Search found 21461 matches

by DocLightning
Sat Mar 09, 2019 5:47 am
Forum: Technical/Operations
Topic: Inspection for turbulence effect on a commercial aircraft
Replies: 13
Views: 1052

Re: Inspection for turbulence effect on a commercial aircraft

Took a look at our A300 AMM and found the check is only required if the turbulence report is supported by the data from the aircraft. Further the doesn't seem to be as in-depth, though all the accessible areas are inspected. Unless, the flight crew reports excessive lateral loads, that is confirmed...

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by DocLightning
Sat Mar 09, 2019 12:58 am
Forum: Non-Aviation
Topic: Imperial System
Replies: 230
Views: 8891

Re: Imperial System

I seriously doubt that the US will ever fully convert to the metric system. It would be very costly and take years to completely convert. One huge hurdle I see is that changing all of the highway markings and signs to kilometers would be a massively time consuming and expensive undertaking that rea...

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by DocLightning
Sat Mar 09, 2019 12:49 am
Forum: Technical/Operations
Topic: Inspection for turbulence effect on a commercial aircraft
Replies: 13
Views: 1052

Re: Inspection for turbulence effect on a commercial aircraft

fr8mech wrote:
Later, when I get to work, I’ll pull the AMM on one of our planes and expand a little bit, if you’d like.


I would like that if it's not too much trouble. I'd bet some others would, as well. Thanks, fr8mech!

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by DocLightning
Fri Mar 08, 2019 10:16 pm
Forum: Technical/Operations
Topic: Inspection for turbulence effect on a commercial aircraft
Replies: 13
Views: 1052

Re: Inspection for turbulence effect on a commercial aircraft

747Whale wrote:
No, it wouldn't.

There are inspections triggered by certain events, such as severe turbulence, but that's not what you've described.


What happens during a severe turbulence inspection?

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by DocLightning
Fri Mar 08, 2019 10:15 pm
Forum: Travel, Polls & Preferences
Topic: American: Only dogs, cats can be support animals
Replies: 29
Views: 3820

Re: American: Only dogs, cats can be support animals

Seabear wrote:
Guess I'll have to find a pet-sitter for Fluffy (my emotional support Komodo dragon).


Wimp. If it's not a king cobra, you don't really have emotional problems. ;)

Anyway, service is different than support.

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by DocLightning
Fri Mar 08, 2019 10:03 pm
Forum: Civil Aviation
Topic: ERJ 175 Pilots bored out of their minds even on regional flights
Replies: 94
Views: 21102

Re: ERJ 175 Pilots bored out of their minds even on regional flights

When I was aboard a cruise ship as a passenger taking a bridge tour, an ear-splitting alarm went off. A crewman went running to respond to it. When we asked what that was all about, the first officer explained: "That goes off every fifteen minutes and its purpose is to ensure that we are all al...

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by DocLightning
Fri Mar 08, 2019 6:39 pm
Forum: Technical/Operations
Topic: 747-400 vs -800 wind noise
Replies: 23
Views: 5040

Re: 747-400 vs -800 wind noise

I'll describe the takeoff. We pulled onto the runway and I heard the engines quietly spool up (these are GEnX, so they're quiet). As we approached 80kt, the front section started to shudder and a roar came from beneath the floor. I thought the shuddering would stop once the nose lifted, but it did l...

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by DocLightning
Fri Mar 08, 2019 6:30 pm
Forum: Technical/Operations
Topic: Out of Curiosity: Two Different Engines on Same Airframe Safer?
Replies: 24
Views: 3239

Re: Out of Curiosity: Two Different Engines on Same Airframe Safer?

On top of having different weights, different engines will spool up and down at different rates, so you would risk having an unbalanced aircraft and an unbalanced thrust situation. Nuclear powerplants don't need to be symmetrical. Airplanes do need to be symmetrical. Could the latter problem be fixe...

