEEDS IN EXCESS OF 10,000 FEET/250 KIAS LIMITATIONS ARE AUTHORIZED. THE BOARD BELIEVES THAT THE EXCEPTIONS SHOULD BE LIMITED TO THE FOLLOWING: A. CLIMBS AND DESCENTS TO TRAFFIC PATTERNS, AUTHORIZED AND/OR DESIGNATED TRAINING AREAS AND LOW-LEVEL NAVIGATION ROUTES. B. THOSE INSTANCES WHERE SAFETY OF EITHER CREW OR AIRCRAFT REQUIRE OPERATIONS IN EXCESS OF THE LIMITATION.
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Addressee(s) and Addressee Status: United States Department of Defense (Closed--No Longer Applicable)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: THE USAF BELIEVES THAT THE LANGUAGE CONTAINED IN PRESENTLY EXISTING DIRECTIVES IS SUFFICIENTLY EXPLICIT.