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Safety Recommendation Details

Safety Recommendation A-74-050
Details
Synopsis: ON APRIL 29, 1972, LOS ANGELES INTERNATIONAL AIRPORT (LAX) INSTITUTED A PREFERENTIAL RUNWAY-USE PLAN, WHICH PROHIBITS MOST AIRCRAFT OPERATIONS EAST OF THE AIRPORT FROM 11:00 P.M. TO 6:00 A.M.DAILY.
Recommendation: PROVIDE ADDITIONAL WEATHER ADVISORIES AND REQUIRE ADDITIONAL WEATHER OBSERVATIONS WHENEVER ATMOSPHERIC CONDITIONS ARE CONDUCIVE TO FOG FORMATION OR WHENEVER NONHOMOGENEOUS FOG CONDITIONS ARE PRESENT OVER THE WESTERN APPROACHES.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Alternate Action
Mode: Aviation
Location: Los Angeles, CA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: LAX74AL053
Accident Reports: Trans World Airlines, Inc., Boeing 707-131B, N757TW
Report #: AAR-74-10
Accident Date: 1/16/1974
Issue Date: 5/10/1974
Date Closed: 8/9/1974
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Alternate Action)
Keyword(s): Fog, Weather

Safety Recommendation History
From: NTSB
To: FAA
Date: 8/9/1974
Response: Closed--acceptable alternate action.

From: FAA
To: NTSB
Date: 6/28/1974
Response: A ROTATING BEAM CEILOMETER WAS COMMISSIONED ON THE SAND DUNES WEST OF THE AIRPORT NOVEMBER 9, 1973. A WIND VELOCITY INDICATOR ON THE SAND DUNES WILL BE COMMISSIONED BY THE END OF CY-1974. A METHOD TO MEASURE SLANT RANGE VISIBILITY IN THE AREA OF THE SAND DUNES USING AN EXPERIMENTAL INSTRUMENT, "FORWARD SCATTER VISIBILITY METER' IS BEING EXPLORED.