Search found 12339 matches

by zeke
Fri Jul 20, 2018 6:42 am
Forum: Technical/Operations
Topic: Is it common practice to use derated takeoffs in snow/icy conditions?
Replies: 29
Views: 1600

Re: Is it common practice to use derated takeoffs in snow/icy conditions?

If you select a fixed derate on a FBW Airbus, how do you set thrust for takeoff? Do you put the thrust levels in the second detent - before full TO/GA - just like you do for Flex Power? The only difference is what takeoff thrust setting you selected in the FMC? Exactly the same as Fkex, instead of ...

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by zeke
Thu Jul 19, 2018 2:43 pm
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA

Slightly off topic: But do other people find CX J service lacking? Last time I flew the crew forgot to distribute menus, then they forgot to ask half of the cabin what they wanted. People were sitting with their menus on their laps for ages. Then they forgot to collect the menus, and forgot the bri...

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by zeke
Thu Jul 19, 2018 8:38 am
Forum: Technical/Operations
Topic: Is it common practice to use derated takeoffs in snow/icy conditions?
Replies: 29
Views: 1600

Re: Is it common practice to use derated takeoffs in snow/icy conditions?

Sound like it works more like the 737 than other Boeing models. Sounds like you are selecting an actual derated rating like 24,000 lbs. The other models just select a percentage derate, usually 10% and 20%. When derated takeoff is available, 6 certified levels exist, ranging from D04 (TOGA-4%) to D...

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by zeke
Thu Jul 19, 2018 6:12 am
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City

I won't be surprised if CX starts SEA. However, how do you get April 1? Is there some indication somewhere that CX is going to start SEA on 4/1 next year? Earlier in the thread I said SEA would be an April fools joke, the first SEA-HKG flight CX857 (1/3/5/7) will start April 1. First HKG-SEA willl ...

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by zeke
Wed Jul 18, 2018 4:47 pm
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City

Cathay777300ER wrote:
I think it's unlikely to be Miami as the CX adverts on facebook for Washington DC mention that it's going to be their longest flight.


When it starts that will be correct, right up until a longer route comes along. If and or when that ever happens.

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by zeke
Wed Jul 18, 2018 1:23 pm
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City

jbs2886 wrote:
I’m going to save this post.


I hope you do, and you will then know I was correct.

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by zeke
Wed Jul 18, 2018 11:39 am
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City

Will not be MIA. The city doesn't have a non-stop to even Japan. Moreover, MIA-HKG is more than 800km further than even SFO-SIN, and out of range from A359. I'm thinking IAH or SEA, more likely IAH. MIA is not out of range for the 359. SFO-SIN is actually a longer flight time than MIA-HKG. The SFO-...

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by zeke
Wed Jul 18, 2018 9:47 am
Forum: Civil Aviation
Topic: Cathay Pacific Hints At New US City Update: Confirms HKG-SEA
Replies: 175
Views: 19574

Re: Cathay Pacific Hints At New US City

TransWorldOne wrote:
With DL leaving HKG, this would be the perfect time for CX to start SEA.


SEA would be an April Fools Joke.

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by zeke
Wed Jul 18, 2018 9:02 am
Forum: Technical/Operations
Topic: Is it common practice to use derated takeoffs in snow/icy conditions?
Replies: 29
Views: 1600

Re: Is it common practice to use derated takeoffs in snow/icy conditions?

Quoting BoeingGuy (Reply # 8), " . . . Airbus has Flex (Assumed Temperature) thrust reductions. Do they also have fixed derates?" BoeingGuy, I have seen previously from reading another thread that on the Airbus narrowbody series (A319/A320/A321) with CFM56-5A5, CFM56-5-A1 and A3, and CFM5...

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by zeke
Sat Jul 14, 2018 10:05 pm
Forum: Civil Aviation
Topic: Air China pilots depressurize plane accidentally to smoke in cockpit
Replies: 32
Views: 9172

Re: Air China pilots depressurize plane accidentally to smoke in cockpit

Local paper was saying both plots fired from Air China.