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by DocLightning
Fri Mar 08, 2019 9:20 am
Forum: Technical/Operations
Topic: 747-400 vs -800 wind noise
Replies: 23
Views: 5040

Re: 747-400 vs -800 wind noise

I sat in 1A on the 748i the day before yesterday (amazing experience). The forward cabin is absurdly quiet.* The nose was designed for M=0.9, IIRC.

The flight deck is a different thing.

*Once the gear is up. With the gear down it sounds like someone opened a portal to hell beneath the floor.

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by DocLightning
Fri Mar 08, 2019 8:51 am
Forum: Civil Aviation
Topic: Passengers quarantined at Gatwick after Barbados flight
Replies: 21
Views: 5036

Re: Passengers quarantined at Gatwick after Barbados flight

But only measles would contaminate 100% of the people in a flight of that duration. Is it still the most contagious disease? The evidence-based number is closer to 90% but that's small comfort. And assuming that they were all on a cramped tube for six hours or so, it's likely to be higher than 90% ...

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by DocLightning
Thu Mar 07, 2019 12:23 am
Forum: Technical/Operations
Topic: 787 style windows
Replies: 58
Views: 7706

Re: 787 style windows

It was just a gimmick used by Boeing. I doubt we will see it in anything new again as it’s not really very popular and adds to the cost of maintenance. Plus it’s a real pain in he proverbial when the system fails and passengers are unable to control them on night to day flights. It's lighter and ha...

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by DocLightning
Wed Mar 06, 2019 11:31 pm
Forum: Travel, Polls & Preferences
Topic: Large airports without rail links
Replies: 103
Views: 9336

Re: Large airports without rail links

The people of Detroit continuously vote NO on light rail to and from DTW as well as the region itself. Apparently, the reason is because the project would require an increase in taxpayer money, something in which over 50% of the population in that area either wont use/benefit from, or fund from the...

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by DocLightning
Tue Mar 05, 2019 8:27 pm
Forum: Travel, Polls & Preferences
Topic: LH catering from BLR
Replies: 16
Views: 1066

Re: LH catering from BLR

StormRider wrote:
("unwashed" as apparently nobody in India is aware of the need to wash vegetables/fruits before serving) or pre-packaged bread/cheese/butter/jams etc


The issue is that in India the water may be tainted.

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by DocLightning
Tue Mar 05, 2019 7:42 pm
Forum: Travel, Polls & Preferences
Topic: LH catering from BLR
Replies: 16
Views: 1066

Re: LH catering from BLR

We're taking LH755 and we're in BLR specifically to take LH755 in seats 1A and 1K. We have been in BLR for two hours and all I've eaten here is some bread in the premium lounge. I want to know if I can eat a salad on the flight.

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by DocLightning
Tue Mar 05, 2019 5:00 am
Forum: Travel, Polls & Preferences
Topic: Is the 747 completely gone from your home airport?
Replies: 74
Views: 4089

Re: Is the 747 completely gone from your home airport?

SFO. Fewer, but yes. Even the CI 748. And at OAK MD-11s still climb out over my house.

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by DocLightning
Mon Mar 04, 2019 11:42 pm
Forum: Travel, Polls & Preferences
Topic: LH catering from BLR
Replies: 16
Views: 1066

LH catering from BLR

We're going to be on LH 755 (BLR-FRA).

Does anyone know the catering arrangement? Does LH take their food for the return flight from FRA or do they load catering at BLR? I ask because of health concerns.

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by DocLightning
Mon Mar 04, 2019 11:36 pm
Forum: Travel, Polls & Preferences
Topic: The end of A380 means The end of Suite Class?
Replies: 20
Views: 4604

Re: The end of A380 means The end of Suite Class?

Given that the upper deck of an A380 is roughly equivalent to the main deck of an A330/A340 and given that the lower deck is roughly equivalent to a 747/777, I see no reason why suites can't be installed in those types. It's not as if any airline has introduced a two-floor suite on the A380. Now, EY...

