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NTSB: Southwest Airlines Followed Engine Inspection Protocol

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Mechanics had performed visual and fluorescent penetrant inspections of the fan blades in the CFM56-7B turbofan that failed during an April 17 flight of a Southwest Airlines Boeing 737-700 within the period required by Federal Aviation Administration rules, the U.S. National Transportation Safety Board revealed in a May 3 investigative update. The engine in question had accumulated 32,000 cycles since new and 10,712 cycles since a November 2012 overhaul when it failed. At the time of the… (www.ainonline.com) Altro...

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ted3020
Ted Taylor 1
I never heard. Was the passenger wearing her seatbelt? Would wearing it prevent her being sucked out?
wingbolt
wingbolt -1
This can’t be! The NTSB must be wrong.

According to sparky “There is only one thing and one thing only that can explain why it was not detected. Missed or Improperly complied with inspection! This incident was preventable in many different ways and all of those ways aim directly at the maintenance department”.
bentwing60
bentwing60 3
Not exactly!
wingbolt
wingbolt 1
I was being sarcastic.
joelwiley
joel wiley 4
The sarcasm font generator is broken Again? sheeesh!
AABABY
AABABY 1
I wonder what Preacher would make of this?
busheyrk
He would have made some sense of the whole Iincident.

What I don’t understand, after doing some basic math, is how could the engine have an average of 5+ cycles every day. Isn’t that two and one-half flights VERY DAY over more than five years? Doesn’t seem like even SWA could do this.
joelwiley
joel wiley 1
One SWA flight SMF-LAX-AUS-HOU-RDU. That is 5 cycles there. A/C started in SMF, but that doesn't mean it finished the day in RDU. I've seen SWA flights originating at SMF take multiple stop flights to the east coast, then return to SMF with more interim stops. The number seems high but SWA uses their planes - a lot.
busheyrk
Thanks Joel. A lot of really short flights, but each counts as a cycle. SWA just runs the fan blades off these suckers!
joelwiley
joel wiley 1
Aloha may have shorter hops. But then, they're on island time 8-)

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