Search found 7653 matches

by fr8mech
Sat Jul 20, 2019 11:45 pm
Forum: Technical/Operations
Topic: Topics for high school chemistry project (IB Chemistry IA) related to aviation?
Replies: 6
Views: 335

Re: Topics for high school chemistry project (IB Chemistry IA) related to aviation?

I was just familiarizing myself with the Nitrogen Generation System (NGS) on some of our aircraft. What happens is a chemical reaction. I'm sure there's plenty of open-source literature about the process.

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by fr8mech
Sat Jul 20, 2019 11:27 pm
Forum: Technical/Operations
Topic: Topics for high school chemistry project (IB Chemistry IA) related to aviation?
Replies: 6
Views: 335

Re: Topics for high school chemistry project (IB Chemistry IA) related to aviation?

*Antifreeze - how it works, how to strengthen, etc Pretty much, not a thing in commercial aviation. I guess you can talk about aluminum alloys and their properties. You can expand on how those properties change based on aircraft environment, e.g. bleed air temperature, exposure to various fluids (b...

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by fr8mech
Sat Jul 20, 2019 12:10 am
Forum: Non-Aviation
Topic: Car Stuck in the Mud due to GPS
Replies: 15
Views: 730

Re: Car Stuck in the Mud due to GPS

I think it is unfair to blame the operator 100%.. Ok, maybe 99% or 98%. In the end, it is the driver's responsibility to ensure that the road he is traveling is suitable. Have I screwed up? Yup, but I never blamed the GPS or the software or whatever, I blamed the person driving the car for not payi...

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by fr8mech
Fri Jul 19, 2019 9:57 am
Forum: Technical/Operations
Topic: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320
Replies: 8
Views: 676

Re: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320

Jouhou wrote:
Do Airbus aircraft actually use US mil spec grease?


Yes, Airbus does use MIL Spec.

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by fr8mech
Thu Jul 18, 2019 11:53 pm
Forum: Non-Aviation
Topic: Car Stuck in the Mud due to GPS
Replies: 15
Views: 730

Re: Car Stuck in the Mud due to GPS

Mapping software does not lead people down muddy paths, people who have little or no awareness of their surroundings do that all by themselves.

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by fr8mech
Thu Jul 18, 2019 11:49 pm
Forum: Technical/Operations
Topic: Recirc Fans/ engine start
Replies: 9
Views: 735

Re: Recirc Fans/ engine start

A quick look at our schematic manuals shows that there is no fan inhibit during engine start (B744, -8, B757/767). I couldn't find it in the engine start procedures for the flight crew, either.

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by fr8mech
Thu Jul 18, 2019 1:59 am
Forum: Technical/Operations
Topic: Combustor, Burner Cans, etc.
Replies: 3
Views: 613

Re: Combustor, Burner Cans, etc.

You can take a look here. It has a high level explanation of combustor arrangement.

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by fr8mech
Thu Jul 18, 2019 1:53 am
Forum: Non-Aviation
Topic: "Illegal Wiretapping" - Passenger plane?
Replies: 2
Views: 524

Re: "Illegal Wiretapping" - Passenger plane?

As I understand it, it is illegal to record anyone without consent, unless it happens in a public place (e.g. filming of a police officer or a crowd of protesters). It really depends on where you are. Around here, a wiretap is perfectly legally as long as at least one of the parties being recorded ...

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by fr8mech
Sun Jul 14, 2019 11:01 am
Forum: Non-Aviation
Topic: Disappearances in American National Parks
Replies: 30
Views: 2337

Re: Disappearances in American National Parks

DeltaWings wrote:

So that leaves 16'242 as an unsignificant number? :lol:


By itself, 16,242 is a large number. In context, it is .005% of the population. So, yes, 16,292 tends to lose it’s significance

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by fr8mech
Sat Jul 13, 2019 10:14 am
Forum: Non-Aviation
Topic: Disappearances in American National Parks
Replies: 30
Views: 2337

Re: Disappearances in American National Parks

I have the stats for 2009 (and 2010), where about 720'000 went missing. But it will be in that range for 2018. https://archives.fbi.gov/archives/about-us/cjis/ncic/ncic-missing-person-and-unidentified-person-statistics-for-2010 I assume you read a little further and found that 703,316 of those 719,...