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by DocLightning
Mon Mar 04, 2019 11:31 pm
Forum: Travel, Polls & Preferences
Topic: American Airlines regrets booting mother, baby
Replies: 10
Views: 1715

Re: American Airlines regrets booting mother, baby

How much of it is the airlines fault? EVERY company (especially large ones like AA) have idiots that work for them. This is an example of an idiot. In many cases you don't know someone is an idiot until they are put into a scenario that shows they are an idiot. And each and every employee or contra...

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by DocLightning
Wed Feb 27, 2019 8:01 pm
Forum: Non-Aviation
Topic: Kamala Harris wants prostitution legal I agree
Replies: 28
Views: 2448

Re: Kamala Harris wants prostitution legal I agree

I will point out that prostitution is a state crime. Regulation of prostitution is not one of the enumerated powers of the federal government (although one could see it becoming netted in under the interstate commerce clause if enough states legalize it). It's legal in parts of Nevada. There are cer...

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by DocLightning
Wed Feb 27, 2019 7:35 pm
Forum: Travel, Polls & Preferences
Topic: Why does Southwest have the best boarding process?
Replies: 33
Views: 2179

Re: Why does Southwest have the best boarding process?

The issue with zone/row boarding that usually holds everything up is that multiple people are trying to use the same space at once. So here you are trying to get to your seat just behind the lady with the Winnebago that she's trying to stuff into the overhead bin. Or the confused gentleman who can't...

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by DocLightning
Tue Feb 26, 2019 6:07 am
Forum: Civil Aviation
Topic: Delta Wants to be NMA Launch Customer
Replies: 212
Views: 34790

Re: Delta Wants to be NMA Launch Customer

Boeing really owes it to United to be the launch customer. They've been the only loyal US airline. United is also very low key and doesn't pull silly PR stunts. Loyalty and $3.50 will buy a cup of coffee. Being a launch customer comes with a fair amount of risk. Look at what the launch customers fo...

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by DocLightning
Tue Feb 26, 2019 2:40 am
Forum: Civil Aviation
Topic: Delta Wants to be NMA Launch Customer
Replies: 212
Views: 34790

Re: Delta Wants to be NMA Launch Customer

DL and UA are begging for this. Others as well. A big market and Boeing is sitting in there ass for years. If Boeing doesn’t announce this year, Boeing can’t complain when DL, FI, and UA give Airbus 300 orders. Orders for what? Airbus doesn't have a 763-sized aircraft. I guess DL and UA can order A...

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by DocLightning
Mon Feb 25, 2019 2:55 am
Forum: Civil Aviation
Topic: Atlas Air 3591 Down in Trinity Bay, Texas
Replies: 1727
Views: 387538

Re: Atlas Air 3591 Down in Trinity Bay, Texas

I'm on a cruise right now and there are two guys aboard who overheard me talking about it. Turns out they're both Atlas 767 captains.

RIP to the crew and condolences to their friends, family, and colleagues.

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by DocLightning
Sat Feb 23, 2019 4:20 pm
Forum: Civil Aviation
Topic: 748 Performance in Operations
Replies: 23
Views: 4879

Re: 748 Performance in Operations

SQ22 wrote:
LH never had any options which could have been converted, they had purchase rights.


Can you educate me as to purchase rights vs. options?

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by DocLightning
Fri Feb 22, 2019 8:05 pm
Forum: Technical/Operations
Topic: UA's 787 Fleet Numbers
Replies: 11
Views: 1450

Re: UA's 787 Fleet Numbers

Oh. I thought you were crew. My Bad. Enjoy your stay and thanks for Flying Boeing. It is amazing. By Friday she will be in Paris. https://flightaware.com/live/flight/N20904 I should clear up a point of confusion. On departure, our onboard system showed our destination as CDG. As soon as the captain...

