Search found 19211 matches

by Starlionblue
Mon Jun 17, 2019 12:30 am
Forum: Travel, Polls & Preferences
Topic: Why is the A330 still in production but the 767 isn't (for pax)?
Replies: 21
Views: 1374

Re: Why is the A330 still in production but the 767 isn't (for pax)?

While certainly a great success, the 767 was probably too small a widebody to continue holding its own in the new century. Fragmentation at the lower end of it's market space meant aircraft in the 738/321 size could take over many of the routes, while at the higher end the A330 and eventually the 78...

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by Starlionblue
Fri Jun 14, 2019 11:12 pm
Forum: Technical/Operations
Topic: LAX simultaneous opposing direction runway ops
Replies: 18
Views: 1928

Re: LAX simultaneous opposing direction runway ops

Eugenewats wrote:
What is the UAL 600T call sign about?


Might be a ferry flight, or a second flight "600" on the same day, or a number of other things.

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by Starlionblue
Fri Jun 14, 2019 12:55 am
Forum: Technical/Operations
Topic: Pilot Expense Policies
Replies: 36
Views: 4029

Re: Pilot Expense Policies

When I worked for a certain national carrier in SIN, their per diem policy was paid by regions, there was China/Asia, North America, Europe, Africa and India. India was about 80 USD, while Europe was about 4 times that. Then there was this convoluted method of calculating the first and last day amo...

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by Starlionblue
Thu Jun 13, 2019 3:05 am
Forum: Technical/Operations
Topic: Lower cabin altitude A350/787- does the crew notice?
Replies: 11
Views: 1864

Re: Lower cabin altitude A350/787- does the crew notice?

Personally, I notice. A 12-hour flight in the A350 leaves me noticeably less dehydrated and "spent" than a 9-hour flight in the A330.

The bunk in the A350 might help with this as well. :D

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by Starlionblue
Tue Jun 11, 2019 4:43 am
Forum: Technical/Operations
Topic: Why can’t aircraft maximize fuselage space by using ceiling space?
Replies: 34
Views: 3025

Re: Why can’t aircraft maximize fuselage space by using ceiling space?

You can see in these cross-sections how the cargo space is much "taller" than the crown

777
Image

A350
Image

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by Starlionblue
Tue Jun 11, 2019 3:18 am
Forum: Technical/Operations
Topic: Why can’t aircraft maximize fuselage space by using ceiling space?
Replies: 34
Views: 3025

Re: Why can’t aircraft maximize fuselage space by using ceiling space?

Aircraft are typically weight limited anyway. Extra room to stow stuff doesn't do any good if you're maxed out on weight. In reality the floor to ceiling ratio is a lot closer to the lower drawing. The floor is located near the center of the tube to maximize floor space for more seats. There really ...

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by Starlionblue
Sun Jun 09, 2019 10:32 am
Forum: Technical/Operations
Topic: Pilot Expense Policies
Replies: 36
Views: 4029

Re: Pilot Expense Policies

“silent rooms” are necessary when you check in at 6am after a red eye flight and check out at 6pm for the next duty day (or duty night) of flying. Nothing is more annoying that getting housekeeping knocking on the door at 9am after you’ve finally gotten to sleep by 7am. I was honestly surprised dur...

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by Starlionblue
Sat Jun 08, 2019 11:02 pm
Forum: Technical/Operations
Topic: Physial design of control of 737 jackscrew
Replies: 16
Views: 1777

Re: Physial design of control of 737 jackscrew

Lpbri wrote:
I have a good schematic but I don't know how to post it


If it is an image file, you can upload it to a free service like Imgur and then embed it here using the "insert image" button. If it is a PDF you can put it on DropBox or the like and link to it.

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by Starlionblue
Sat Jun 08, 2019 1:17 pm
Forum: Technical/Operations
Topic: Weight cost of pressurised cabin
Replies: 5
Views: 1381

Re: Weight cost of pressurised cabin

I wonder why the new carbon fiber airplanes are not certified to go up to 52,000 feet like some of the private jets? Is it really that much more difficult to go 6-7000 ft higher? It's not a big issue structurally or aerodynamically. We could theoretically cruise higher than the service ceiling, eve...

