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UPS plane crashes near Louisville airport

avherald.com

301–310 of 469 posts

Re: UPS plane crashes near Louisville airport

#301

I didn’t realize the MD-11 was still in use. It has had a difficult time in passenger aviation. Looks really nasty. It seems to have come down in an industrial area, which will significantly reduce casualties. I can’t even imagine this, in a residential area.

I had just seen and admired a UPS MD-11 making it's climbing turn after takeoff from ONT earlier that day. They are quite capable and a beautiful aircraft.

Re: UPS plane crashes near Louisville airport

#302

Earlier quoted context omitted.

Statistics say otherwise. Flying was far more hazardous in the days before deregulation.

That may well be correlation and not causation. The industry (edit: planes in particular) is also decades more mature, as is manufacturing in general.

Yes, admittedly, there could still be a reason why the GP's opinion is right, even though the numbers don't back it up. It's hard to argue that deregulation made flying safer, because as you say there were a ton of other factors in play.

However, it's impossible to argue that deregulation made flying more dangerous, as the GP believes, simply because flying didn't become more dangerous. Sure, maybe we'd be even safer in the air if price deregulation hadn't happened, but that requires an impressive amount of handwaving. Overall, the tradeoff seems to have worked out incredibly well for everyone. The only people who are really in a position to object would be climate researchers.

Re: UPS plane crashes near Louisville airport

#303
This really reminded me of a colleague who had a part-time night job flying cancelled checks from Centennial Airport (KAPA, south of Denver) to SLC. A bunch of us went out to lunch on a Friday in December 2005. That night, on his return to KAPA, he crashed his Mitsubishi MU-2 about a mile short of the runway. He and his co-pilot were gone, just like that. On Monday you could see the wreckage and cleanup from our office which was near the airport. It was so surreal.

Re: UPS plane crashes near Louisville airport

#304
post #106

The AVHerald is usually the best source for these things, rather than MSM: https://avherald.com/h?article=52f5748f&opt=0 > Ground observers reported the aircraft had been delayed for about two hours for work on the left hand engine (engine #1), the engine #1 separated during the takeoff run, the center engine emitted streaks of flames, the aircraft impacted a UPS warehouse and ploughed through other facilities before…

This is likely relevant https://www.vanityfair.com/news/2015/11/airplane-maintenance... TDLR 10-20 years ago, the US started allowing maintenance of domestic planes in foreign countries, outside the reach of the FAA’s inspections

Maybe the maintenance is better in the other country.

Either way, to say it's "likely relevant" is a huge leap. We have no idea what caused the crash - it could be a million things and likely some combintation of them.

Re: UPS plane crashes near Louisville airport

#305
post #106

The AVHerald is usually the best source for these things, rather than MSM: https://avherald.com/h?article=52f5748f&opt=0 > Ground observers reported the aircraft had been delayed for about two hours for work on the left hand engine (engine #1), the engine #1 separated during the takeoff run, the center engine emitted streaks of flames, the aircraft impacted a UPS warehouse and ploughed through other facilities before…

https://archive.is/cdKm0 My IP was blocked, for some reason.

You mean AV Herald? The site says you can't use a relay service to access it. For example, Apple Private Relay.

Re: UPS plane crashes near Louisville airport

#306
post #223
post #219

Earlier quoted context omitted.

Given an hour spent flying in a commercial US-flagged airliner or an hour spent in your living room, and you're (far) more likely to get hurt or die in your living room.

Is that actual statistic?

Actual statistics: In 2023 there were 35.3 million commercial flights worldwide.[1] In that year, there were 66 accidents in commercial aviation worldwide, of which one fatal (9N-ANC).[2] This means that the chance of being in an accident was approx 1:535,000 (0.000187 %). The chance of getting into a fatal accident was 1:35,300,000 (0.000003 %). Per passenger the chance of fatality was approx 1:61,111,111 (0.00000164 %), with 72 fatalities among 4,400,000,000 total passengers.

In contrast, the United States saw 125,700 preventable deaths in the home in 2023.[3] The country had a population of 336,806,231 people back then.[4] This means a probability of approx 1:2,679 (0.037 %).