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by DocLightning
Fri Feb 22, 2019 8:36 am
Forum: Technical/Operations
Topic: UA's 787 Fleet Numbers
Replies: 11
Views: 1450

Re: UA's 787 Fleet Numbers

I was on the Boeing delivery center crew for that aircraft. How is she doing? Quite the flight history. Will your duty cycle allow you to lay over in CDG or will you miss that one? I'm a passenger and we were headed to PPT (where I am now). Aircraft seems to be operating just fine. Other than out-o...

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by DocLightning
Fri Feb 22, 2019 2:02 am
Forum: Technical/Operations
Topic: UA's 787 Fleet Numbers
Replies: 11
Views: 1450

UA's 787 Fleet Numbers

Greetings from N20904. We're currently at FL360 on our way from SFO to PPT. N20904 is the first 787 delivered to UA. Why is her ship number 3904 and not 3901? And why does the nose gear door say "0904" and not "3904"? In fact, the entire 787-8 fleet's ship numbers make no sense. ...

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by DocLightning
Wed Feb 20, 2019 3:36 am
Forum: Civil Aviation
Topic: Virgin Atlantic 787 hits 801mph over Pennsylvania
Replies: 39
Views: 13102

Re: Virgin Atlantic 787 hits 801mph over Pennsylvania

In February 2008 I remember seeing a displayed ground speed of 803MPH on a BA 772 operating EWR-LHR. We got there in a bit under 5:30.

A month later, the flight back was just over 8 hours.

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by DocLightning
Mon Feb 18, 2019 10:22 pm
Forum: Civil Aviation
Topic: Will Airbus accept any more A380 orders ?
Replies: 95
Views: 13559

Re: Will Airbus accept any more A380 orders ?

anfromme wrote:
Well, Enders said that there were offers, but those were below production cost. And in that case, it's quite wise to turn down money.


Then you aren't turning down money, are you? You're turning down an expense.

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by DocLightning
Mon Feb 18, 2019 10:20 pm
Forum: Non-Aviation
Topic: Flu shot, cold shot?
Replies: 60
Views: 4692

Re: Flu shot, cold shot?

From your response it seems like you dismiss the importance of building up your immune system? We should just rely in medication and vaccines? Healthy lifestyle is healthy lifestyle and has global benefits. However, you build your immune system by exposing it to antigens against which it can direct...

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by DocLightning
Sat Feb 16, 2019 8:58 pm
Forum: Civil Aviation
Topic: Will Airbus accept any more A380 orders ?
Replies: 95
Views: 13559

Re: Will Airbus accept any more A380 orders ?

In a year, when component manufacturers have closed up shop and perhaps destroyed molds and what-not, then no amount of money will resurrect the program. When the tooling is destroyed, it should be done publicly and the videos put on Youtube for the sole purpose of preventing any "Restart A380...

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by DocLightning
Sat Feb 16, 2019 5:04 pm
Forum: Non-Aviation
Topic: Flu shot, cold shot?
Replies: 60
Views: 4692

Re: Flu shot, cold shot?

After actually reading through this week's cdc report, A.) They made a typo "subclade 3C.2a1 (n=109) or clade 3C.3a (n=138)" I'm pretty sure clade 3C.3a should be 109, 3C.2a1 should be 138. This can be seen in the visualization below. I'd be pretty damn worried if it is as written... Oooh...

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by DocLightning
Sat Feb 16, 2019 12:01 am
Forum: Technical/Operations
Topic: What is the exact definition of a "cycle?"
Replies: 14
Views: 1788

Re: What is the exact definition of a "cycle?"

There are different definitions of cycle. Thank you very much for your comprehensive answer. I had wondered if the industry hadn't just agreed on one simplified definition and accepted that variances to specific components will occur, or whether it was a complex and nuanced question. It appears to ...

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by DocLightning
Fri Feb 15, 2019 11:58 pm
Forum: Non-Aviation
Topic: Flu shot, cold shot?
Replies: 60
Views: 4692

Re: Flu shot, cold shot?