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by Starlionblue
Sat Jun 08, 2019 1:38 am
Forum: Travel, Polls & Preferences
Topic: Do any airlines still use ceiling mounted CRT televisions for IFE?
Replies: 25
Views: 2131

Re: Do any airlines still use ceiling mounted CRT televisions for IFE?

TTailedTiger wrote:
Even if the airline chooses wifi streaming IFE for personal devices they should still install overhead monitors for the safety video. I much prefer them over the crew doing it.


Lots of cost for something easily done by crew. Also, pax seem to pay more attention if the crew does it.

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by Starlionblue
Sat Jun 08, 2019 1:37 am
Forum: Travel, Polls & Preferences
Topic: KDTW - why not "international" in the name of the airport?
Replies: 12
Views: 1607

Re: KDTW - why not "international" in the name of the airport?

There's no obligation for an international airport to have "International" in the name. It's just a name.

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by Starlionblue
Fri Jun 07, 2019 11:06 pm
Forum: Technical/Operations
Topic: Pilot Expense Policies
Replies: 36
Views: 4029

Re: Pilot Expense Policies

Quoting jchaase (Reply # 20), " Is there a special wink-wink, nudge-nudge you do at the front desk . . ?" jchaase, this is somewhat of a ridiculous question. Of course we DON'T do a "wink-wink, nudge-nudge" at the front desk. As Starlionblue mentioned above, quiet rooms are cont...

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by Starlionblue
Fri Jun 07, 2019 10:56 pm
Forum: Technical/Operations
Topic: Hand flying commercial jets - routes
Replies: 38
Views: 4720

Re: Hand flying commercial jets - routes

Pilots don't arbitrarily say they won't fly the aircraft if the auto pilot is inop. They refer to the MEL and read the restrictions and that's usually after the dispatcher is involved and is fully aware of the restrictions. If the MEL says it is acceptable fly with restrictions like number of fligh...

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by Starlionblue
Fri Jun 07, 2019 10:49 pm
Forum: Travel, Polls & Preferences
Topic: Do any airlines still use ceiling mounted CRT televisions for IFE?
Replies: 25
Views: 2131

Re: Do any airlines still use ceiling mounted CRT televisions for IFE?

Good question! Not sure where you are located, but I can't think of many off the top of my head in the US. Many seem to have been phased out in favor of LCD/LED (?) systems or streaming networks (see below). Norwegian has a media server onboard for IFE. Connect to the free WiFi and you can stream t...

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by Starlionblue
Fri Jun 07, 2019 10:48 pm
Forum: Technical/Operations
Topic: Weight cost of pressurised cabin
Replies: 5
Views: 1381

Re: Weight cost of pressurised cabin

As I understand it, the weight penalty has decreased. A composite fuselage is lighter for the same strength. Also, it is less susceptible to corrosion, which is why the 787 and A350 can be pressurised to a lower cabin altitude (higher pressure and humidity).

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by Starlionblue
Fri Jun 07, 2019 2:13 pm
Forum: Technical/Operations
Topic: Pilot Expense Policies
Replies: 36
Views: 4029

Re: Pilot Expense Policies

Pretty similar for us as previous posts. Most hotels are pretty nice, and some are fantastic. Hotels all have a gym, free wifi for crew, silent rooms. Transportation to and from the hotel is by crew bus. We don't pay for the room. Just incidentals. What's a "silent room"? How do I get one...

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by Starlionblue
Fri Jun 07, 2019 9:03 am
Forum: Travel, Polls & Preferences
Topic: Do any airlines still use ceiling mounted CRT televisions for IFE?
Replies: 25
Views: 2131

Re: Do any airlines still use ceiling mounted CRT televisions for IFE?

SWISS still doing it on intra-Europe flights with usually some kids cartoons (if there are multiple children on board). On all other European carriers I know don't use it for IFE. Norwegian however still has the mounted televisions, but uses them for advertising and route info instead of IFE. Norwe...

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by Starlionblue
Fri Jun 07, 2019 4:14 am
Forum: Technical/Operations
Topic: How much smaller is the B777-300ER/B777-9 compare to the B747-400?
Replies: 23
Views: 3195

Re: How much smaller is the B777-300ER/B777-9 compare to the B747-400?

