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Thread: Southwest Airlines Jet Suffers PDA In Flight

  1. #1
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    Lightbulb Southwest Airlines Jet Suffers PDA In Flight

    BBC News; Sunday Aug 28, 2016
    Passengers post pictures of plane's engine 'blown apart'

    A plane in the US had to make an emergency landing after a major problem with one of its two engines.

    The Southwest Airlines flight was travelling from New Orleans to Orlando when passengers noticed a problem with the engine.

    Pictures posted online appear to show that part of the engine had blown apart.

    A Southwest spokesperson said there was no explosion.

    None of the 99 passengers or five crew members on board were injured.

    The aircraft has now been taken out of service.

    Investigators from the National Transportation Safety Board are now looking into what happened.
    http://www.bbc.co.uk/newsbeat/articl...ne-blown-apart

    Large portion of front-end gone! Mercifully no report of ground casualties either.
    NB: PDA = Parts Depart Aircraft.
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  2. #2
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    very unusual to lose an intake.
    Eat more pies....M0NCL


  3. #3
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    My first thoughts were , overpressure of the anti-ice ?
    B737,757,767 , A320/330/340/350 ........ And several bars .....

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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    Quote Originally Posted by TinyTim2 View Post
    My first thoughts were , overpressure of the anti-ice ?
    That was my first thought too, but looking at the pics it looks more like a hardware failure or composite structural failure.
    Dip me in chocolate and throw me to the lesbians....



  5. #5
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    Happened at FL310, highly unlikely he would have eng anti ice on. Intake structure gave up the ghost is more likely IMHO.
    Alonso Hater

  6. #6
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    OK, I know what we are all thinking, who did the cowls check last turnaround?


  7. #7
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    Quote Originally Posted by 400 Hertz View Post
    OK, I know what we are all thinking, who did the cowls check last turnaround?

    I doubt we're all thing that at all, the cowls are still there from what I can see...
    Dip me in chocolate and throw me to the lesbians....



  8. #8
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    Quote Originally Posted by 400 Hertz View Post
    OK, I know what we are all thinking, who did the cowls check last turnaround?

    Fan Cowl police say still with the nacelle installation..
    Alonso Hater

  9. #9
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    Default Re: Southwest Airlines Jet Suffers PDA In Flight

    ATW Online; Monday September 12, 2016
    Fan blade metal fatigue cited in Southwest 737-700 engine failure
    The uncontained left engine failure on an Aug. 27 Southwest Airlines flight from New Orleans to Orlando was likely initiated by a fan blade that broke off because of metal fatigue, according to a Sept. 12 investigative update by the US National Transportation Safety Board (NTSB).

    While the fan blade from the Boeing 737-700’s left CFM56-7B engine has not been retrieved, investigators were able to analyze the blade root, which remained in the hub. “The fracture surface of the missing blade showed curving crack arrest lines consistent with fatigue crack growth,” NTSB said, noting the “fatigue crack region” was 1.14 in. long by 0.217 in. deep.

    The blade release and resulting engine imbalance would appear to have played key roles in the inlet of the left engine separating from the aircraft in flight. NTSB said the debris cut a 5 in. by 16 in. hole in the left fuselage above the wing, and while the aircraft did depressurize, NTSB said the passenger interior compartment had not been penetrated and no fan blade or inlet material was found in the hole. It is not clear why the fan blade containment ring, part of the inlet structure, did not contain the failed titanium alloy blade, a requirement that must be demonstrated for engine certification.

    Visible damage from pictures of the aircraft also included buckling of the leading edge wing root fairing and dents on the left horizontal stabilizer leading edge and left winglet leading edge. Passengers reported hearing a “loud noise” when the CFM56-7B engine failure occurred about 13 min. after takeoff at 31,000 ft. over the Gulf of Mexico. The pilots diverted to Pensacola for a safe landing.

    Future NTSB work in the investigation will include measurements of the hub contact areas of all the blades, a non-destructive examination of the blade surfaces for cracks, and a review of engine maintenance records.

    Of the 15 airworthiness directives FAA lists for the CFM56-7B going back to 1998, none involve fan blades.

    By: John Croft
    Missing Inlet Cowl in the drink, then. Fortunately missed luxury yachts and cruise liners.
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