“Co-pilot was smoking a e-cigarette without the Captain knowing” (I don’t believe)

Wanted to turn the fans off, turn something else off instead next to it.

CAAC will investigate, possibly loss of licence and other penalties.

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by zeke
Tue Jul 10, 2018 12:17 am
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

Stitch wrote:
[
The A320 and A330/A340 RLI have expired and been fully repaid.


RLI royality payments continue regardless if the initial investment value has been fully repaid. For some programs the initial investment amount has been fully repaid a number of times over.

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by zeke
Mon Jul 09, 2018 6:27 pm
Forum: Technical/Operations
Topic: A333 DOW
Replies: 2
Views: 440

Re: A333 DOW

DOW depends on catering and IFE, maybe they had little to no catering. I do not think they have IFE either.

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by zeke
Mon Jul 09, 2018 6:13 pm
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

Significant detauls of RLI can be found in the various WTO submissions (it would take weeks to go through). It is not the topic of this thread.

The false claim that not a dime of A380 development costs has been paid has been shown to be clearly false. A dime is a very low bar of proof required.

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by zeke
Mon Jul 09, 2018 4:42 pm
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

First, do we know that Airbus includes RLI as production cost in its accounting? As others have pointed out, RLI is a liability that exists whether it's paid from royalties or not. A past liability that is independent of production shouldn't be counted as a production cost. That it's paid simultane...

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by zeke
Mon Jul 09, 2018 11:50 am
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

And sure Airbus will be making money on aftermarket services, but I doubt that the profits on that part of the business will be enough to get the program to break even if Airbus would have used program accounting. Airbus already makes more per year in after market support for its aircraft than it s...

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by zeke
Mon Jul 09, 2018 10:45 am
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

Matt6461 isn't talking about the state support for the A380. The RLI payments are actually adding to the overall program losses for Airbus. It's just another cost that they cannot book as profit. That is not what he said, he said it has not paid back any development costs which is clearly incorrect...

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by zeke
Mon Jul 09, 2018 8:26 am
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

Matt6461 wrote:
It has never repaid and probably will never repay a dime of its development cost.


Hogwash, every airframe sold Airbus repaid RLI, just like it continues to do also with the A320/A330/A350.

Every aircraft sold risk sharing partners were paid for the components.

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by zeke
Sun Jul 08, 2018 8:42 am
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

https://leehamnews.com/2018/06/18/vla-era-is-over-are-777x-a350-1000-too-large/ Story is behind a paywall; this isn't one of my catch-up on Leeham premium months, but the broad argument is in the summary. I don't disagree that VLA's aren't selling well, obviously. The 748i and A388 are terrible pro...

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by zeke
Sun Jul 08, 2018 7:18 am
Forum: Technical/Operations
Topic: How does the lack of crosswind runways at airports without them not cause issues?
Replies: 23
Views: 2544

Re: How does the lack of crosswind runways at airports without them not cause issues?

Yes, but also, these airports tend to be in places where strong crosswinds are relatively uncommon. LAX’s “odd” winds are Santa Ana winds, almost straight down the 6s and 7s. That is not(knot) the real reason, above 40 kts you run into issues with opening doors and the safety of ramp staff. A lot o...

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by zeke
Sun Jul 08, 2018 1:20 am
Forum: Technical/Operations
Topic: How does the lack of crosswind runways at airports without them not cause issues?
Replies: 23
Views: 2544

Re: How does the lack of crosswind runways at airports without them not cause issues?

The big girls and boys flying their aircraft in and out of those locations obviously know how to use a crosswind technique.

