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Safety Recommendation Details

Safety Recommendation A-84-111
Details
Synopsis: ON NOVEMBER 24, 1983, AIR CANADA FLIGHT 965, A LOCKHEED L-1011, C-FTNJ, WITH 154 PASSENGERS AND 15 CREWMEMBERS ON BOARD, ENCOUNTERED SEVERE CLEAR AIR TURBULENCE ABOUT 105 MILES OFF THE COAST OF CHARLESTON, SOUTH CAROLINA, WHILE EN ROUTE TO TORONTO, CANADA, FROM PORT OF SPAIN, TRINIDAD. ONE FLIGHT ATTENDANT AND THREE PASSENGERS WERE SERIOUSLY INJURED DURING THE ENCOUNTER. TWO PHYSICIANS ABOARD THE FLIGHT PROVIDED IMMEDIATE MEDICAL ATTENTION TO THE INJURED. THE FLIGHT CONTINUED TO ITS DESTINATION AND LANDED WITHOUT FURTHER INCIDENT ABOUT 1 1/2 HOURS AFTER THE ACCIDENT. MEDICAL ASSISTANCE WAS ON HAND TO PROVIDE TREATMENT WHEN THE FLIGHT ARRIVED AT THE GATE. AT THE TIME OF THE TURBULENCE ENCOUNTER, THE FLIGHT WAS UNDER THE CONTROL OF THE JACKSONVILLE AIR ROUTE TRAFFIC CONTROL CENTER (ARTCC) METTA SECTOR, AND A CONVECTIVE SIGMET WAS IN EFFECT FOR A LARGE PORTION OF THE METTA SECTOR. THE METTA CONTROLLER HAD BEEN RELIEVED OF THE RESPONSIBILITY OF BROADCASTING SIGMETS UNDER THE TERMS OF THE FEDERAL AVIATION ADMINISTRATION'S HAZARDOUS INFLIGHT WEATHER ADVISORY SERVICE (HIWAS). THE FLIGHT CREW WAS NOT AWARE OF THE SIGMET.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATOR: POSTPONE NATIONWIDE IMPLEMENTATION OF THE HAZARDOUS INFLIGHT WEATHER ADVISORY SERVICE PROGRAM AT AIR TRAFFIC CONTROL CENTERS UNTIL THE BROADCASTING PROCEDURES ARE IMPROVED AND PROGRAM INFORMATION IS DISSEMINATED WIDELY.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: CHARLESTON, SC, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA84AA008
Accident Reports: Air Canada Flight 965, Lockheed L-1011, C-FTNJ
Report #: AAR-84-13
Accident Date: 11/24/1983
Issue Date: 10/25/1984
Date Closed: 12/18/1986
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s): Air Traffic Control, Weather, Weather Equipment/Products/Reports

Safety Recommendation History
From: NTSB
To: FAA
Date: 12/18/1986
Response: The Safety Board is pleased to learn that the FAA issued Order 7110.92A to provide guidance in advertising the Hazardous Inflight Weather Advisory Service (HIWAS). The Safety Board believes that given the FAA's efforts to improve the dissemination of information on the HIWAS program, and in consideration of the amount of time that has passed, there is no longer any need to postpone implementation of the HIWAS program. Safety Recommendation A-84-111 has been classified as "Closed--Acceptable Action."

From: FAA
To: NTSB
Date: 1/17/1986
Response: FAA'S ORDER 7110.92A, DATED 4/15/85, UPDATES THE HIWAS PROGRAM AND PROVIDES GUIDANCE AND PROCEDURES FOR CONTINUED IMPLEMENTATION. THIS ORDER DIRECTS FAA REGIONS AND WASHINGTON HEADQUARTERS TO ADVERTISE THE PROGRAM NATIONALLY, REGIONALLY, AND LOCALLY. THEREFORE, BASED ON THESE ACCOMPLISHMENTS AND IMPROVEMENTS, MY POSITION IS TO MOVE AHEAD WITH THE CONTINUATION OF THE HIWAS PROGRAM.

From: NTSB
To: FAA
Date: 5/14/1985
Response: The Safety Board believes that all of the actions proposed by the FAA to improve Hazardous Inflight Weather Advisory Service (HIWAS) program broadcasting procedures and to disseminate information on the program will help improve HIWAS usage. However, the Safety Board remains convinced that the results of these actions should be thoroughly monitored before nationwide implementation of the program commences. Since the FAA's actions have the potential for complying with the Safety Board's intent, Safety Recommendation A-84-111 has been classified as "Open--Acceptable Action," pending the Safety Board's review of the results of these actions in improving the utility of HIWAS.

From: FAA
To: NTSB
Date: 2/11/1985
Response: FAA LTR: THE FAA RESPONSE STATES THAT BROADCASTING OF HIWAS HAS BEEN IMPROVED AND A HIWAS INFORMATION DISSEMINATION PLAN PUT INTO EFFECT.