H3N2 is dominating in the US southeast, likely dragging down the vaccine effectiveness estimate for the year. Also Nebraska is seeing mostly H3N2. Everywhere else it's H1N1 closely matching the vaccine strain. I had not heard this. H3N2 is accounting for 20-30% of cases nationally. I wasn't aware t...

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by DocLightning
Fri Feb 15, 2019 7:53 am
Forum: Non-Aviation
Topic: Flu shot, cold shot?
Replies: 60
Views: 4692

Re: Flu shot, cold shot?

I got a flu shot once. It is an overrated experience. If you are young and healthy you don't need one, anyone telling you differently is a very panicky individual. ...or a Board-Certified Pediatrician with two degrees in Molecular Biology who was the TA for the Molecular Virology course at Stanford...

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by DocLightning
Fri Feb 15, 2019 7:33 am
Forum: Non-Aviation
Topic: Flu shot, cold shot?
Replies: 60
Views: 4692

Re: Flu shot, cold shot?

bad news everyone. That flu shot some of us got is less than 50% effective this year . https://www.cnn.com/2019/02/14/health/flu-vaccine-effectiveness-cdc/index.html I think those numbers need to be looked with some nuance. If you're under 50, it's still quite effective at 55-60%. The high-dose tri...

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by DocLightning
Fri Feb 15, 2019 7:27 am
Forum: Civil Aviation
Topic: Will Airbus accept any more A380 orders ?
Replies: 95
Views: 13559

Re: Will Airbus accept any more A380 orders ?

It's done. No more orders. :shakehead: Airlines will have been told - buy now or never. Sadly, from a passenger and A380 fan's perspective they all chose never. I would bet you that if an airline suddenly came running to A with cash in hand TOMORROW and wanted 50 of them, A would figure out a way (...

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by DocLightning
Fri Feb 15, 2019 7:23 am
Forum: Technical/Operations
Topic: What is the exact definition of a "cycle?"
Replies: 14
Views: 1788

Re: What is the exact definition of a "cycle?"

Doc, normally, we count pressurization cycles, though I do believe, as Yikes! mentioned, each touch and go is considered a cycle. Neither landing gear cycles nor engine cycles are counted separately from airframe cycles. So I know that most landing gear components age by cycle, rather than by FH. S...

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by DocLightning
Fri Feb 15, 2019 6:57 am
Forum: Non-Aviation
Topic: California abandons plan for LA-SF HSR; air travel continues to rule the market
Replies: 216
Views: 17661

Re: California abandons plan for LA-SF HSR; air travel continues to rule the market

I remember when they were extending BART down to Millbrae and the airport and the Sierra Club tried to get the entire project scrapped because a community of garter snakes would have to find new homes about a quarter mile away. Actually I'm rather fond of garter snakes... It's so idiotic because th...

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by DocLightning
Fri Feb 15, 2019 6:49 am
Forum: Civil Aviation
Topic: Airbus A350 to have RR Ultrafan Engines from ~2025, Ostrower
Replies: 224
Views: 42416

Re: Airbus A350 to have RR Ultrafan Engines from ~2025, Ostrower

The variable pitch is what set this project apart. So its another GTF engine (soon all the three major players will have GTF engines). The variable pitch was to allow the engine not have thrust reverse doors or clamshells thus saving weight. I think that variable pitch will be the next step. But OM...

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by DocLightning
Fri Feb 15, 2019 6:43 am
Forum: Non-Aviation
Topic: California abandons plan for LA-SF HSR; air travel continues to rule the market
Replies: 216
Views: 17661

Re: California abandons plan for LA-SF HSR; air travel continues to rule the market

Well, now this: https://sf.curbed.com/2019/2/13/18223516/high-speed-rail-newsom-sf-la-canceled-california We do have a market for high-speed rail (or something) between SF and LA. There are 62 flights just from LAX to SFO scheduled tomorrow (61 because AS canceled one). That doesn't even take into a...

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by DocLightning
Fri Feb 15, 2019 6:09 am
Forum: Technical/Operations
Topic: What is the exact definition of a "cycle?"
Replies: 14
Views: 1788

What is the exact definition of a "cycle?"

