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Safety Recommendation Details

Safety Recommendation A-74-014
Details
Synopsis: ON JULY 23, 1973, AN OZARK AIRLINES FAIRCHILD HILLER FH-227B WAS INVOLVED IN AN ACCIDENT AT ST. LOUIS, MISSOURI. THE NATIONAL TRANSPORTATION SAFETY BOARD'S INVESTIGATION OF THE ACCIDENT REVEALEDTHREE SAFETY ITEMS WHICH WARRANT CORRECTIVE ACTION.
Recommendation: IMPLEMENT, IN COOPERATION WITH THE NATIONAL WEATHER SERVICE, A SYSTEM TO RELAY SEVERE THUNDERSTORM AND TORNADO WARNING BULLETINS EXPEDITIOUSLY TO INBOUND AND OUTBOUND FLIGHTS WHEN SUCH BULLETINS INCLUDE THE TERMINAL AREA.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: St. Louis, MO, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA74AZ003
Accident Reports: Ozark Air Lines, Inc., Fairchild Hiller FH-227B, N4215
Report #: AAR-74-05
Accident Date: 7/23/1973
Issue Date: 4/18/1974
Date Closed: 12/18/1984
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s): Weather, Thunderstorms/Rain/Snow

Safety Recommendation History
From: NTSB
To: FAA
Date: 12/18/1984
Response: Closed--acceptable action.

From: FAA
To: NTSB
Date: 5/24/1984
Response: FAA COMMENT: ENCLOSED FOR THE BOARD'S INFORMATION IS A COPY OF OUR BRIEFING GUIDE FOR CHANGE 7 TO THE FEDERAL AVIATION ADMINISTRATION'S AIR TRAFFIC CONTROL HANDBOOK 7110.65C. THESE CHANGES WHICH WERE EFFECTIVE MARCH 15, 1984, AMONG OTHERS, OUTLINE THE PROCEDURES FOR THE HANDLING OF CWA'S.

From: NTSB
To: FAA
Date: 3/8/1983
Response:

From: FAA
To: NTSB
Date: 10/13/1982
Response: FAA LETTER: IN 1978, IN COOPERATION WITH THE NWS, CENTER WEATHER SERVICE UNITS (CWSU'S) WERE IMPLEMENTED IN ALL OF OUR DOMESTIC AIR ROUTE TRAFFIC CONTROL CENTERS (ARTCC'S) TO IMPROVE THE QUALITY, QUANTITY, AND OPERATIONAL SIGNIFICANCE OF WEATHER INFORMATION AVAILABLE TO THE CENTER. THE CWSU'S RESPONSIBILITIES ARE TO FUNCTION AS A TEAM TO DETECT, SCREEN, AND ENSURE A TIMELY DISSEMINATION OF AVIATION WEATHER INFORMATION IN SUFFICIENT DETAIL TO PERMIT ATC PERSONNEL AND PILOTS TO MAKE APPROPRIATE DECISIONS, WHICH ARE PERTINENT TO FLIGHT SAFETY/OPERATIONS. THROUGH ANALYSIS AND INTERPRETATION OF WEATHER DATA TO DETERMINE ACTUAL WEATHER CONDITIONS, WEATHER SPECIALISTS PROVIDE "NOW CASTING" - A CURRENT DETAILED DESCRIPTION OF EXISTING CONDITIONS - OR DIAGNOSE A GIVEN SITUATION TO ASSIST IN MAKING OPERATIONAL DECISIONS. TERMINAL AIR TRAFFIC CONTROL (ATC) PERSONNEL ARE ADVISED OF CHANGING WEATHER CONDITIONS AND PROVIDED WITH UPDATED FORECASTS. THIS PROGRAM HAS PROVEN TO BE HIGHLY SUCCESSFUL. WE ARE INSTALLING A FASTER COMMUNICATIONS NETWORK TO REPLACE OLDER, SLOWER TELETYPE WRITER. THESE IMPROVEMENTS WILL PROVIDE THE CWSU'S METEOROLOGISTS WITH ADDITIONAL AND MORE TIMELY WEATHER DATA. THE ATC SYSTEM ALSO RECEIVES INFORMATION FROM THE NWS'S SEVERE STORMS FORECAST CENTER IN KANSAS CITY. CONVECTIVE SIGMETS ARE DISTRIBUTED BY THE SEVERE STORMS FORECAST CENTER TO OUR ARTCC'S AND FLIGHT SERVICE STATIONS. THE INFORMATION, IN TURN, IS DISSEMINATED TO AFFECTED TERMINAL FACILITIES BY THE CWSU'S FOR RELAY TO INBOUND AND OUTBOUND FLIGHTS.

