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Safety Recommendation Details

Safety Recommendation A-83-014
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: MAKE APPROPRIATE DISTRIBUTION TO THE AVIATION COMUNITY OF INFORMATION REGARDING (1) THE LOCATION AND DESIGNATION OF REMOTE SENSORS OF THE LOW LEVEL WIND SHEAR ALERT SYSTEM (LLWSAS) AT EQUIPPED AIRPORTS, (2) THE CAPABILITIES AND LIMITATIONS OF THE LLWSAS, AND (3) THE AVAILABILITY OF CURRENT LLWSAS REMOTE SENSOR INFORMATION IF REQUESTED FROM TOWER CONTROLLERS.
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): Low Level Windshear, Weather, Wind

Safety Recommendation History
From: NTSB
To: FAA
Date: 10/1/1985
Response: The Safety Board notes the FAA action to issue: a letter to airmen on the Low Level Windshear Alert System (LLWAS); an amendment to FAA Handbook 7210.3 requiring a letter to airmen be reissued at the end of 24 months; a requirement for an indication in the Airport/Facility Directory of whether or not a facility is equipped with LLWAS; and for taking the ongoing notification to the Jeppesen Company to establish and maintain a LLWAS location data base. Based on these actions, this recommendation is classified as "Closed--Acceptable Action."

From: FAA
To: NTSB
Date: 4/2/1985
Response: FAA LTR: THE FEDERAL AVIATION ADMINISTRATION (FAA) PUBLISHED A LETTER TO AIRMEN THAT WAS DATED AND EFFECTIVE NOVEMBER 24, 1983, EXPLAINING THE LOW LEVEL WIND SHEAR ALERT SYSTEM (LLWAS) (ENCLOSURE 1). FAA HANDBOK 7210.3 REQUIRES A LETTER TO AIRMEN TO BE REISSUED AT THE END OF 24 MONTHS IF THE INFORMATION CONTAINED WITHIN IT NEEDS CONTINUED EXPOSURE. IN ADDITION, WE ARE INDICATING IN THE AIRPORT/FACILITY DIRECTORY WHETHER OR NOT A FACILITY IS EQUIPPED WITH LLWAS. WE FURTHER NOTE THAT TWO MAJOR AIR CARRIERS THAT ARE SUBSCRIBERS TO JEPPESEN INSTRUMENT APPROACH PROCEDURE CHARTS HAVE REQUESTED THE JEPPESEN COMPANY TO PROVIDE LLWAS SENSOR LOCATIONS ON THE AIRPORT DIAGRAM OF ITS INSTRUMENT APPROACH PROCEDURE CHARTS. IN TURN, THE JEPPESEN COMPANY HAS REQUESTED THE FAA TO PROVIDE AN LLWAS LOCATION DATABASE SO THAT IT CAN MEET ITS CUSTOMERS' NEEDS. THE FAA IS TAKING ACTION TO ESTABLISH SUCH A DATA BASE.

From: NTSB
To: FAA
Date: 5/29/1984
Response: Amending FAA Handbook 7210.3F to require the issuance of a Letter to Airmen by all LLWAS facilities is responsive to the objectives of this recommendation. However, we are concerned that the Letter to Airmen may not represent the best means of disseminating this information to the aviation community on a continuing basis. We suggest that the FAA consider publishing information on the capabilities and limitations of the LLWAS and the availability of remote sensor information in the Airman's Information Manual (AIM). In addition, information regarding the location and designation of remote sensors could be published in the Airport/Facility Directory or noted on the airport diagram in the published Instrument Approach Procedures. Pending the amendment of FAA Handbook 7210.3F and our review of the sample letter to regions, Safety Recommendation A-83-14 will be maintained in an "Open--Acceptable Action" status.

From: FAA
To: NTSB
Date: 7/21/1983
Response: FAA LETTER: WE PROPOSE TO AMEND FAA HANDBOOK 7210.3F, PARAGRAPH 1222, TO REQUIRE ISSUANCE OF A LETTER TO AIRMEN BY ALL LLWSAS FACILITIES. AS A MINIMUM, THE LETTER WILL CONTAIN THE LOCATION AND DESIGNATION OF THE REMOTE SENSORS, THE CAPABILITIES AND LIMITATIONS OF THE LLWSAS, AND THE AVAILABILITY OF CURRENT LLWSAS REMOTE SENSOR INFORMATION.