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by fr8mech
Sat Jul 13, 2019 4:50 am
Forum: Non-Aviation
Topic: Running
Replies: 17
Views: 1030

Re: Running

On the other end of the spectrum (as far as impact goes, anyway), there's trail running. I want to drop a few more kg before I attempt it, but I live in a city surrounded by hills with a couple of hundred trails, and I love hiking and running, so it seems a missed opportunity if I never combine the...

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by fr8mech
Sat Jul 13, 2019 4:14 am
Forum: Technical/Operations
Topic: Retread Tires on Commercial Planes
Replies: 22
Views: 2118

Re: Retread Tires on Commercial Planes

On a 747? (any 747) the aft Body gear tires are the most critical as they're the first to touch down and the last to Leave the ground. Actually, they're probably more critical because they scrub more in turns, especially if the BGS is inop. We did find that 8 & 11 were more frequently changed, ...

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by fr8mech
Sat Jul 13, 2019 1:33 am
Forum: Non-Aviation
Topic: Planned storming of Area 51 9/20
Replies: 82
Views: 5130

Re: Planned storming of Area 51 9/20

My guess: if a large number of these folks try to storm the place, the security forces would use sonic devices for crowd control. I suspect the military has access to stuff that has a little more kick than what police departments have. Then, of course, smoke/chemical irritants can be deployed. I'm t...

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by fr8mech
Fri Jul 12, 2019 9:45 am
Forum: Technical/Operations
Topic: Retread Tires on Commercial Planes
Replies: 22
Views: 2118

Re: Retread Tires on Commercial Planes

I recall a thread where MX people confirmed that tires were in any case the No 1 spare part in terms of inventory rotation...a lot of movement with all that rubber-smoke generation on landing... I looked at some data 15 or so years ago, trying to figure out if any individual tire position on the cl...

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by fr8mech
Fri Jul 12, 2019 8:25 am
Forum: Technical/Operations
Topic: RAT Deployment and ETOPS
Replies: 28
Views: 2296

Re: RAT Deployment and ETOPS

I'm confused. BoeingGuy says the 787 RAT only provides electric power. Is there a dedicated emergency hydraulic pump powered by the RAT electrical supply? According to the training manual I have: The RAT system is powered by a two-blade turbine, which drives an electrical generator and a hydraulic ...

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by fr8mech
Thu Jul 11, 2019 7:30 am
Forum: Non-Aviation
Topic: Running
Replies: 17
Views: 1030

Re: Running

3000 - 3500 cal a day at 210lbs? Wow, no offense, but you must have had to shit like a Clydesdale! The thing is, since I was running and training for various 10K's and Half's, the stuff I was taking in was healthy. Salads, lean meats, fruits & veggies, etc. Just a whole lot of it. The more I ex...

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by fr8mech
Thu Jul 11, 2019 7:21 am
Forum: Technical/Operations
Topic: RAT Deployment and ETOPS
Replies: 28
Views: 2296

Re: RAT Deployment and ETOPS

I got my hands on a B787 GenFam Systems Manual. Looking at 29, the RAT is plumbed into the center system. The center system is powered only by electric pumps. So, loss of an engine would not affect operation of those pumps, unless there is some sort of load shed function. But, methinks, hydraulic pu...

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by fr8mech
Thu Jul 11, 2019 5:48 am
Forum: Non-Aviation
Topic: Ice Cream product tampering
Replies: 13
Views: 1156

Re: Ice Cream product tampering

Good point - the time should fit the crime. I guess what I'm saying is, if she was only slightly older (17), your average Texan would agree she deserves the female equivalent of the Rodney Hulin treatment: https://www.hrw.org/reports/2001/prison/rodney_hulin.html Apples and oranges. Arson vs. tampe...

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by fr8mech
Thu Jul 11, 2019 5:04 am
Forum: Non-Aviation
Topic: Ice Cream product tampering
Replies: 13
Views: 1156

Re: Ice Cream product tampering

16 is not a child. You're right. Legally 16 year olds are children, but realistically, they live in this world between adult and child. They do stupid things, without thinking them through. Add the pressure that social media creates, and you have the potential for stupid things like this. Let's fac...