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by zeke
Sat Jul 07, 2018 11:33 pm
Forum: Technical/Operations
Topic: British Airways cancelled my flight because holes in plane after lightning strike
Replies: 24
Views: 4146

Re: British airways cancelled my fligh because holes in plane after lightning strike !

https://en.m.wikipedia.org/wiki/Lightning
-->

It is obvious, the aircraft was struck by lightning multiple times, these areas were discovered during the transit requiring further maintenance.

https://en.m.wikipedia.org/wiki/Lightning

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by zeke
Sat Jul 07, 2018 6:48 am
Forum: Civil Aviation
Topic: Airbus delivers first 280t a350 to Iberia
Replies: 55
Views: 13720

Re: Airbus delivers first 280t a350 to Iberia

Yes I ran the actual numbers when MEX announced the new longer runway recently.

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by zeke
Sat Jul 07, 2018 5:03 am
Forum: Civil Aviation
Topic: Airbus delivers first 280t a350 to Iberia
Replies: 55
Views: 13720

Re: Airbus delivers first 280t a350 to Iberia

In the current MEX airport the A359 can take off at 250 Tons (to be increased to ~260 Tons when the new MEX opens). The OEW of the A359 should be around 145 Tons, 348 passengers translates to 33 Tons, leaving 72 tons for fuel that in a very rough estimate should amount to a range of 5,600 NM. MEX-M...

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by zeke
Sat Jul 07, 2018 1:45 am
Forum: Civil Aviation
Topic: Is HKG overcapacity?
Replies: 8
Views: 2030

Re: Is HKG overcapacity?

HKG would have to be one of the most competitive hubs in the world with over 100 airlines. An airline like DL has proven time and again it cannot compete, they usually blame everyone else for their problems, be it the government taxing them too much to foreign airline subsidy. In reality DL has a lo...

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by zeke
Fri Jul 06, 2018 9:06 am
Forum: Technical/Operations
Topic: Airbus A350 Toilet Issue
Replies: 9
Views: 1597

Re: Airbus A350 Toilet Issue

The four “issues” I am aware of with A350s lavatories are the mirror cracking due to normal fuselage movement, soap dispenser not working, the indicator outside the door not going from green to red to show it is in use, and the light not coming on when the door is locked. Typical minor quirks with a...

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by zeke
Thu Jul 05, 2018 10:00 pm
Forum: Technical/Operations
Topic: Airbus A350 Toilet Issue
Replies: 9
Views: 1597

Re: Airbus A350 Toilet Issue

Obviously written by someone who has never set foot inside an A350.

As far as the OPs question, could I suggest it may have been the same aircraft. I am not aware of any issue with that location across the fleet.

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by zeke
Wed Jul 04, 2018 3:07 am
Forum: Technical/Operations
Topic: Flights over the North Pole (question)
Replies: 9
Views: 1215

Re: Flights over the North Pole (question)

There are numerous flights both daily and weekly that use the Polar Route Structure for their flight plans. Not all pass directly over the pole but within 200NM or less. This subject has been discussed before on ANet so you might want to do search to expand your knowledge base. Much closer than tha...

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by zeke
Wed Jul 04, 2018 3:00 am
Forum: Technical/Operations
Topic: Flights over the North Pole (question)
Replies: 9
Views: 1215

Re: Flights over the North Pole (question)

There are numerous flights both daily and weekly that use the Polar Route Structure for their flight plans. Not all pass directly over the pole but within 200NM or less. This subject has been discussed before on ANet so you might want to do search to expand your knowledge base. The closest waypoint...

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by zeke
Wed Jul 04, 2018 2:33 am
Forum: Civil Aviation
Topic: FAA: Seat size not their concern
Replies: 124
Views: 12862

Re: FAA: Seat size not their concern

Didn’t we have a thread recently about the DOT auditing the FAA over their evacuation certification?

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by zeke
Mon Jul 02, 2018 2:52 pm
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

Whoever in Airbus marketing came to that strange "4 times less noise", he will have based that on an input from somewhere expressed in dB or rather dB(A). And he found a difference in dB that he tried to translate into "real world numbers", but he did that very, well at least mi...

