Search found 7581 matches

by fr8mech
Sun May 19, 2019 4:58 pm
Forum: Non-Aviation
Topic: Garbage disposal, interstellar?
Replies: 25
Views: 719

Re: Garbage disposal, interstellar?

Well before we had car/train/plan transportation to know that the world existed way beyond what you see in everyday life, people sent their trash "away" into the rivers since it was carried far away. That didn't work too well and came back to bite us. Isn't this the same thing?? If you ge...

Jump to post
by fr8mech
Sat May 18, 2019 6:05 pm
Forum: Non-Aviation
Topic: Garbage disposal, interstellar?
Replies: 25
Views: 719

Re: Garbage disposal, interstellar?

At several hundred million dollars per garbage truckload? Have you not read my post? :banghead: My post came first and talked about weight, which is the same as cost when it comes to space flight. I was commented on the fact that launching our crap into the sun would be a way of dealing with the pr...

Jump to post
by fr8mech
Sat May 18, 2019 11:04 am
Forum: Non-Aviation
Topic: Garbage disposal, interstellar?
Replies: 25
Views: 719

Re: Garbage disposal, interstellar?

Humanity has to face and learn how to deal with its own shit, that also means learning to reduce all the garbage produced. Otherwise sending it to the Sun would only be a way to avoid the problem. Wouldn’t sending the crap into The Sun be a way that humanity is actually dealing with the problem? Th...

Jump to post
by fr8mech
Sat May 18, 2019 7:22 am
Forum: Non-Aviation
Topic: Where to turn to learn about home buying
Replies: 19
Views: 755

Re: Where to turn to learn about home buying

, so I thought I'd ask the esteemed a.net community for their opinions on whatever books, pamphlets, websites etc. are good ones to turn to as reliable, worthwhile primers for the total American homebuying novice. :boggled: Gracias. Quite simply, the wife and I used whatever edition of Home Buying ...

Jump to post
by fr8mech
Sat May 18, 2019 7:13 am
Forum: Non-Aviation
Topic: Garbage disposal, interstellar?
Replies: 25
Views: 719

Re: Garbage disposal, interstellar?

How much weight do you think those things lift? How much does it cost to lift that weight? How much waste is generated?

Do you see the problem?

Jump to post
by fr8mech
Wed May 15, 2019 2:59 am
Forum: Technical/Operations
Topic: Engine failure question
Replies: 43
Views: 2346

Re: Engine failure question

And another question, can a 737 ferry flight on one engine? Hypothetically, a 737 encounters an uncontained engine failure and the exploded fan disc punctures the fuselage (oxygen decompression), and successfully lands at a small airport that normally doesn’t have jets. But they don’t have equipmen...

Jump to post
by fr8mech
Mon May 13, 2019 6:30 pm
Forum: Technical/Operations
Topic: Closing and Opening of Aircraft Doors
Replies: 14
Views: 2342

Re: Closing and Opening of Aircraft Doors

You know, people do this all the time. Do you pat your wallet or feel for your phone, even though you know it’s there? You’re performing a version of “pointing and calling”. When I finish with the stove, I pass my hand over the controls, even though I can visually verify that the controls are all in...

Jump to post
by fr8mech
Wed May 08, 2019 8:24 pm
Forum: Technical/Operations
Topic: How did O2 work on early 747 upper decks
Replies: 27
Views: 3702

Re: How did O2 work on early 747 upper decks

What's a blow out panel? In this case, it’s a section of the wall panel that is designed to fail in case the area behind it gets pressurized due to some kind of duct leak. It a) provides a visual indication of failure, and b) minimizes the risk of further damage behind the panel. That said, I’m not...

Jump to post
by fr8mech
Wed May 08, 2019 6:09 pm
Forum: Technical/Operations
Topic: How did O2 work on early 747 upper decks
Replies: 27
Views: 3702

Re: How did O2 work on early 747 upper decks

Look at the PSU in the upper-right corner of the image. There’s what appears to be a quarter inch or so hole. That’s where a mechanic would insert a tool...a swizzle stick worked just fine...to open the door and access the masks. Looking at it a little closer, there is another hole, looks like a dim...

Jump to post
by fr8mech
Wed May 08, 2019 5:36 pm
Forum: Technical/Operations
Topic: How did O2 work on early 747 upper decks
Replies: 27
Views: 3702

Re: How did O2 work on early 747 upper decks

There are masks. If you look closely at the PSU in the first picture, you’ll see a faint outline of a door. There were 3(?) masks behind the door. The little hole you see, allowed maintenance to access the masks.

