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Safety Recommendation Details

Safety Recommendation A-83-016
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: EMPHASIZE TO PILOTS ON A CONTINUING BASIS THE IMPORTANCE OF MAKING PROMPT REPORTS OF WIND SHEAR IN ACCORDANCE WITH PRESCRIBED REPORTING GUIDELINES, AND ASSURE THAT AIR TRAFFIC CONTROL PERSONNEL TRANSMIT SUCH REPORTS TO PILOTS PROMPTLY.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable 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: 10/1/1985
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s): Air Traffic Control, Low Level Windshear, Weather, Wind

Safety Recommendation History
From: NTSB
To: FAA
Date: 10/1/1985
Response: We are pleased to learn that the FAA's Office of Flight Operations will stress the importance of flightcrews reporting wind shear encounters, and that the Airman's Information Manual (AIM) has been amended to stress the need for pilots to report wind shear encounters to the Air Traffic Service. We note that the FAA's recent film, "Probable Cause," along with Advisory Circular (AC) 00-50A, Low Level Wind Shear, also address the importance of prompt wind shear reporting. This recommendation is classified "Closed--Acceptable Action."

From: FAA
To: NTSB
Date: 4/2/1985
Response: FAA LTR: THE FAA'S OFFICE OF FLIGHT OPERATIONS CONTINUES TO EMPHASIZE THE IMPORTANCE OF COMMUNICATION OF WIND SHEAR ENCOUNTERS BY FLIGHTCREWS. OUR RECENT INFORMATIONAL FILM, "PROBABLE CAUSE," ALONG WITH THE CURRENT ADVISORY CIRCULAR (AC) 00-50A, LOW LEVEL WIND SHEAR, AND THE AIRMAN'S INFORMATION MANUAL, STRESSES THE NEED FOR PILOTS TO REPORT THROUGH AIR TRAFFIC SERVICE ANY WIND SHEAR ENCOUNTER. WE PLAN TO CONTINUE TO EMPHASIZE THE NEED FOR COMMUNICATION IN THE AIRMAN EDUCATION PROGRAM CURRENTLY UNDERWAY, AS WELL AS IN FORTHCOMING PROGRAMS. ENCLOSED FOR THE BOARD'S INFORMATION ARE APPROPRIATE PAGE CHANGES TO THE AIM THAT WERE EFFECTIVE NOVEMBER 24, 1983 (ENCLOSURE 2).

From: NTSB
To: FAA
Date: 5/29/1984
Response: The proposed changes to the AIM and the issuance of Air Traffic Service Bulletin No. 83-2, are responsive to the intent of this recommendation. Pending review and implementation of the changes to the AIM, we will maintain Safety Recommendation A- 83-16 in an "Open--Acceptable Action" status.

From: FAA
To: NTSB
Date: 7/21/1983
Response: FAA LETTER: CURRENTLY, PILOT WEATHER REPORTS ARE GENERALLY ADDRESSED IN THE AIRMAN'S INFORMATION MANUAL PARAGRAPH 520. WIND SHEAR PILOT REPORTS ARE SPECIFICALLY DESCRIBED IN THE AIM, PARAGRAPH 523, AND THE OPERATIONAL ASPECTS OF THE LLWSAS ARE COVERED IN THE AIM, PARAGRAPH 227. WE PROPOSE TO CHANGE THE AIM, PARAGRAPH 520, TO INCLUDE WIND SHEAR AS A REPORTABLE, SIGNIFICANT FLIGHT CONDITION AND URGE PILOTS TO PROMPTLY PROVIDE THE APPROPRIATE AIR TRAFFIC CONTROL FACILITY WITH REPORTS OF WIND SHEAR. WE PROPOSE TO EXPAND THE AIM, PARAGRAPHS 227 AND 523, TO URGE PILOTS TO PROMPTLY REPORT WIND SHEAR ENCOUNTERS TO AN ATC FACILITY. ADEQUATE PROCEDURES AND GUIDELINES EXIST IN FAA HANDBOOKS 7110.65C AND 7210.3F PRESCRIBING THE DISSEMINATION OF PILOT REPORTS. AN ARTICLE ENTITLED "LOW LEVEL WIND SHEAR - ITS CHARACTER ISTICS AND THE CONTROLLER'S RESPONSIBILITY" HAS BEEN PUBLISHED IN AIR TRAFFIC SERVICE (ATS) BULLETIN NUMBER 83-2, DATED JUNE 1983. ANOTHER ARTICLE, "THE CHARACTERISTICS OF MICROBURSTS," WAS ALSO PUBLISHED IN THIS BULLETIN. THE AIM CHANGES ARE ANTICIPATED TO BE EFFECTIVE NOVEMBER 24, 1983. ADVISORY CIRCULAR (AC) 00-50A, "LOW LEVEL WIND SHEAR," ADDRESSES THE SUBJECT OF PILOT REPORTS (PIREPS) WHEN ENCOUNTERING WIND SHEAR CONDITIONS. THE IMPORTANCE OF PROVIDING THIS INFORMATION IS STRESSED AS WELL AS SPECIFIC TERMS OF REFERENCE FOR THE REPORT. PILOTS ARE ENCOURAGED TO REPORT THE WIND SHEAR ON THE ENCOUNTER. BOTH THE AIM AND AC 00-50A ARE DISTRIBUTED WIDELY THROUGHOUT THE AVIATION INDUSTRY.