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Here's a cool thread with some technical info about GPS: https://forums.somethingawful.com/showthread.php?threadid=3960281 Also some of my automotive Garmins would randomly crash or freeze, repeatedly.
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Apr 1, 2021 21:38
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Minnesota Mixup posted:Yeah, even the lycomings used in smaller planes are going to run you $15-25k+ depending on the amount of work you can do yourself. Planes are very expensive for upkeep and you cannot let something slide if you value your life. 
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Apr 1, 2021 23:08
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hobbesmaster posted:Are they really? I guess it’s not the most ridiculous price if you have to use a CMM on each one. Hell it might even be low for that. Nah, I bet the tolerances on that part are +/-.030, a pair of calipers would be fine, I sincerely doubt Textron even has a digital model for that part. e: actually they probably use a check fixture for something like that, wouldn't even need a pair of calipers I have dived face first into the realm of airplane spares and AOG parts for private and business aircraft over the last few weeks as a part of a new role I took on at work and poo poo is expensive because: 1) it's low volume compared to automotive manufacturing, or even commerical aircraft production so efficiencies of scale just aren't there, like you wouldn't believe how much stuff on a B300 is made by a guy on a bridgeport or a cincinnati 2) you're paying a lot of money to know for sure that what you're buying is exactly what it says it is, and that goes for every piece of the supply chain 3) there's some stuff related to heat treatment and finishing where there's maybe 2 or 3 places in the entire country certified to perform that process, and they know that so they can charge pretty much whatever they want rscott fucked around with this message at 23:46 on Apr 1, 2021 |
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Apr 1, 2021 23:35
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standard.deviant posted:You laugh, but I’ve caught a defense contractor trying to use Bing maps on aviation hardware. Should they not do that?
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Apr 2, 2021 02:04
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rscott posted:...AOG parts... One of my friends was in the shipping/receiving department at his job. I told him next time he had something shipping cross-country to get a quote for "AOG FIRST AM" on it. The price was flatly astounding for the box of gloves or whatever. "I could buy a plane ticket, pick the box up, and fly back for that price!" Yes. Exactly. That's what happens. Some dude picks up your part, boards an airplane, and drops it off for you. Then flies back home. If you tell Textron you no joke need it absolutely by 8AM the next day, they'll put the part in one of the jets on the field and fly it to you. I think that runs ~$3000/hr of flight time from Wichita to wherever the part needs to go. Plus the cost of the part, obvs.
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Apr 2, 2021 02:16
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“AOG” is “aircraft on ground” and means an aircraft is out of service. All aviation and aviation adjacent companies have an “AOG desk” which will likely be staffed 24/7 ready to handle these crazy expedited requests. When your flight is delayed for a mechanical issue those are the wheels moving. The logistics can get ridiculous. At an extreme imagine a 777 losing an engine and diverting to a mid pacific ETOPS alternative like midway.
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Apr 2, 2021 02:33
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hobbesmaster posted:“AOG” is “aircraft on ground” and means an aircraft is out of service. All aviation and aviation adjacent companies have an “AOG desk” which will likely be staffed 24/7 ready to handle these crazy expedited requests. When your flight is delayed for a mechanical issue those are the wheels moving. I was once on a flight that was delayed at the gate because they were missing a particular safety placard. I can only imagine the absolute shitstorm that was going on behind the scenes over a 50 cent (i.e. $300) piece of plastic.
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Apr 2, 2021 02:42
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I interviewed once to fly for an on demand air freight company (servicing largely the Detroit-Mexico auto industry market) and in the general "what we're about" intro section, the interviewer told me about extreme (but real) examples of flying a DC-9 with literally nothing but a box of bolts in it. It seems absurd, but it's worth it to the customer because without it, an assembly line shuts down
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Apr 2, 2021 02:53
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babyeatingpsychopath posted:One of my friends was in the shipping/receiving department at his job. I told him next time he had something shipping cross-country to get a quote for "AOG FIRST AM" on it. The price was flatly astounding for the box of gloves or whatever. "I could buy a plane ticket, pick the box up, and fly back for that price!" Yes. Exactly. That's what happens. Some dude picks up your part, boards an airplane, and drops it off for you. Then flies back home. Yeah, doing this job I learned how many different levels of overnight air there are and the frankly ridiculous levels people will go through to shave a few hours off of delivery. Haven't had to fly anyone out to deliver a part though, mostly because we're in wichita and can drive them to everyone
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Apr 2, 2021 02:58
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Fasteners and other small hardware like nut plates and bolts are funny because the difference in cost between 1 and 10,000 is pretty tiny, but sometimes the only place you can get them is from some shop in Italy with a 26 week lead time, so you have to get creative
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Apr 2, 2021 03:13
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babyeatingpsychopath posted:One of my friends was in the shipping/receiving department at his job. I told him next time he had something shipping cross-country to get a quote for "AOG FIRST AM" on it. The price was flatly astounding for the box of gloves or whatever. "I could buy a plane ticket, pick the box up, and fly back for that price!" Yes. Exactly. That's what happens. Some dude picks up your part, boards an airplane, and drops it off for you. Then flies back home. I mentioned above about Certified Rebuilds which start at 6 figures for a refresh which literally means down to the frame. Heck tyres can range from $40k-$150k each depending on the market. I've been out of the game for nearly a decade and my brain is bad for remembering specifics. But Cat had/has a 24hour 'Anywhere in the world' type parts service. And yay checking the corporate website for info and I find a pic of young me probably taking a pic of one of the rebuilds 
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Apr 2, 2021 03:26
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hobbesmaster posted:“AOG” is “aircraft on ground” and means an aircraft is out of service. All aviation and aviation adjacent companies have an “AOG desk” which will likely be staffed 24/7 ready to handle these crazy expedited requests. When your flight is delayed for a mechanical issue those are the wheels moving. https://www.flightradar24.com/blog/putting-ed-force-one-back-together-again/
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Apr 2, 2021 03:52
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CarForumPoster posted:Should they not do that? Let’s just say Bing is not great at precision when there is an altitude component. We did not accept delivery. Also, AOG chat... I have definitely seen people dispatched from the depot to hand-carry parts to Afghanistan. “Drive this to the airport and take the first flight out to a major international hub in Europe or Dubai. We will sort the rest of your itinerary while you’re in the air.”