Jump to post
by fr8mech
Tue May 07, 2019 4:19 pm
Forum: Non-Aviation
Topic: How do you even make friends in today's age.
Replies: 60
Views: 3509

Re: How do you even make friends in today's age.

Join a club. I think this is the key. Too many people of the current generation, and the millennials, I think, rely too much on virtual social interaction and not enough on actual social interaction. Whether your cub is a church, a sporting hobby, a school, etc., you'll find like-minded people. Hel...

Jump to post
by fr8mech
Tue May 07, 2019 4:09 pm
Forum: Technical/Operations
Topic: 737Max Storage Question
Replies: 8
Views: 1721

Re: 737Max Storage Question

Then why are they not doing this to all of the aircraft that are stored? Because each carrier, with approval from the regulator and manufacturer have their own way of storing aircraft. For instance, when we "store" an engine, we place desiccant bags in the fan case and exhaust before cove...

Jump to post
by fr8mech
Mon May 06, 2019 6:45 pm
Forum: Non-Aviation
Topic: Sparing the rod?
Replies: 51
Views: 2554

Re: Sparing the rod?

Funny, I just put up a child gate to the kitchen.... We used gates, to great effect, mostly around stairs. But, what's the lesson learned with the gate, if any? Quite simply, I don't feel that a toddler can make the connection between a hot stove and being excluded from the kitchen. I removed her f...

Jump to post
by fr8mech
Sun May 05, 2019 10:48 pm
Forum: Non-Aviation
Topic: Sparing the rod?
Replies: 51
Views: 2554

Re: Sparing the rod?

False dilemma.... You clearly feel that you are right, no sense debating this when you clearly not open to it, So good luck with raising your daughter, hopefully she will be alright and grow up to be a healthy individual. Not a false dilemma, an actual dilemma. Spanking was the “last resort” after ...

Jump to post
by fr8mech
Sun May 05, 2019 10:15 pm
Forum: Non-Aviation
Topic: Sparing the rod?
Replies: 51
Views: 2554

Re: Sparing the rod?

So she wanted to help (= good behavior right) and got a negative massage, even severely negative: got hit. Don't think giving your kid a slab will accomplish anything. Your kid might start to fear you, instead of respecting you and your authority. So, you’re in the “let her severely burn her hand” ...

Jump to post
by fr8mech
Sun May 05, 2019 8:06 pm
Forum: Non-Aviation
Topic: Sparing the rod?
Replies: 51
Views: 2554

Re: Sparing the rod?

If you spank a child, and his/her behavior doesn't change, what do you do? Spank them again? Spank them harder? Spank them longer? That’s that line I was talking about. Eventually, you understand what motivates, and de-motivates your kid, and your kid learns where your line is. I honestly can’t say...

Jump to post
by fr8mech
Sun May 05, 2019 7:24 pm
Forum: Non-Aviation
Topic: Sparing the rod?
Replies: 51
Views: 2554

Re: Sparing the rod?

When my daughter was 3’ish she wanted to “help” me cook. After several, increasingly stern, admonishments, plus a banishment, she finally got a quick spanking. She got the message. Or, maybe I should have let her suffer a 2nd or 3rd degree burn to her hand? There is a place for spanking. Problem is,...

Jump to post
by fr8mech
Sat May 04, 2019 3:22 am
Forum: Technical/Operations
Topic: Storing operational Aircraft Long Term
Replies: 7
Views: 1126

Re: Storing operational Aircraft Long Term

If I take a B737/A340/CJ700, and prepare it for storage in a reasonable way, and then wait 2 years, and then come back and do minor maintenance and fluid replacement, can I fly the plane? How long becomes too long? The maintenance you do before, during and after the storage period should be spelled...

Jump to post
by fr8mech
Sat Apr 27, 2019 5:34 am
Forum: Technical/Operations
Topic: Hangar queens, still a thing ?
Replies: 34
Views: 5177

Re: Hangar queens, still a thing ?

Interesting, do you ever get to the point where a particular airframe is so problematic you just start using it for parts ? No, aircraft are expensive. We fix them and fly them. If we have a problematic aircraft, we program some ground time, and build a work package for it, based on the problems we...

Jump to post
by fr8mech
Sat Apr 27, 2019 2:08 am
Forum: Travel, Polls & Preferences
Topic: When is "Arrival"
Replies: 18
Views: 2724

Re: When is "Arrival"

SRQKEF wrote:
They don’t. The time the aircraft touches down doesn’t matter when it comes to on-time performance, it’s all about “blocks on” time.


