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Safety Recommendation Details

Safety Recommendation A-86-070
Details
Synopsis: ON AUGUST 2, 1985, AT 1805:52 CENTRAL DAYLIGHT TIME, DELTA AIR LINES (DELTA) FLIGHT 191, A LOCKHEED L-1011-385-1, N726DA, CRASHED WHILE APPROACHING TO LAND ON RUNWAY 17L AT THE DALLAS/FORT WORTH INTERNATIONAL (DFW) AIRPORT, TEXAS. WHILE PASSING THROUGH THE RAIN SHAFT BENEATH A THUNDERSTORM, FLIGHT 191 ENTERED A MICROBURST WHICH THE PILOT WAS UNABLE TO TRAVERSE SUCCESSFULLY. THE AIRPLANE STRUCK THE GROUND ABOUT 6,300 FEET NORTH OF THE APPROACH END OF RUNWAY 17L, HIT A CAR ON A HIGHWAY NORTH OF THE RUNWAY KILLING THE DRIVER, STRUCK TWO WATER TANKS ON THE AIRPORT, AND BROKE APART. EXCEPT FOR A SECTION OF THE AIRPLANE CONTAINING THE AFT FUSELAGE AND EMPENNAGE, THE REMAINDER OF THE AIRPLANE DISINTEGRATED DURING THE IMPACT SEQUENCE, AND A SEVERE FIRE ERUPTED DURING THE IMPACT SEQUENCE. OF THE 163 PERSONS ABOARD, 134 PASSENGERS AND CREWMEMBERS WERE KILLED; 26 PASSENGERS AND 3 CABIN ATTENDANTS SURVIVED.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: REQUIRE TOWER CONTROLLERS TO ISSUE THUNDERSTORM, MICROBURST, AND WINDSHEAR REPORTS WHEN CONDITIONS DIFFER FROM AUTOMATIC TERMINAL INFORMATION SERVICE BROADCAST INFORMATION AND WHEN ACTUAL PILOT REPORTS (PIREPS) HAVE BEEN RECEIVED, AND TO SOLICIT FURTHER PIREPS UNTIL SUCH TIME THAT CONFIRMATION IS RECEIVED THAT THE CONDITION NO LONGER EXISTS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Reconsidered
Mode: Aviation
Location: DALLAS/FT WORTH, TX, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA85AA031
Accident Reports: Delta Air Lines, Inc., Lockheed L-1011-385-1, N726DA
Report #: AAR-86-05
Accident Date: 8/2/1985
Issue Date: 9/3/1986
Date Closed: 3/20/1987
Addressee(s) and Addressee Status: FAA (Closed - Reconsidered)
Keyword(s): Air Traffic Control, Weather

Safety Recommendation History
From: NTSB
To: FAA
Date: 3/20/1987
Response: The Board has reviewed the sections of FAA Handbook 7110.65 mentioned in response to this recommendation and agrees that the existing procedures adequately address the Board's intent to ensure timely and proper dissemination of PIREPS. Therefore, Safety Recommendation A-86-70 has been classified as "Closed--Reconsidered."

From: FAA
To: NTSB
Date: 12/16/1986
Response: HANDBOOK 7110.65, PARAGRAPH 2-126, REQUIRES CONTROLLERS TO ISSUE PERTINENT ELEMENTS OF WEATHER REPORTS TO PILOTS WHO HAVE NOT ALREADY RECEIVED THIS INFORMATION THROUGH ATIS OR OTHER MEANS. THIS INCLUDES THUNDERSTORM ACTIVITY AND WIND INFORMATION IF IT IS PART OF THE OFFICIAL WEATHER REPORT OR RECEIVED AS A PIREP. THIS EXTENDS TO THE CONTROLLER THE REQUIREMENT OF PROVIDING THAT INFORMATION IF IT IS DIFFERENT THAN THAT WHICH IS CARRIED ON THE ATIS. HANDBOOK 7110.65, PARAGRAPH 3-8, REQUIRES THAT CONTROLLERS PROVIDE PILOTS WITH LOW LEVEL WINDSHEAR ADVISORIES WHEN REPORTED BY PILOTS OR WHEN A LOW LEVEL WINDSHEAR ALERT SYSTEM DETECTS SUCH CONDITIONS. ADDITIONALLY, PARAGRAPH 2-102 REQUIRES CONTROLLERS TO SOLICIT PIREP'S UNDER SPECIFIED CONDITIONS, INCLUDING EXISTING OR FORECAST THUNDERSTORM ACTIVITY AND RELATED PHENOMENA, AND WINDSHEAR. PARAGRAPH 2-102 ALSO REQUIRES THAT PERTINENT PIREP INFORMATION BE RELAYED TO AIRCRAFT IN A TIMELY MANNER. BASED ON THE ABOVE EXISTING PROCEDURES, I CONSIDER THE FAA'S ACTION TO BE COMPLETED ON THIS RECOMMENDATION.