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by zeke
Mon Jul 02, 2018 1:49 pm
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

That is not the point! You made a completely wrong calculation that turned a factor 4 of something into a 0.6 dB difference. That is complete nonsense, and you seem still not to understand why. Therefore I will ignore the rest of your post, it is based on wrong assumptions. And that has nothing to ...

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by zeke
Mon Jul 02, 2018 1:23 pm
Forum: Technical/Operations
Topic: What does ground scanning mean?
Replies: 8
Views: 1617

Re: What does ground scanning mean?

we were practicing some troubleshooting procedure , where its says do ground scanning and refered some reference. What does this ground scanning means? On the Airbus using the CFDS ground scanning tests various systems and computers, it is like providing the system/computer with known fake inputs v...

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by zeke
Mon Jul 02, 2018 1:14 pm
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

I can look wherever I want, the difference between 55 dB and 55.6 dB is nowhere even close to 4 times of anything related to noise. They said it is quieter !!! You need to take your engineers hat off and understand the “up to” numbers probably have nothing to do with the underlying physics and ever...

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by zeke
Mon Jul 02, 2018 12:40 pm
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

https://www.expatica.com/de/insider-vie ... 04308.html
-->

masi1157 wrote:
No! That one is not a possible interpretation, it is just wrong.


That is because of the way you were brought up, try thinking a little left or right .....

https://www.expatica.com/de/insider-vie ... 04308.html

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by zeke
Mon Jul 02, 2018 12:21 pm
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

You know the definition of sound pressure level? Sure, I understand the difference between acoustic power, sound intensity, and sound pressure. Sound pressure level is the sounds pressure referenced normally to 2x10^-5 N/m^2, the nominal sensitivity of the human ear at 1000 Hz (but purists say it s...

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by zeke
Mon Jul 02, 2018 11:27 am
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

So when an Airbus expert on cabin noise tells you that "up to 4 times less noise" is a pretty meaningless statement, you still don't care? No, I know they would have measured it to come up with the statement, but would a human actually be able to tell the difference, doubtful. Much like t...

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by zeke
Mon Jul 02, 2018 11:15 am
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

zeke: When it comes to piloting, I listen to what you say, knowing that you're a professional pilot. I know that I can learn from your insight. As far as I know, cabin noise is masi1157's profession, so maybe you can lean something from him...? (Looking at your decibel calculations, I'm pretty sure...

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by zeke
Mon Jul 02, 2018 10:57 am
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

A factor 4 in sound pressure would mean a 12 dB difference. A factor 4 in sound power (resp. sound intensity or, in a reverberant field like an aircraft cabin, sound energy density) means 6 dB. A factor 4 in noise perception (by humans) would require almost 20 dB. I am afraid somebody mistook a 6 d...

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by zeke
Mon Jul 02, 2018 10:11 am
Forum: Civil Aviation
Topic: Airbus Claims that A350XWB is quieter than B787, but is it really?
Replies: 224
Views: 30163

Re: Airbus Claims that A350XWB is quieter than B787, but is it really?

lol yes... I was wondering what that could mean - I was thinking maybe "4 times less" could mean -12 dB, but it's just weird. Maybe it's a bad translation from French, and they meant to say that there is less noise in the cabin up to 4 times during a flight. (At the gate, during taxiing, ...

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by zeke
Sun Jul 01, 2018 1:52 pm
Forum: Technical/Operations
Topic: Why the different flight routings from LAX to DOH, ABU and DXB?
Replies: 8
Views: 1019

Re: Why the different flight routings from LAX to DOH, ABU and DXB?

hotelmode wrote:
The 380 will be a lot higher a lot earlier than the 777. This could totally change the best routing. You'll see the same even within the same airline where the type is different.


That would be my guess, EK A380 is above the polar jet and the 777 cruises lower in it.

