Turkish Airline flight 981, accident presentation. ıts the 4th biggest airplane accident happened.

1. TurkishAirlinesFlight 981
BY; ESRA KURTULUS

2. Content
• Introduction
• General Information
• Historyofthe accident
• DisasterAnalysisand Safetyvulnerabilities
• Summary and Discussion

3. General Information ;
Sortly before 11:42 GMT
Date; Sunday, 3 March 1974
Aircraft; McDonnel DOUGLAS DC-10-10
TC-JAV
Location of the wreckage;Ermenonville Forest

4. OWNER AND OPERATION;Turkish Airline
TYPE OFOPERATİON ;PublicTransport of passenger
FlightTK981
Istanbul–Orly –London
Person on Board;11 Crew Member, 334 Pessanger
Aircraf Commander;NejatBERKOZ

5. HistoryoftheAccident
• Turkish Airlines Flight 981 wasa regular flight operated byTurkish
Airline,from IstanbultoLondon,with anextra stop inParis.The
flight's second leg,from Paris to London,was normally
underbooked, but,dueto astrike byBritishEuropean
Airwaysemployees, manyLondon-boundtravellers, bookedfrom
Flight 981,delaying by30 minutes.

6. Just after passing overthe Meaux. left cargo doorblew
off,and the sudden difference in air pressure between
the cargo area and the passenger cabin above it,
which caused a section of the cabin floor brokedown,
blow outthe Cargodoor with six occupied passenger
seats attached to that floor section.

9. The bodies of the six Japanese passengers who were ejected
from the aircraft found with the cargo door, landed in near Saint-
Pathus approximately 15 kilometres south of where the
remainder of the plane was found.

10. When the door blew off, sets of backup control cables blew
too. That were completely destroying the pilots' ability to
control the elevators, rudder, and Number 2 engine. The flight
data recorder showed that the throttle for Engine 2 snapped
shut when the door failed. The loss of control of these key
components resulted the pilots losing control entirely.
The aircraft almost attained a 20-degree pitch down and speed
up, while Captain Berköz and First Officer Ulusman tried to regain
control , Seventy-seven seconds after the initial door gave way, It
hit into the trees of Ermenonville Forest, at about 500 miles per
hour (800 km/h)killing the remaining 340 people onboard.

11. CRASH ANIMATION…

12. (Explosion Sound)
First Officer : What happened?
CaptainPilot: The cabin exploded.
(After 11 seconds)
First Officer : Areyou sure?
CaptainPilot: Take it up! Pick upthe nose ofthe plane.
First Officer : Ican not lift it. Itsnot answering.
CaptainPilot: What is it, what is it?
(After 23 seconds)
Flight Engineer: There is nothing left todo.
First Officer : 7000 feet
(Over speed alarmstarted toring)
(After 32 seconds)
CaptainPilot: Hydraulics?
First Officer : We lost them. ...off.
(After 54 seconds)
CaptainPilot: Ithink we're stuck.
CaptainPilot: Ithink we're stuck.
First Officer : Thank you then. (ozaman eyvallah)
(After 56 seconds)
CaptainPilot: Give me the gas!
(After 77 seconds)
Crashsoundsareheard.

13. WRECKAE

15. EARLIER PROBLEM
An American AirlinesDC-10,flying as AmericanAirlines Flight 96, had experienced the same problem about two years ago.At that time, thecrew had
managed to land the plane safely. On the ground it was discovered the rearcargo door had opened inflight. This causeddamage to the fuselage but not the
explosive damage inthe case of Turkish981.Both planes experience uncontrolleddecompression when the cargo door latches failed. But Turkish981had
additional damage to the plane that may havemade it uncontrollable inflight
AnAirworthiness Directive was immediately issued by the Federal Aviation Administration(FFA). It called for strengthening the load floor and control cables.It
also required improving the electrical wiring havingto do with the cargo door

16. TheAccident in World Media

17. TheAccident in World Media

18. • First ithadbeen printedin English,which theAlgerian born
baggagehandlercouldnotread,
• andperhapsmoreimportantly,thedesign ofthemechanism
andtheshodinessofthemodificationsmadeit possibletopull
downthelocking lever, bending the internalcomponents,
withouttheuseofanyabnormalforce
• Thefaultydesign alsoaccountedforthefactthatawarning
light on theflight engineer panelhadfailedtoilluminate,
indicatingthatthedoorwasnotlocked.
• Thedeathtoll of346exceeded thatofanypreviousaviation
incident
• Issues relatedto thelatchofthe DC-10includehuman
factors,interfacedesign andengineering responsibility.
Causes;

19. TheErmenonvilleForest is astate-ownedforesin Oise,France.
Today,amemorial tothe victims ofTHY flight 981standsin theforest.
Monumentto the crashvictimsof
Turkish AirlinesFlight981

20. Thanks for Listening…