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Apr 2, 2021 04:18
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TIL that Iron Maiden’s singer is an ATP with a 747 rating
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Apr 2, 2021 04:20
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vessbot posted:I interviewed once to fly for an on demand air freight company (servicing largely the Detroit-Mexico auto industry market) and in the general "what we're about" intro section, the interviewer told me about extreme (but real) examples of flying a DC-9 with literally nothing but a box of bolts in it. It seems absurd, but it's worth it to the customer because without it, an assembly line shuts down I work for a tier 1 auto industry supplier and we have to book chartered air courier service 2-5x a year on average. All the car companies have absolutely brutal downtime penalties for missed deliveries in their vendor contracts, usually ~300k/hr Until 2008 they had a full time pilot in-house. shame on an IGA fucked around with this message at 04:26 on Apr 2, 2021 |
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Apr 2, 2021 04:22
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dupersaurus posted:TIL that Iron Maiden’s singer is an ATP with a 747 rating He wrote a song about the r101 crash. That’s peak aviation nerd right there.
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Apr 2, 2021 04:22
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babyeatingpsychopath posted:Not only that, but the words printed on there are specifically detailed in the Type Certificate Data Sheet and must appear, verbatim, in those precise locations. In those precise colors. We have this, and we have the 737 MAX.
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Apr 2, 2021 05:35
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Also ladders left in tails.
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Apr 2, 2021 05:44
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That's a feature, for easier future access and repair. We had a handle break off a piece of electronics, the handle, of course, could not be ordered by itself, and only with $170,000 of calibrated circuitry and potentiometer bolted to it. Fortunately the new bit arrived smashed to poo poo, but with a perfect handle, so we got to pull the handle off, replace it with the broken one, and send it back to the manufacturer.
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Apr 2, 2021 06:29
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I've literally chartered aircraft for mid five figures for $500 worth of parts more times than I can count on one hand. $100k+/hr downtime makes it a no brainer.
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Apr 2, 2021 06:32
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slidebite posted:I've literally chartered aircraft for mid five figures for $500 worth of parts more times than I can count on one hand. Post and Av reminds me of British Rob getting a new frontbar/splitter overnighted from UK to USA for his Porsche during one of the Players Runs Humphreys fucked around with this message at 13:19 on Apr 2, 2021 |
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Apr 2, 2021 10:56
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Cojawfee posted:The old days of analog phones had great quality audio. Things sound lovely on phones now because cell phones happened and they had to compress the audio so cell phones could handle it. I missed the chance to telecom nerd when it was timely, but will add that this totally missed the real cause of bad cell call quality. Things actually started out pretty good with the original 1980s era analog AMPS system, then went backwards after the digital transition. Digital happened because, just as in wired trunk lines, digital makes better use of channel bandwidth. But when cell phones went digital, there were new tricks for making use of scarce bandwidth which weren't possible in the 1960s during the original PSTN digital transition: perceptual (lossy) compression. And boy did they use it. The skyrocketing popularity of cell phones and the limited amount of RF spectrum the FCC (and other government bodies outside the US) licensed for cell service meant they had to compress the everloving poo poo out of voice data. The phones were always very high tech devices relative to what was needed for high quality audio, so it was only RF economics driving them to cut call quality to the minimum the market would put up with. And it turned out people were willing to put up with really lovely audio for the convenience of not being tethered to a landline.