[1] ATAG Aviation Beyond Borders 2024

[2] ICAO Safety Report 2024 Edition

[3] National Safety Council (NSC) Injury Facts

[4] World Bank

Re: UPS plane crashes near Louisville airport

#307

From wikipedia, Boeing stopped producing MD-11 since 2,000. Does that mean any MD-11 flying is at least 25 years old? I know 25-year is not particularly old for aircrafts, but MD-11 is not exactly reliable. Is there any reason UPS is flying these planes?

Airframes have a limited lifetime, partially defined by takeoffs and landings (and pressurization cycles). Cargo planes experience fewer cycles than passenger airlines since cargo carriers' aircraft usually only make a one or two flights a day, whereas passenger aircraft a flown back to back as frequently as possible. Historically, cargo carriers would buy used aircraft and convert them, but that's changing.

The gist is correct, but the subtleties are hiding in the details.

Wide-body (long-haul) airplanes are generally limited by flying hours since they rarely reach their maximum allowed flight cycles.

In contrast, wide-body cargo planes typically fly shorter legs compared to when they are used as passenger carriers. And as a result, they are much more likely to hit their critical cycle limit.

Re: UPS plane crashes near Louisville airport

#308
post #127
post #125

Earlier quoted context omitted.

Oh woah, very insightful discussion thread you found there. So the tl'dr is: the leading very preliminary theory is that the MD-11's left engine fell off the wing just like https://en.wikipedia.org/wiki/American_Airlines_Flight_191 (a DC-10, the immediate predecessor of the MD-11) which was caused by maintenance errors weakening the pylon structure holding the engine.

This video from an aviation youtuber contains a picture of the engine: https://www.youtube.com/watch?v=U4q2ORhIQQc&t=526s (the video itself is also worth watching in full IMHO). What strikes me as odd is that this looks like the "naked" engine, without the cowling/nacelle that usually surrounds it? Anyway, if an engine departs the aircraft shortly after (last-minute) maintenance was performed on it, that's indeed sus…

The cowling isn't particularly structural so if your engine falls off on takeoff it's not so surprising that the cover didn't land with it.

Re: UPS plane crashes near Louisville airport

#309
post #127
post #125

Earlier quoted context omitted.

Oh woah, very insightful discussion thread you found there. So the tl'dr is: the leading very preliminary theory is that the MD-11's left engine fell off the wing just like https://en.wikipedia.org/wiki/American_Airlines_Flight_191 (a DC-10, the immediate predecessor of the MD-11) which was caused by maintenance errors weakening the pylon structure holding the engine.

This video from an aviation youtuber contains a picture of the engine: https://www.youtube.com/watch?v=U4q2ORhIQQc&t=526s (the video itself is also worth watching in full IMHO). What strikes me as odd is that this looks like the "naked" engine, without the cowling/nacelle that usually surrounds it? Anyway, if an engine departs the aircraft shortly after (last-minute) maintenance was performed on it, that's indeed sus…

The fan cowl and thrust reverser cowl are structurally fastened to the pylon/strut at the top, they only wrap around the engine, and are fastened to themselves at the bottom using latches. The strut considered part of the airframe structure. The inlet cowl is bolted directly to the engine, I saw in a picture that it was found approximately mid-field on the airport property.

Re: UPS plane crashes near Louisville airport

#310

From wikipedia, Boeing stopped producing MD-11 since 2,000. Does that mean any MD-11 flying is at least 25 years old? I know 25-year is not particularly old for aircrafts, but MD-11 is not exactly reliable. Is there any reason UPS is flying these planes?

Airframes have a limited lifetime, partially defined by takeoffs and landings (and pressurization cycles). Cargo planes experience fewer cycles than passenger airlines since cargo carriers' aircraft usually only make a one or two flights a day, whereas passenger aircraft a flown back to back as frequently as possible. Historically, cargo carriers would buy used aircraft and convert them, but that's changing.

This particular aircraft was acquired by UPS in 2006 and converted for cargo missions. It was originally delivered as a passenger aircraft to Thai Airways International in 1991. [1] I actually saw this exact aircraft at RDU International in August of this year and took a photo, since tri-engine aircraft in general are not very common these days.

[1]: https://www.flightradar24.com/blog/flight-tracking-news/majo...

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