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AIR CRASH INVESTIGATION---------------------------------------(QANTAS 32 Engine Failure)Siranjivi Rooban Ranjith

Contents Air Crash DetailsWhat Happened ??Measures during MayDayProceduresAnalysisReportConclusionQueries

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Air crash detailsAircraft Type : Airbus A380Aircraft Company : Qantas - AustraliaFailure : Engine Burn out + Turbine Blade FailureDate : November 4, 2010Route : Singapore - SydneyReason : Manufacturing DefectConsequence : Engine collapse + Wing Structural Failure

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WHAT HAPPENED ??

QANTAS A380 Engine Failure

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Measures during Mayday ! !Pilots Action :Disengage AutopilotBlock the fuel flowLower the altitudeLand as soon as possibleSafety of flight passengersProblems Occurred :Turbine OverheatEngine No. 2 FailureLeakage of FuelWing Skin FractureLoss of maneuverability control6

P r o c e d u r e s Report to ATC as soon as Air Crash Occurs

Reporting to the respective A/C Company

Report to respective Aviation Safety organization ATSB

Investigate Air crash spot

Finding out the Clues

7Retrieving Black Box data

Connecting the dots

Analysis

Report - Documentation

A n a l y s I s 8 The possibilities of the engine failure was so difficult to judge by the investigators.

But the clues obtained from the sight, was a broken turbine blade. It was sent to the Rolls Royce headquarters for analysis.

From the analysis it was clear that the size of the turbine was expanded when compared to the manufacturers specification.

The engine was then dismantled and investigated and found that the burn out was caused by oil leakage.

Then the Rolls Royce found out that the STUB PIPE which was near to the turbine got leaked.

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REPORT13 A stub pipe is a oil carrying pipe which is fixed near the turbine section. Since the dimensions of the Stub pipe was wrongly manufactured, it caused the oil to leak out of the thin circumference due to the increase of pressure at a high altitude. The leaked oil spilt on the turbine making it to rotate at a tremendous velocity at 1495 deg. Celsius. This was purely due to the overheat and it resulted in the overheat of the Nickel alloy turbine to expand at extreme temperature exceeding the limit. This caused the turbine blade to disengage from it position and struck the nacelle and the bypass section of the engine and also the fuel tank inside the wing resulting in the engine breakdown. This was the reason for the fire breakout and for all the damage caused.

After this incident all the A380 in the world was grounded for a check up for the same fault and it was rectified to prevent such a chaos.

CONCLUSION14 Engineering develops only by making errors. But when the errors exceed the limits they turn out to be a threat to mankind.

Aviation being the most dangerous sector of engineering has to be more cautious and simple mistakes should be avoided in order to sustain and maintain safety & profit.

This incident that happened to the QANTAS 32 proves to be a silly mistake which was not noticed even by the greatest Engine creators in the history.

We humans should always learn the good thing to eliminate the false from our past mistakes to have a blooming future. Lets always hope for the best !

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