Point of order..."block on" is the landing time, "block in" is the arrival time.

Jump to post
by fr8mech
Sat Apr 27, 2019 1:54 am
Forum: Technical/Operations
Topic: Hangar queens, still a thing ?
Replies: 34
Views: 5177

Re: Hangar queens, still a thing ?

Yup, of course they exist. It's not a particular fleet-type, just a few tails, across the fleet, that seem to be our "least-best". Disappointingly, one of those tails is about 6 months old with about 1500 hours. But, it's getting better. You know an aircraft is a "hangar queen" w...

Jump to post
by fr8mech
Thu Apr 25, 2019 2:04 am
Forum: Technical/Operations
Topic: Curiosity about pre delivery vertical stabilizer
Replies: 16
Views: 2674

Re: Curiosity about pre delivery vertical stabilizer

How are they balanced as installed? Just happened to read through the engineering document for painting the aircraft. In real simple terms, it's done through calculations. You measure the average thickness of the paint before removal, then again after paint installation. Then you do the math. Refer...

Jump to post
by fr8mech
Thu Apr 25, 2019 12:04 am
Forum: Technical/Operations
Topic: Curiosity about pre delivery vertical stabilizer
Replies: 16
Views: 2674

Re: Curiosity about pre delivery vertical stabilizer

If they repaint it while mounted, they probably remove it after and rebalance it. No. At least we don't after a paint visit. Why don't they have to remove the rudder for repainting then? Doc, the SRM (structural repair manual) provides procedures for balancing the rudder while on the aircraft. I su...

Jump to post
by fr8mech
Wed Apr 24, 2019 5:53 pm
Forum: Technical/Operations
Topic: 767-300 (non-ER) Transatlantic
Replies: 28
Views: 3003

Re: 767-300 (non-ER) Transatlantic

There are a few other issues as well, not mentioned. It is not just the physical capabilities of the airframe. Depending on where the aircraft flies, it requires other equipment. Like HF radios, CPDLC/ADS, 8.33 KHz channel spacing. Some of this is for operations in New York/Gander/Shanwick Oceanic ...

Jump to post
by fr8mech
Wed Apr 24, 2019 5:59 am
Forum: Technical/Operations
Topic: 767-300 (non-ER) Transatlantic
Replies: 28
Views: 3003

Re: 767-300 (non-ER) Transatlantic

Any reason that a non-ETOPS B767 couldn't make the trip flying a non-ETOPS route? We rarely do it, and we're certainly not fans of doing it, but we have done it in the past.

Jump to post
by fr8mech
Sat Apr 20, 2019 12:09 am
Forum: Technical/Operations
Topic: Staying on the centre line
Replies: 33
Views: 4540

Re: Staying on the centre line

Yes, but you aren't going to be steering with the tiller during the take-off roll or the landing roll, which is what the original question was asking. True, but I wasn't replying to the op at this point, I was responding to the comment/statement/assertion that: It's all manual using rudder and, it ...

Jump to post
by fr8mech
Fri Apr 19, 2019 7:53 am
Forum: Technical/Operations
Topic: Staying on the centre line
Replies: 33
Views: 4540

Re: Staying on the centre line

It's all manual using rudder. And you certainly *can* feel it sometimes, even in an airliner. It depends on the winds and the pilot. I have felt like the plane was going to turn over on some takeoffs and landings. No, it is not all manual using rudder. Airliners have nose wheel steering that can be...

Jump to post
by fr8mech
Thu Apr 18, 2019 11:55 am
Forum: Technical/Operations
Topic: Quad engines and reverse thrust use
Replies: 42
Views: 3644

Re: Quad engines and reverse thrust use

Legs wrote:

Funny, for the large quad I work on (albeit a military one), the book dictates that if one thrust reverser is inoperative, its symmetric paired engines reverser must be locked out, with an adjustment to the landing roll.



4 installed, 3 required on the B747.

Jump to post
by fr8mech
Thu Apr 18, 2019 10:20 am
Forum: Technical/Operations
Topic: Staying on the centre line
Replies: 33
Views: 4540

Re: Staying on the centre line

Do the wheels lock on a particular heading? The steering system keeps the nose wheels centered, but they are not locked. The flight crew uses the rudder pedal steering system to make small adjustments. As the aircraft speeds up, the rudder begins to gain authority. If the pilot were to sneeze and j...

