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Safety Recommendation Details

Safety Recommendation A-84-114
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: DURING A TRANSITION PERIOD FOLLOWING THE FURTHER IMPLEMENTATION OF HAZARDOUS INFLIGHT WEATHER ADVISORY SERVICE, REQUIRE AIR TRAFFIC CONTROLLERS TO ADVISE FLIGHTCREWS WHEN CRITICAL SAFETY INFORMATION IS BEING MADE AVAILABLE THROUGH HIWAS. FOR EXAMPLE, ARTCC CONTROLLERS SHOULD BE REQUIRED TO ADVISE FLIGHTS UPON INITIAL CONTACT "SIGNIFICANT WEATHER INFORMATION AVAILABLE ON HIWAS."
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 finds that FAA Order 7110.92A is fully responsive to the intent of this recommendation. Safety Recommendation A-84-114 has been classified as "Closed- -Acceptable Action."

From: FAA
To: NTSB
Date: 1/17/1986
Response: THE FAA BELIEVES THAT FAA ORDER 7110.92A (HIWAS) ADDRESSES AND IS RESPONSIVE TO THIS RECOMMENDATION.

From: NTSB
To: FAA
Date: 5/14/1985
Response: The intent of this Safety Recommendation was to ensure that during the transition to the HIWAS program, that is, before the actions proposed in FAA's response to Safety Recommendation A-84-111 are effected, flightcrews flight safety information was being presented over HIWAS. The Safety Board anticipated that after HIWAS was fully utilized this requirement would no longer be necessary. Pending further response on this issue, Safety Recommendation A-84-114 has been classified as Open--Unacceptable Action."

From: FAA
To: NTSB
Date: 2/11/1985
Response: FAA LTR: THE OBJECTIVE OF HIWAS IS TO IMPROVE THE AVAIL ABILITY OF HAZARDOUS WEATHER INFORMATION TO PILOTS IN FLIGHT WHILE REDUCING CONTROLLER/SPECIALIST WORK LOAD. CERTAIN CHANGES, AS OUTLINED IN OUR RESPONSE TO A-84-111, HAVE IMPROVED THE OVERALL BROADCAST PROCEDURES. FURTHER, THROUGH MASS DISSEMINATION OF INFORMATION ON THE HIWAS PROGRAM AND PILOT EDUCATION, USERS ARE ANTICIPATED TO HAVE FULL KNOWLEDGE OF THE PROGRAM AND BENEFITS TO BE DERIVED.