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by fr8mech
Thu Jul 11, 2019 4:25 am
Forum: Non-Aviation
Topic: Running
Replies: 17
Views: 1030

Re: Running

Yeah no; see, what actually happened was you lost fifty pounds , see. Yes, I lost about 50 pounds, but in the beginning I gained weight. It's actually pretty simple. We call it math. Seriously, I was overweight and started running for weight loss and overall health. My weight started to go up, even...

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by fr8mech
Thu Jul 11, 2019 3:55 am
Forum: Non-Aviation
Topic: Running
Replies: 17
Views: 1030

Re: Running

...sucks and I don't see how people do it for pleasure. Agreed, but you can basically do it anywhere. It grows on you. I started listening to podcasts instead of music, and that made it better. But I have started to do it because i need to lose weight/get faster so I can join the Air Force so I'm m...

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by fr8mech
Thu Jul 11, 2019 12:56 am
Forum: Non-Aviation
Topic: Ice Cream product tampering
Replies: 13
Views: 1156

Re: Ice Cream product tampering

Thank god for tamper seals. Every product should have something like that. Saw an article where Blue Bell, and other ice cream manufacturers, say the process they use to fill and close their product provides a tamper evident seal. They fill the carton, cover it, then freeze the product upside-down....

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by fr8mech
Thu Jul 11, 2019 12:31 am
Forum: Technical/Operations
Topic: FAA to order AoA vane changes on 727/757/767.
Replies: 8
Views: 1927

Re: FAA to order AoA vane changes on 727/757/767.

Hell, we've already got 20% of our fleet complied with, and we started in March, and we plan to be complete by 1Q21.

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by SteelChair
Mon Jul 08, 2019 3:39 pm
Forum: Non-Aviation
Topic: Trump supports Netherlands World Cup
Replies: 40
Views: 2442

Re: Trump supports Netherlands World Cup

Lame. That said, I love how every time she tweets in protest to grab attention she tags it with her clothing line, what a joke. :roll: https://mobile.twitter.com/mpinoe?lang=en Textbook example of manipulation of low information voters. She is only doing what the mainstream media (translation : Dem...

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by fr8mech
Sat Jul 06, 2019 5:08 am
Forum: Non-Aviation
Topic: Gas vs. Charcoal
Replies: 39
Views: 1803

Re: Gas vs. Charcoal

too much fluid. One word: chimney . May favorite is to crank the thing up, sear the beef for a couple of minutes per side, then toss it in an oven for 10-20 depending on how rare you want it. Cover it with foil and let is rest a bit. Tasty. I've done it in reverse. In the oven for 30-40 minutes at ...

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by fr8mech
Fri Jul 05, 2019 6:51 pm
Forum: Non-Aviation
Topic: Gas vs. Charcoal
Replies: 39
Views: 1803

Re: Gas vs. Charcoal

Personally I prefer wood (as in bits of tree,not charcoal) for flavour. Cherry and oak is plentiful in our garden. Having recently also acquired a gas BBQ I also see the benefit to easy cooking outside when you really don't want to heat the house anymore You acquired a "gas grill", not a ...

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by fr8mech
Fri Jul 05, 2019 8:38 am
Forum: Non-Aviation
Topic: Gas vs. Charcoal
Replies: 39
Views: 1803

Re: Gas vs. Charcoal

TSS wrote:
Clarification: When you say "coal" are you referring to charcoal (partially burned wood) or actual coal (fossilized remains of prehistoric swamps)?


Didn't realize that would need clarification. Yes, I cook with either lump charcoal or charcoal briquettes, not the sedimentary rock.

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by fr8mech
Fri Jul 05, 2019 2:44 am
Forum: Non-Aviation
Topic: Gas vs. Charcoal
Replies: 39
Views: 1803

Gas vs. Charcoal

Ok, folks. This burning question needs to be answered, and I can't think of a better place to get more answers, and non-answers, than here. When grilling, do you prefer gas (propane or natural) or charcoal? Certainly, gas is more convenient. Quick and easy to control the temperature. Some say that c...