If an a/c performs a missed approach and raises the gear, does that count as an extra cycle against the gear? Is an aborted takeoff counted as a cycle? Is a touch-and-go counted as a cycle?

I'm just curious.

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by DocLightning
Wed Feb 13, 2019 5:25 am
Forum: Non-Aviation
Topic: Unexpectedly share same stance as Donald Trump
Replies: 25
Views: 1806

Re: Unexpectedly share same stance as Donald Trump

Yes, but there is one problem. If the EU starts doing that, it will immediately gain more active independent foreign policy, and for sure will not align it with the USA. And if the goal here is to get Europeans to buy American arms, this is the last thing they will do. They will invest in their own...

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by DocLightning
Mon Feb 11, 2019 7:23 am
Forum: Non-Aviation
Topic: Unexpectedly share same stance as Donald Trump
Replies: 25
Views: 1806

Re: Unexpectedly share same stance as Donald Trump

One position on which I agree with Mr. Trump is that the USA has shouldered too much of the military financial burden for NATO. Given that the EU has a GDP on the same order of magnitude as the USA, I would expect the EU to contribute a similar amount of resources. However, threatening to withdraw f...

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by DocLightning
Mon Feb 11, 2019 4:03 am
Forum: Non-Aviation
Topic: Hydrogen Fuel Cell Train
Replies: 39
Views: 1530

Re: Hydrogen Fuel Cell Train

Per futurists, it competes with solar and wind electricity which transmits with good efficiency, and batteries which are getting ever cheaper. Better batteries which can be charged faster will be a formidable competitor for hydrogen. That said, hydrogen will have advantages in particular niches, an...

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by DocLightning
Sat Feb 09, 2019 9:26 pm
Forum: Civil Aviation
Topic: BA27 A380 having problems currently.
Replies: 54
Views: 14629

Re: BA27 A380 having problems currently.

This is the first time in my memory that I've heard of a primary flaps malfunction (without something else obviously causing it). What could cause it? What kinds of logic are built in to ensure that the aircraft remains controllable with jammed flaps? Is there logic to prevent the LE slats from retr...

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by DocLightning
Sat Feb 09, 2019 9:18 pm
Forum: Technical/Operations
Topic: NW/DL 744s vs UA 744s
Replies: 39
Views: 3395

Re: NW/DL 744s vs UA 744s

OK, so were there any actual configuration differences between the -422 and the -451? They were the same model with the PW engine offering, but were there any other customer-specific differences?

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by DocLightning
Thu Feb 07, 2019 5:21 am
Forum: Non-Aviation
Topic: Washington Measles Outbreak
Replies: 55
Views: 3847

Re: Washington Measles Outbreak

Is it? California did away with the religious exemption several years ago and the state seems stable enough (for California anyway :boggled: ). A quick Google-machine search turns up that medical exemptions, quite coincidentally of course, have increased. It looks like the elimination of the religi...

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by DocLightning
Mon Feb 04, 2019 2:06 am
Forum: Non-Aviation
Topic: Best Medicine for a Cold
Replies: 28
Views: 1725

Re: Best Medicine for a Cold

Cetirizine (ZYRTEC) has been shown to have some nonspecific antinflammatory properties that may relieve viral upper respiratory infection symptoms. Otherwise, liberal irrigation with saline in the nose and judicious use of antipyretics (acetaminophen/paracetamol and ibuprofen) and decongestants is a...

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by DocLightning
Mon Feb 04, 2019 2:01 am
Forum: Travel, Polls & Preferences
Topic: Attractions at Airports
Replies: 44
Views: 3713

Re: Attractions at Airports

https://dohahamadairport.com/relax/vita ... ess-centre


Oh wow! That's a proper regulation length pool suitable for a serious swimmer to get a workout.
-->

SRQKEF wrote:


Oh wow! That's a proper regulation length pool suitable for a serious swimmer to get a workout.

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