Jump to post
by fr8mech
Thu Apr 18, 2019 9:22 am
Forum: Technical/Operations
Topic: Mode S transponder ID
Replies: 10
Views: 1475

Re: Mode S transponder ID

It’s assigned by the country that the aircraft is registered in. It is programmed into the unit. The unique address is assigned to the aircraft, if a transponder is replaced it needs to be programmed with the correct id. Essentially not a lot of difference between a light aircraft transponder and a...

Jump to post
by fr8mech
Wed Apr 17, 2019 2:13 am
Forum: Technical/Operations
Topic: Feeder Airlines In Major Carrier Colors: Why?
Replies: 4
Views: 1631

Re: Feeder Airlines In Major Carrier Colors: Why?

It's almost certainly contractual.

From a customer perspective, it's a continuity thing. AA from end-to-end, who really reads the "dba" or "operated by" line anyway?

Jump to post
by fr8mech
Mon Apr 15, 2019 6:23 pm
Forum: Non-Aviation
Topic: Notre-Dame cathedral on fire in Paris
Replies: 101
Views: 9057

Re: Notre-Dame cathedral on fire in Paris

Trump just tweeted: "Perhaps flying water tankers could be used to put it out. Must act quickly!" I'm sure that will work! And it will work wonders for all the fragile manuscripts in the edifice... :roll: Back when I was on the fire department, we were doing a walk-through and updating ou...

Jump to post
by fr8mech
Sun Apr 14, 2019 11:25 pm
Forum: Technical/Operations
Topic: DC8 55F main cargo door
Replies: 12
Views: 3122

Re: DC8 55F main cargo door

It’s been nearly 30 years since my DC-8 days, but I am pretty sure you need AC (ground power) to operate the door pump. There was a manual way to “pump” the door up IIRC. The door can be pumped open, but there is an isolation valve in the system. I can’t remember if the valve is on the battery bus,...

Jump to post
by fr8mech
Fri Apr 12, 2019 1:01 am
Forum: Technical/Operations
Topic: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?
Replies: 24
Views: 3888

Re: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?

trpmb6 wrote:
Yes, I also thought you got the added benefit of them wanting to return to neutral under their own weight.


Just out of curiosity, I checked the MD11 SRM, and found that both inboard and outboard elevators are balanced to be tail-heavy.

Jump to post
by fr8mech
Thu Apr 11, 2019 2:13 am
Forum: Technical/Operations
Topic: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?
Replies: 24
Views: 3888

Re: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?

trpmb6 wrote:
I take it this was before balance weights became required which would keep aileron/elevators in neutral position?


They are not balanced to keep them in the neutral position, they are balanced to prevent aerodynamic flutter.

Jump to post
by fr8mech
Wed Apr 10, 2019 8:31 am
Forum: Technical/Operations
Topic: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?
Replies: 24
Views: 3888

Re: Why do MD-80s lock their horizontal stabilizer in an upright position at the gate?

Dear Dalmd88, This triggers one question from my side: How would MadDog pilots perform the control check on the elevator then? In case the free floating elevator plane was stuck, the control column and the tabs would still be moving freely and the pilots would not notice the problem by the means of...

Jump to post
by fr8mech
Sun Apr 07, 2019 2:17 pm
Forum: Technical/Operations
Topic: Engineers, miss it or glad those days are gone.
Replies: 28
Views: 4589

Re: Engineers, miss it or glad those days are gone.

Of course. The engineer was "replaced" by advanced aircraft systems such as ECAM and EICAS, which tell pilots concisely what is going on. Another aspect is telemetry. Engineering for most large operations is only a satcom call away and they can diagnose many things in real time while we a...

Jump to post
by fr8mech
Sun Apr 07, 2019 12:41 am
Forum: Technical/Operations
Topic: Engineers, miss it or glad those days are gone.
Replies: 28
Views: 4589

Re: Engineers, miss it or glad those days are gone.

Meaning no insult, but the FE, at least those without front seat aspirations, were much more knowledgeable about aircraft systems. He, and the occasional she, would typically provide very detailed and concise write-ups when the aircraft was doing something strange.

Jump to post
by fr8mech
Fri Apr 05, 2019 12:17 am
Forum: Technical/Operations
Topic: How many aircraft are out of service at one time in a major airline ?
Replies: 13
Views: 2025

Re: How many aircraft are out of service at one time in a major airline ?