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by fr8mech
Thu Jul 04, 2019 9:58 am
Forum: Non-Aviation
Topic: Workplace etiquette: nicknames
Replies: 62
Views: 3024

Re: Workplace etiquette: nicknames

I work with two people called Martin, one is known as 'Handsome Martin' and the other is known as 'Martin'. Fred When I worked out on the line, there were 2 fr8mechs on the same crew, and we worked out of the same truck. I was Little fr8mech, since I was younger and shorter, and my partner was Big ...

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by fr8mech
Thu Jul 04, 2019 3:41 am
Forum: Non-Aviation
Topic: Workplace etiquette: nicknames
Replies: 62
Views: 3024

Re: Workplace etiquette: nicknames

You know, part of me says it's an over-reaction, and things like this can be dealt with in an un-official manner. But, the manager part of me knows that the workplace has evolved, much like society has evolved. Things that were normal, no longer are...things that weren't are. We adapt. I call my onl...

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by fr8mech
Wed Jul 03, 2019 8:55 am
Forum: Technical/Operations
Topic: How often does an engine come off?
Replies: 19
Views: 3298

Re: How often does an engine come off?

A slightly different aspect of this. I have heard that airlines sensibly try to have engines at different stages of life on a frame - such that if an life related issue appears it is unlikely to impact both engines. On an long time production frame does that mean an engine swap almost immediately a...

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by fr8mech
Wed Jul 03, 2019 1:18 am
Forum: Technical/Operations
Topic: How often does an engine come off?
Replies: 19
Views: 3298

Re: How often does an engine come off?

I just looked at our PW4158 engines. Our highest time engine (since installation) has been on-wing for 9383 hours and 5973 cycles. It was installed on 9/2010. More than half the installed engines have more than 5000 hours since last removal. We borescope the hot section of the 4158 every 2000 hours ...

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by fr8mech
Wed Jul 03, 2019 12:13 am
Forum: Technical/Operations
Topic: Hot towel service logistics
Replies: 17
Views: 2647

Re: Hot towel service logistics

This is a technical question?? As nws2002 stated above is how it works. Sometimes they add a fragrance as well. No, it's not...it's an operations question. Technical/Operations The more advanced forum for those of you who want to dig deeper into technical issues as well as airline management and op...

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by fr8mech
Mon Jul 01, 2019 8:54 pm
Forum: Technical/Operations
Topic: How often does an engine come off?
Replies: 19
Views: 3298

Re: How often does an engine come off?

I understand that probably all of these are on-condition for overhaul. I am wondering how common FOD is and any other reason for removing an engine as well as typical on-condition time on wing. You can’t predict a FOD event, so you can’t really forecast it, but I’m sure our powerplant engineering g...

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by fr8mech
Sat Jun 29, 2019 10:14 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

The application of the law should be accompanied by some common sense. I have no problem with that. But, do you want a police officer deciding whether or not to arrest someone for felony armed burglary? Personally, I hope officers use discretion, but not when it comes to a serious crime, such as th...

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by fr8mech
Sat Jun 29, 2019 8:28 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

One can argue that he had attempted murder by ramming her back bumper & running her car off the road, and that by taking his guns she was committing an act of self defence. One could argue that, but I assume the "ramming" was addressed by the court by issuing the EPO. A self-defense a...

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by fr8mech
Sat Jun 29, 2019 7:33 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: Florida woman charged after giving husband's guns to police

So rather than answer the question(s), you obfuscate. Deflection. Because you know your position is tenuous, at best.

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by fr8mech
Sat Jun 29, 2019 3:09 am
Forum: Technical/Operations
Topic: Silly question
Replies: 9
Views: 1842

Re: Silly question

I think the OP was also looking to disregard lift in his scenario.

Basically, how fast would an aircraft travel down the "road" given a) tires/under-carriage don't fail, b) there is infinite runway and c) there is no lift produced.

Is there a treadmill involved?