From: NTSB
To: FAA
Date: 8/9/1982
Response:

From: NTSB
To: FAA
Date: 6/13/1980
Response:

From: FAA
To: NTSB
Date: 3/28/1980
Response: FAA LETTER: ALTHOUGH WE BELIEVE OUR CURRENT EFFORTS AND IMPROVED PROCEDURES FULFILL THE REQUIREMENTS OF NTSB RECOMMENDATION A-74-14 AND ARE RESPONSIVE TO CURRENT AVIATION WEATHER NEEDS, WE ARE CONTINUING OUR SEARCH FOR BETTER, MORE EFFECTIVE SOLUTIONS TO WEATHER ORIENTED PROBLEMS.

From: NTSB
To: FAA
Date: 1/28/1980
Response:

From: FAA
To: NTSB
Date: 9/11/1979
Response: FAA LETTER: THE RESPONSE QUOTED THE FOLLOWING ACTIONS: (1) SIGMENT ALERT PROCEDURES (HANDBOOK 7110.65A PAR. 41) EFFECTIVE JULY 1, 1979. (2) INFLIGHT WEATHER ADVISORIES (AIM, PAR. 501) EFFECTIVE JULY 1, 1979. (3) CENTER WEATHER SERVICE UNITS (FAA ORDER 7210.38) EFFECTIVE FEBRUARY 23, 1979.

From: NTSB
To: FAA
Date: 3/15/1979
Response:

From: FAA
To: NTSB
Date: 2/15/1979
Response: FAA LTR: NWS METEOROLOGISTS WERE ASSIGNED TO 13 ARTCC'S. THEIR FUNCTION IS TO PROVIDE AIR TRAFFIC PERSONNEL WITH TIMELY WEATHER INTELLIGENCE. IT IS FAA'S INTENT TO PLACE METEOROLOGISTS IN ALL ARTCC'S THROUGHOUT THE COUNTRY.

From: FAA
To: NTSB
Date: 6/10/1977
Response: FAA LTR: A SYSTEM TO RELAY SEVERE THUNDERSTORM AND TORNADO WARNING WAS EXPLORED DURING JUNE THROUGH OCTOBER 1976. THE TEST PROCEDURES REQUIRED THE NATIONAL WEATHER SERVICE WEATHER RADAR OBSERVERS, UPON DETECTING A STRONG WEATHER RETURN, TO NOTIFY THE FAA CENTRAL FLOW CONTROL FACILITY (CFCF) ADVISING THEM OF THE LOCATION, INTENSITY, AND MOVEMENT OF THE STORM. THE CFCF WOULD THEN ALERT THE APPROPRIATE AIR TRAFFIC CONTROL FACILITY. THE RESULTS OF THIS TEST WERE INCONCLUSIVE AND A SIMILAR TEST IS TO BE CONDUCTED DURING JULY AND AUGUST 1977. 4/3/78 FAA/DOT NOTICE N7110.535 ISSUED: THE NOTICE DOES NOT PROVIDE FOR DIRECT DISSEMINATION OF SIGMET INFORMATION TO PILOTS BY AIR TRAFFIC CONTROLLERS.

From: NTSB
To: FAA
Date: 5/19/1977
Response:

From: FAA
To: NTSB
Date: 4/30/1974
Response: FAA LTR: FAA PERSONNEL WILL MEET WITH APPROPRIATE NATIONAL WEATHER SERVICE PERSONNEL AND SEEK TO IMPROVE THE PRESENT SYSTEM OF DISSEMINATION OF SEVERE THUNDERSTORM AND TORNADO BULLETINS.