Southwest flight 1380 makes emergency landing in Philadelphia after engine failure

[Zorba]

i don't think most people appreciate how much design, analysis, and testing goes into aircraft overall, and the regulatory structure that controls that design. there's a reason there's only been 1 fatality in a literal decade of commercial aviation. can we do better? sure. but that's pretty goddamn good if you ask me.

Agree. That is also why each of these fan blades cost $52,000 for 20 pounds of titanium.

It is also why I get so annoyed about the wild west that is self-driving cars atm.

 

[Zorba]

VW didn't just "falsify data", they created PCM software that knew when the engine was being tested and then it went into "cheat" mode, I've never heard of an aviation engine manufacturer pulling anything like that.

Yeah, there is also a huge difference in cheating on emissions and lying about the life of an engine component. With emissions you could hope no one ever noticed, with engine life they will start blowing up and creating highly publicized events and causing millions in damage for each event. There are around 192,000 of these blades in service right now, if you lie about their life, they will start failing and you are in a huge world of pain.

 

[PottedMeat]

That is also why each of these fan blades cost $52,000 for 20 pounds of titanium.
.

that's for a cfm56?

here's a person holding a cf6 blade ( maybe 1/3 larger ), wonder how much a usable one of these costs

 

[Zorba]

that's for a cfm56?

here's a person holding a cf6 blade ( maybe 1/3 larger ), wonder how much a usable one of these costs

That was the list price given for the AD. CF6 blade is longer, but I think it has a shorter cord and not as complicated of a shape. In reality they charge what they can get away with, not what it actually costs to make. Then GE and Safran both offer a lot of "repairs" that are basically replacements for much less money because they share revenue on new parts but not repairs. There are literally repairs on the CFM where you cut off the PN and SN from one turbine nozzle, weld them to a brand new one and it is a "repair," for 40% less than new.

About 10 years ago the GE90-94B composite blades were $115K 😱

 

[Fenixgoon]

that's for a cfm56?

here's a person holding a cf6 blade ( maybe 1/3 larger ), wonder how much a usable one of these costs

awww but I want a GE-9X blade (I have a picture of myself standing inside the inlet duct. it's an impressive engine to say the least).

 

[Puffnstuff]

VW didn't just "falsify data", they created PCM software that knew when the engine was being tested and then it went into "cheat" mode, I've never heard of an aviation engine manufacturer pulling anything like that.

My point is that validation testing is not infallible irrespective of the agency performing it.