Max Q wrote:

I’m more interested in aircraft that are in
major maintenance/ overhaul and reconfiguration rather than being out of service temporarily while an issue is rectified


We run about 8% with that number tapering off to 0% from late November to late December. We probably spike to 10-12% in January.

Jump to post
by fr8mech
Sat Mar 30, 2019 9:23 am
Forum: Non-Aviation
Topic: Arithmetic and the undefined...
Replies: 26
Views: 2073

Re: Arithmetic and the undefined...

Airstud wrote:
By multiplying the operands and adding the first one to the product; yep I saw that perspective as well.


No multiplication, no division, just addition.

Jump to post
by fr8mech
Sat Mar 30, 2019 9:14 am
Forum: Non-Aviation
Topic: Arithmetic and the undefined...
Replies: 26
Views: 2073

Re: Arithmetic and the undefined...

Ok, I'll play.

No one said this was an infinite sequence, therefore it is safe to assume, as far as I'm concerned, that the sequence starts with the first expression and ends with the last expression. Therefore, undefined is not an issue.

The correct answer is: 45

Jump to post
by fr8mech
Sat Mar 30, 2019 5:34 am
Forum: Non-Aviation
Topic: How did you get interested in Aviation?
Replies: 17
Views: 1235

Re: How did you get interested in Aviation?

Spent summers (mid-70's to late 80's) watching air operations at ATH (Hellenikon International) from my aunt & uncle's porch. Their house had an unobstructed view of the approach end of the 15L & R. Memories of watching Pan Am, Olympic & TWA B747's landing, then the sound of the engines ...

Jump to post
by fr8mech
Sat Mar 30, 2019 2:38 am
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2766

Re: Electric nose wheels

It is not the case that since we don't see them now, they must not be a good idea. That would have also argued against winglets during the 1980s. Your logic is flawed. Winglets, and other wingtip enhancements, have a proven benefit against their costs. My conclusion from reading what everyone poste...

Jump to post
by fr8mech
Tue Mar 26, 2019 2:19 am
Forum: Technical/Operations
Topic: Research questions about airline maintenance
Replies: 8
Views: 1083

Re: Research questions about airline maintenance

1) Do the larger airlines typically own their own hangars at major airpors (I'm calling them hangars, but maybe that's not the right term... buildings they bring planes into for maintenance) or are they sort of a shared use facility? It is the right term, and you’re actually spelling correctly. :sm...

Jump to post
by fr8mech
Mon Mar 25, 2019 6:39 pm
Forum: Non-Aviation
Topic: Do we need Communism in US?
Replies: 141
Views: 8760

Re: Do we need Communism in US?

Most people don't know what's good for them nor for the greater good. Hence why we have Brexit, Trump, etc. And corporate America exploits that unfortunate fact. The government should mandate that retailers be closed on all major holidays as they are in Europe. And, that's it right there. You are a...

Jump to post
by fr8mech
Mon Mar 25, 2019 2:48 pm
Forum: Non-Aviation
Topic: Do we need Communism in US?
Replies: 141
Views: 8760

Re: Do we need Communism in US?

I actually was a history major in college (doubled with political science). History is taught with a bias in AmeriKKKa, always demonizing anything that isn't capitalist nor imperialist. So you chose to get a degree in a field where you knew the instructors would lie to you. Most airlines aren't an ...

Jump to post
by fr8mech
Sun Mar 24, 2019 11:54 pm
Forum: Technical/Operations
Topic: Metal rod through windshield
Replies: 5
Views: 1255

Re: Metal rod through windshield

Would have been nice to see a picture of it after it was removed from the windshield, but it doesn’t look aircraft related. At least not air transport.

Jump to post
by fr8mech
Sun Mar 24, 2019 2:28 pm
Forum: Non-Aviation
Topic: Do we need Communism in US?
Replies: 141
Views: 8760

Re: Do we need Communism in US?

continental004 wrote:
I would rather live under communism than in our twisted capitalist society of the United States of AmeriKKKa.


Have you lived in a communist country? Or, are you just blathering about from ignorance? Please, read a history book.

Jump to post
by fr8mech
Sun Mar 24, 2019 12:19 pm
Forum: Technical/Operations
Topic: Research questions about airline maintenance
Replies: 8
Views: 1083

Re: Research questions about airline maintenance

Just some general questions, more research for my writing project. Assumptions: You are an airline mechanic/technician supervisor for an airline large enough to have its own in house maintenance. The era is late 1980s, if it matters. I worked for 3 airlines in the 80’s. Pan Am, Delta & Evergree...

Jump to post