NTSB Identification: DCA85AA031.
The docket is stored on NTSB microfiche number 27873.
Scheduled 14 CFR DELTA AIRLINES, INC.
Accident occurred Friday, August 02, 1985 in DALLAS/FT WORTH, TX
Aircraft: LOCKHEED L-1011-385-1, registration: N726DA
Injuries: 135 Fatal,15 Serious,13 Minor,2 Uninjured.

The Safety Board's full report on this investigation is provided as Aviation Accident Report number AAR-86/05. To obtain a copy of this report, or to view the executive summary online, please see the Web site at http://www.ntsb.gov/publictn/publictn.htm


PSBL SCATTERED THUNDERSTORMS (TSTMS) WERE FORCAST & DRG ARRIVAL, SVRL CELLS WERE DEVELOPING IN THE AREA. DELTA FLT 191 WAS VECTORED ARND A LARGE CELL, THEN WAS SEQUENCED BHND OTHER ACFT & CLRD FOR AN ILS RWY 17L APCH. THE FLT CREW & SVRL PRECEEDING CREWS SAW LIGHTNING IN A CELL NORTH OF THE ARPT, BUT CONTD W/O RPRTG IT. ON THE APCH, FLT 191 ENCOUNTERED A MICROBURST WHILE PASSING UNDER THE CELL. INITIALLY, THE 1ST OFFICER, WHO WAS FLYING THE ACFT, RETARDED THE THROTTLES IN A HEADWIND. THE ACFT THEN ENCOUNTERED APRX 73 KTS OF WINDSHEAR, UP/DWNDFTS, VORTEX FLOW & A TAILWIND. GO-AROUND PWR WAS APPLIED, BUT THE ACFT STRUCK THE GND APRX 6300' NORTH OF RWY 17L, HIT A CAR & 2 WATER TANKS, BROKE APART & BURNED. INV REVEALED THAT BTN 1752 & 1800 CDT, THE TSTM CELL GREW FM VIP LVL 1 TO VIP LVL 4. A CENTER WX SVC UNIT METEOROLOGIST WAS ON DUTY, BUT NOT AT THE RADAR PSN AT THAT TIME & DIDN'T OBSV THE CELL GROWTH. CAPT'S DECISION TO CONT APCH DIDN'T COMPLYWITH DELTA'S WX AVOIDANCE PROC; THERE WAS A LACK OF SPECIFIC GUIDANCE & TRAINING FOR AVOIDING/ESCAPING LOW ALT WNDSHEAR.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FLIGHT INTO KNOWN ADVERSE WEATHER..CONTINUED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROCEDURE INADEQUATE..COMPANY/OPERATOR MANAGEMENT

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

INADEQUATE TRAINING(EMERGENCY PROCEDURE(S))..COMPANY/OPERATOR MANAGEMENT


Contributing Factors

WEATHER CONDITION..THUNDERSTORM


Contributing Factors

IN FLIGHT WEATHER AVOIDANCE ASSISTANCE..INADEQUATE


Contributing Factors

INADEQUATE SURVEILLANCE,INSUFFICIENT STAFF..FAA(ORGANIZATION)


Contributing Factors

WEATHER CONDITION..LIGHTNING


Contributing Factors

FLIGHT ADVISORIES..NOT ISSUED..PILOT OF OTHER AIRCRAFT


Contributing Factors

WEATHER CONDITION..RAIN


Contributing Factors

WEATHER CONDITION..WINDSHEAR


Contributing Factors

WEATHER CONDITION..UNFAVORABLE WIND


Contributing Factors

WEATHER CONDITION..DOWNDRAFT



Contributing Factors

OBJECT..VEHICLE


Contributing Factors

OBJECT..AIRPORT FACILITY

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