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Index:Delta-Air-Lines-Flight-191-NTSB-Final-Report-AAR-86-05.pdf

Title NTSB Aircraft Accident Report - Delta Air Lines Flight 191
Author National Transportation Safety Board
Year 1986
Publisher U.S. Department of Transportation
Location Washington D.C.
Source pdf
Progress Source file needs an OCR text layer
Transclusion Index not transcluded or unreviewed
.. TECHNICAL REPORT DOCUMENTATION PAGE

I. Report No. _ 2.GovernmentAccession No. 3.Recipient's Catalog No. .N4TSB/AAR-86/00 PB86-910406 . . lo. Title and Subtitle Aircraft Acmdent Report--1)eIta ' 4 5.Report D'a't'é'"

Air Lines, Inc., Lockheed L-101 1-385-1, N726DA, August 15, ’1986

war My 5. . t ,w. .M . 5

Dallas/Fort Worth International Airport, Texas, ‘ ’

. Performing “Organ i zatj '0an August 2, 1985 ‘ ' W Code' '- 9'1

7. Authoris) _ ‘ ' ‘ .,__8V.Performing Osrganizatjon

9. Performing Organization Name and‘AddreSS' ' :",; lQ.Nork Unit No. National Transportation safety Board" _ ' ' " I' 422413“ _. V,_ Bureau of Accident Investigation ' ' _'_ ' ‘ ‘ “ ' I‘ll.Contractf_or Grant__Np-.: Washington, _D.‘C. 20594 ' ‘ ‘ ' ‘ » . - . .. V

lfi-TYPe of Report

y'Period'Covered

Aircraft Accident ité'pém AuguSt1985

12.Sponsoring Agency Name gnqungess ljaé‘.“

NATIQNAL 'lRANSPORTATION SAFETY BOARD . z . ‘ ‘ N§Sh1ngt9n. 0- Cf'20594 *~ ~ lh.Sponsorinnggency Qode

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lS.Supplementary Notes A

'6'Absiract ._ On August 2,’ 1985, at 1805:52‘ central-‘daylight' time, Delta Air ‘fL'i‘ries flight 191, a Lockheed L-1011—‘385—1, 'N726DA,‘ crashed whileapproaching to land on ‘rurixxfay 17L at the Dallas Fort Worth ‘International Airport, Texas, ' While passing'through t_he:rain shaftbene‘ath a thunderStOrm, flight 191 entered a microbiir's‘t Which 'the pilot'iwas unaplejto traverse successfully.‘ The airplane struck the 'ground‘about‘_6,30’0 feet north'of the appiroa’rch

.end of runway 17L,‘hit a car'on a highway'north ofgh'efirunwayikilling’ the driver, strucjf<:t§-co

_ water! tanks on the'airport, and broke apart.‘ Except’for‘ra‘iséction of the airplane containing the aft fuselage and empennagegthe ,Arer‘nainderr of "thefi'airplane disintegrated duringf the impact sequent-e," and a'se‘vere‘ fi‘r'e“"é’ru'p‘ted 'di’i’r’i’h’g th’éa'i‘mipact sequence. Of' the 163‘pexfsdns aboard, 134 passengers and crewmemberswere killed; 26 passengers and 3 cabin attendants survived.' . . ' , a " j . 5H,, , : . affliii‘rl 11 ‘ H". ‘ 3‘“;

‘;:r'= tug azriuxi psie eunua,y133'_ . H . A. ., w.

'The National Transportation,Safety Board; determines that'the‘ Probable causes

of the accident were ,thfé‘:‘flightc‘rew‘s‘déaisioni'tofiinijtiiteiand continuethe‘“approachintd a

cumulonimbus cloud Which theyibbstéFi/e‘arta"Eantaihi’vis‘ifiié lightning; ‘the‘lack of specific

guidelines, procedures, and training for avoiding and escaping from low—altitude wind shear;

. and‘the lack of definitive, real—time wind shear hazard information. "Thisq’iz‘esulted in‘the aircraft‘s "encounter at low altitude 'with‘ a‘m‘icrobursté-i‘nduced; severe .fwi‘ndn shear from; a

. rapidly developing thunderstorm located on the final approach course. ' ' " ’ ’i ' 2*“

\i '31!"

.-l~8..Distribut:ion Statement - .ThiS document is available from .the National Technical

_-1‘
:Informat-i‘on’a Service,

Springfield,- _‘Virginia, _ 22161.

.17'Kexword5 _ instrument approaCh;'thunderstorm; microburst; wind shear; LLWAS; DOppler radar; weather; PIREPs; microburst penetration; microburSt avdidan'ce‘procedures" ‘ ‘

13.5ecurity Classification» .20.$ecurity.Classificafioni Zl.No: of Pages 22.Price (of; this i‘n’zézisif(oifurfiis-p“a‘g"e);va;;;:. 3. _, - a _.  : UNCLASSIFIED- -- a » ' (UNCL'ASSI'FLED V 166-”

NTSB Form 1765.2 (Rev. 9/74)
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