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by zeke
Sat Jun 30, 2018 11:38 am
Forum: Technical/Operations
Topic: Flashing FA call lights? A321
Replies: 7
Views: 1033

Re: Flashing FA call lights? A231

Lucky prize winners

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by zeke
Thu Jun 28, 2018 3:36 pm
Forum: Technical/Operations
Topic: Effect of worldwide ADS-B
Replies: 6
Views: 1148

Re: Effect of worldwide ADS-B

https://www.icao.int/airnavigation/pbcs ... ault.aspx/
-->

Worldwide PBCS would be the largest improvement to safety and economy as per the OP question.

https://www.icao.int/airnavigation/pbcs ... ault.aspx/

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by zeke
Thu Jun 28, 2018 3:05 pm
Forum: Technical/Operations
Topic: Effect of worldwide ADS-B
Replies: 6
Views: 1148

Re: Effect of worldwide ADS-B

Worldwide PBCS

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by zeke
Tue Jun 26, 2018 11:06 pm
Forum: Civil Aviation
Topic: CX to MEX?
Replies: 37
Views: 5232

Re: CX to MEX?

No - the length of the runway is not the issue here. Long runways end up hitting tire speed limits, so a super long runway is not going to make a big difference. The A359 is limited to around 250 tonnes out of MEX, and that is due to second segment requirements. It is a long way off being tyre spee...

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by zeke
Tue Jun 26, 2018 1:42 pm
Forum: Military Aviation & Space Flight
Topic: A330neo tanker
Replies: 44
Views: 3577

Re: A330neo tanker

The A30N has been on a diet. As such, one area weight was removed was the A340 structure that remained as the wing was dual-purpose. This area was used to mount the refuelling pods as the A330 doesn't have outboard engines or the 'plastrons' that the A340 needed. The points were readymade reinforce...

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by zeke
Mon Jun 25, 2018 9:15 am
Forum: Civil Aviation
Topic: QR to dump entire A330F fleet, favors 777F
Replies: 53
Views: 12206

Re: QR to dump entire A330F fleet, favors 777F

Well Ramadan is a reason why carriers in the region park aircraft every year. And it is also undisputed that the State of Qatar does not have a lot of regional friends at the moment. So they are replacing 3 regional aircraft with 3 long haul aircraft. Doesn’t that point more to them looking at diffe...

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by zeke
Mon Jun 25, 2018 8:16 am
Forum: Civil Aviation
Topic: QR to dump entire A330F fleet, favors 777F
Replies: 53
Views: 12206

Re: QR to dump entire A330F fleet, favors 777F

I think the point he was making is there is an overcapacity in the ME. Etihad, Emirates, and Saudi have all grounded aircraft, I would be surprised if Qatar did not. How much of it is due to the normally yearly Ramadan slow down is yet to be seen. Plus the A332F is mainly used for regional routes, a...

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by zeke
Sat Jun 23, 2018 10:07 pm
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

Nice post, but I do not agree with the comment it is performance alone that seals the deal, for us it’s a nett present value assessment so performance, maintenance, financing etc come into play to determine lifespan costs. If the engine misses its mark the manufacturer will offer a deal, the airfram...

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by zeke
Sat Jun 23, 2018 1:27 pm
Forum: Civil Aviation
Topic: Airbus A350 Production/Delivery Thread 2018
Replies: 1068
Views: 372603

Re: Airbus A350 Production/Delivery Thread 2018

Isn't the range delta from higher MTOW extra fuel determined by the fuel flow at the beginning of the flight? ( You add range at the front so to speak and not at the back :-) No, should be the fuel flow at the point plus the cost of fuel (or payload) to carry that fuel (or payload) that distance to...

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by zeke
Sat Jun 23, 2018 1:24 pm
Forum: Civil Aviation
Topic: Leeham: VLA era is over; are 779/A35K too large?
Replies: 291
Views: 41572

Re: Leeham: VLA era is over; are 779/A35K too large?

The 35K is ahead of the 777X for that for obvious reasons; and will get some orders after it enters commercial service for companies who were waiting for that point and to see some actual real world performance data. Yes it will help the 35K that its performance numbers are better than projected. B...

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