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Apr 2, 2021 11:29
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Aprop to this discussion: This Wild New Aircraft Could Make Private Aviation as Affordable as Flying Commercial (It's that diesel high-efficiency plane but the headline made me laugh wot with the discussion ITT)
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Apr 2, 2021 13:31
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Obligatory Aces High/Battle of Britain video: https://youtu.be/ve4kcWuQYsU
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Apr 2, 2021 13:43
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Nebakenezzer posted:Aprop to this discussion: This Wild New Aircraft Could Make Private Aviation as Affordable as Flying Commercial The general population of humans are too drat stupid to control machines in 2 dimensions. Flying cars won't happen sadly. MrYenko posted:Obligatory Aces High/Battle of Britain video:   
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Apr 2, 2021 14:53
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MrYenko posted:Obligatory Aces High/Battle of Britain video: This is loving awesome.
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Apr 2, 2021 15:11
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Humphreys posted:The general population of humans are too drat stupid to control machines in 2 dimensions. Flying cars won't happen sadly.
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Apr 2, 2021 15:12
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MrYenko posted:Obligatory Aces High/Battle of Britain video: I'm having flashbacks to flying a Blackbird in Scalding Pass now.
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Apr 2, 2021 15:43
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vessbot posted:I interviewed once to fly for an on demand air freight company (servicing largely the Detroit-Mexico auto industry market) and in the general "what we're about" intro section, the interviewer told me about extreme (but real) examples of flying a DC-9 with literally nothing but a box of bolts in it. It seems absurd, but it's worth it to the customer because without it, an assembly line shuts down Was that Randy's outfit (USA Jet)? Did you get passed over because you had a college degree? Elviscat posted:That's a feature, for easier future access and repair. 
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Apr 2, 2021 18:06
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ausgezeichnet posted:Was that Randy's outfit (USA Jet)? Did you get passed over because you had a college degree? Haha, yes that's the one. I got the job, but the company indefinitely postponed my newhire class. After a few months in the pool, I got a different job. Everything is better here, but I still regret losing the chance to fly the DC-9 and 727. vessbot fucked around with this message at 18:27 on Apr 2, 2021 |
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Apr 2, 2021 18:22
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shame on an IGA posted:I work for a tier 1 auto industry supplier and we have to book chartered air courier service 2-5x a year on average. All the car companies have absolutely brutal downtime penalties for missed deliveries in their vendor contracts, usually ~300k/hr I was an intern for a Tier 1. Every so often GM would have a same day need for something and I would be sent to drive it down to Warren. We also shipped things to Holden in Australia and I kept hoping for an expedited order there but it never happened.
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Apr 2, 2021 19:04
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I got the chance to take an up-close look at a NASA WB-57 this week, they were in town to support some tests and parked at the next hangar over. Pretty cool plane. Ludicrously huge wings. The pilot's instrument panel is still mostly 1960's gauges with a few small 90's era screens and a modern Garmin stuck on the side. The sensor operator's station is all completely modern screens and systems; the guy doing the show and tell said they swap a lot of the control panels out depending on the sensor payload, which is also basically custom-configured for each mission. The pilot mentioned that the airframe is only about seven years younger than the vintage B-17's that are flying around.
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Apr 2, 2021 19:22
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Yeah, for some reason NASA seems to get the really early versions of every plane. IIRC either their 747 or one of their other B-52s was literally the first one off the line.
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Apr 2, 2021 20:30
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Probably a perk of being the National Aeronautics and Space Administration.
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Apr 2, 2021 20:35
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Reminds me that one time I was waiting to take off and this guy came in to land (Owned by the FAA and used for testing instrument navigation installations etc)
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Apr 2, 2021 20:48
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The first plane off the line usually has issues like being heavier than the rest or needing rework or something. That’s a good fit for NASA where the planes aren’t going to go into “normal” service and each flight can be treated like a test flight if necessary.
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Apr 2, 2021 20:54
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Sagebrush posted:Yeah, for some reason NASA seems to get the really early versions of every plane. IIRC either their 747 or one of their other B-52s was literally the first one off the line. 747 LN1 was used for testing forever, and is at the Museum of Flight. They did get to use 737 LN1, which is also at the same museum it’s a very good museum, highly recommended
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Apr 2, 2021 21:11
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One day I'll be able to go there.
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Apr 2, 2021 21:25
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Sagebrush posted:Reminds me that one time I was waiting to take off and this guy came in to land They were still using a DC-3 for Flight Check (which is both what those flights are called, and the call sign they use) until two-thousand-and-nine.
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Apr 2, 2021 21:32
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Sagebrush posted:Yeah, for some reason NASA seems to get the really early versions of every plane. IIRC either their 747 or one of their other B-52s was literally the first one off the line. When NASA retired "Balls-8" in 2004, it was simultaneously the oldest B-52 flying and the one with the lowest flight time. I think the 747SP that got converted into SOFIA is close to being the oldest one still flying, since it rolled off the line in 1977, and is one of six 747SP's that hasn't been scrapped.
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Apr 2, 2021 21:36
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