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Safety Recommendation Details

Safety Recommendation A-83-013
Details
Synopsis: ON JULY 9, 1982, PAN AMERICAN WORLD AIRWAYS FLIGHT 759 CRASHED AFTER TAKING OFF FROM RUNWAY 10 AT NEW ORLEANS INTERNATIONAL AIRPORT, KENNER, LOUISIANA. WHEN FLIGHT 759 TOOK OFF, THERE WERE ISOLATED HEAVY SHOWERS OVER THE AIRPORT AND TO THE EAST OF THE AIRPORT ALONG THE AIRPLANE'S INTENDED DEPARTURE PATH. LOW LEVEL WIND SHEAR CONDITIONS HAD BEEN DETECTED BY THE AIRPORT'S LOW LEVEL WIND SHEAR ALERT SYSTEM (LLWSAS), AND THE SYSTEM HAD ALARMED SEVERAL TIMES, THE LAST TIME ABOUT 4 MINUTES BEFORE FLIGHT 759'S TAKEOFF. THE SYSTEM WAS NOT ALARMING AT THE TIME THE TAKEOFF CLEARANCE WAS ISSUED; HOWEVER, A WIND SHEAR ADVISORY WAS BROADCAST 2 SECONDS AFTER THE ACCIDENT.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: REVIEW ALL LOW LEVEL WIND SHEAR ALERT SYSTEM INSTALLATIONS TO IDENTIFY POSSIBLE DEFICIENCIES IN COVERAGE SIMILAR TO THE ONE RESULTING FROM THE INOPERABLE WEST SENSOR AT NEW ORLEANS INTERNATIONAL AIRPORT AND CORRECT SUCH DEFICIENCIES WITHOUT DELAY.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Alternate Action
Mode: Aviation
Location: Kenner, LA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA82AA028
Accident Reports: Pan American World Airways, Inc., Clipper 759, Boeing 727-235, N4737
Report #: AAR-83-02
Accident Date: 7/9/1982
Issue Date: 3/25/1983
Date Closed: 5/29/1984
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Alternate Action)
Keyword(s): Low Level Windshear, Weather, Wind

Safety Recommendation History
From: NTSB
To: FAA
Date: 5/29/1984
Response: Placing the Low Level Wind Shear Alert System (LLWAS) on the National Airspace Performance Reporting System list should eliminate the possibility of LLWAS coverage gaps as occurred at Kenner. The Board accepts this as an alternate to performing a one-time review of system installations. Safety Recommendation A-83-13 will be classified as "Closed--Acceptable Alternate Action."

From: FAA
To: NTSB
Date: 7/21/1983
Response: FAA LETTER: THE FAA HAS PLACED THE LOW LEVEL WIND SHEAR ALERT SYSTEM (LLWSAS) ON THE NATIONAL AIRSPACE PERFORMANCE REPORTING SYSTEM LIST WHICH MEANS THAT ALL DEFICIENCIES MUST BE REPORTED AND REPAIRS ACCOMPLISHED ON A PRIORITY BASIS. THE WEST SENSOR AT NEW ORLEANS INTERNATIONAL AIRPORT IS BEING REPLACED WITH A RUGGEDIZED SENSOR WITH NO MOVING PARTS WHICH SHOULD REDUCE ITS VULNERABILITY TO VANDALISM.