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by fr8mech
Sat Jun 29, 2019 2:24 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

Guns are more important than kids to Republicans. Please stop with the hyperbole. It makes you sound petty, ignorant and childish. While federal law prohibits people under domestic violence restraining orders and convicted of domestic violence from possessing guns, local law enforcement and prosecu...

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by fr8mech
Sat Jun 29, 2019 1:45 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

And she did not feel safe even after telling the proper authorities he had guns AND THEY DID NOTHING. Hmm, do you KNOW that the police chose to do nothing? How much time elapsed? Did she even inform the police or the court that he had guns, before she was arrested for felony burglary? The article i...

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by fr8mech
Sat Jun 29, 2019 1:23 am
Forum: Technical/Operations
Topic: What happens to the broken parts on aircraft after accident investigation is done?
Replies: 28
Views: 3856

Re: What happens to the broken parts on aircraft after accident investigation is done?

Referring to FAA Advisory Circular 20-62E cited in the article above, I don't see an explicit prohibition to using incident/accident parts. There's a statement in the AC that says those parts should be identified as such, but that's about it. I didn't follow any of the FAR citations.

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by fr8mech
Sat Jun 29, 2019 1:11 am
Forum: Technical/Operations
Topic: How often does an engine come off?
Replies: 19
Views: 3298

Re: How often does an engine come off?

I'll go on a limb and say almost all operators of wide-body aircraft change engines "on-condition". The engines are monitored for performance, and the engine is changed when it has deteriorated to unacceptable levels.

Of course, FOD damage will cause an engine to be pulled prematurely.

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by fr8mech
Sat Jun 29, 2019 12:18 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

He was breaking the law by having guns. As I noted right here: What she should have done is notify the police that her husband possessed firearms and was no longer eligible to possess them under 18 USC 922. and here: As soon as the protective order was signed, he was no longer a legal gun owner. Hi...

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by fr8mech
Fri Jun 28, 2019 7:50 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: Florida woman charged after giving husband's guns to police

Why was she charged with armed burglary and not just burglary? She didn't have a weapon on her when she broke in to the apartment (the article didn't mention she did). Because, she became armed when she took the firearms. Is or becomes armed within the dwelling, structure, or conveyance, with explo...

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by fr8mech
Fri Jun 28, 2019 7:34 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: Florida woman charged after giving husband's guns to police

Isn't all property common property once you are married in the US? Does that not give the woman the right to enter her husband's apartment? Or over his guns? That's an interesting question. I suspect there is no US law, it would be Florida law. Near as I can find, Florida is an equitable distributi...

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by fr8mech
Fri Jun 28, 2019 7:11 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

Thanks, appreciate the considered reply. I like doing thought exercises. It keeps me thinking, and intellectually honest with myself. Let's take this a step further. She breaks into her husband's house in order to take his guns. That's burglary...armed burglary, because she now has guns. A felony. ...

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by fr8mech
Fri Jun 28, 2019 6:38 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

from a responsible gun owner. Let's put away the "responsible gun owner" thing. As soon as the protective order was signed, he was no longer a legal gun owner. His only legal course of action was to turn in those firearms. you're trying real hard to make this a gun-control issue. It is no...

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by fr8mech
Fri Jun 28, 2019 6:32 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

Yes I am OK with people taking the law into their own hands. The real question is: Why aren't you? But, I am, in a way: To tell you the truth, I may have acted the same way...or maybe not, But, I'm also willing to accept the consequences if I do break the law. Do you support the castle doctrine? Us...

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by fr8mech
Fri Jun 28, 2019 6:17 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

MaverickM11 wrote:
So, you advocate a "responsible gun owning" domestic abuser murdering his ex wife, as is so often the case?


Can you point out where I said that? Where I indicated that he should be allowed to keep his firearms?

I'll wait.

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by fr8mech
Fri Jun 28, 2019 6:03 am
Forum: Non-Aviation
Topic: Florida woman charged after giving husband's guns to police
Replies: 57
Views: 3675

Re: I know it's Florida, but still

MaverickM11 wrote:
Yah just tell the police--don't worry that gun homicides by intimate partner are mostly directed at women and have been on the rise for years now, while those with other weapons has declined. I'm sure the police will get right on it.


So, you advocate breaking the law?

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