777-9 further stretch? Very possible. Boeing has already proposed a 777-10. It would be a 3.3 meter stretch to a total length of 80m, meaning 40 more seats if you use the space for economy. I think this would make the available floor area more than the 744's. Trijet? Extremely unlikely unless someth...

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by Starlionblue
Fri Jun 07, 2019 3:43 am
Forum: Technical/Operations
Topic: How much smaller is the B777-300ER/B777-9 compare to the B747-400?
Replies: 23
Views: 3195

Re: How much smaller is the B777-300ER/B777-9 compare to the B747-400?

What about the passenger area? How much smaller is the B777-300ER/B777-9 compare to the B747-400? 777-300ER has smaller passenger count than 747-400 in normal, 3 - class configuration. 777-9 will be roughly the same as 747-400. It's pretty much a direct replacement of that model. Of course, passeng...

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by Starlionblue
Fri Jun 07, 2019 2:53 am
Forum: Technical/Operations
Topic: Bleed AIr Off the Low Pressure Compressor?
Replies: 10
Views: 1173

Re: Bleed AIr Off the Low Pressure Compressor?

Do away with engine bleed air entirely, like a 787. Bleed air is wasteful no matter what Airbus may say. All electric is the only way to go. Airbus didn't go all electric on the A350, indicating that with today's tech going all electric is by no means the obviously more efficient solution. As chimb...

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by Starlionblue
Fri Jun 07, 2019 2:49 am
Forum: Technical/Operations
Topic: Hand flying commercial jets - routes
Replies: 38
Views: 4720

Re: Hand flying commercial jets - routes

Out of interest can anyone describe the Airbus way of hand flying at a cruise level. I understand the 737 for example having flown the sim manually but wonder what the difference is with the “trajectory control” and no manual trim switch on a bus. What happens when passengers move..? As Woodreau sa...

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by Starlionblue
Thu Jun 06, 2019 10:15 am
Forum: Technical/Operations
Topic: Bleed AIr Off the Low Pressure Compressor?
Replies: 10
Views: 1173

Re: Bleed AIr Off the Low Pressure Compressor?

I'm not an air cycle machine expert, but my guess there is you need a lot of air to condition and pressurise the entire aircraft and it is simply inefficient to use low-pressure spool air.

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by Starlionblue
Thu Jun 06, 2019 9:46 am
Forum: Technical/Operations
Topic: Prevalence of Ground Electric Power Supply
Replies: 10
Views: 1581

Re: Prevalence of Ground Electric Power Supply

At major airports, external power is typically provided at the stand. However in some cases due to the cost it may be more economical to use the APU. At many major airports, APU usage is limited by regulation, so of course they have to provide external power. Even with external power, you need the A...

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by Starlionblue
Thu Jun 06, 2019 9:43 am
Forum: Technical/Operations
Topic: Bleed AIr Off the Low Pressure Compressor?
Replies: 10
Views: 1173

Re: Bleed AIr Off the Low Pressure Compressor?

The air to have high enough pressure and temperature to actually power the air cycle machines in the packs. My guess is you wouldn't get what you need from the low-pressure compressor (fan). I can only speak for the Rolls-Royce Trent 772 and Trent XBW. They take bleed air from the intermediate press...

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by Starlionblue
Wed Jun 05, 2019 3:34 am
Forum: Technical/Operations
Topic: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?
Replies: 22
Views: 4444

Re: What is the dynamics or reason behind the turboprops rotating blades in opposite directions?

BTW, I just love the A400. Just a sweet thing to look at. Yes, the A400 is a sweet bird. I bet the Italians had something to do with it. They have such a great sense of style. The cockpit is rad as all hell. Most of the pushbuttons, levers and such are the same as on the A350 so it feels familiar, ...

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by Starlionblue
Wed Jun 05, 2019 1:31 am
Forum: Technical/Operations
Topic: Fear of aircraft lavatories
Replies: 19
Views: 2618

Re: Fear of aircraft lavatories

I have a phobia of lavatories for an entirely different reason. I'm somewhat of a germaphobe. The smallness of lavatories makes that even worse. Because if someone just got done pinching off a huge bowel movement in there right before me then I'm even closer to the fecal matter than I would be in n...

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by Starlionblue
Wed Jun 05, 2019 12:03 am
Forum: Technical/Operations
Topic: Pilot Expense Policies
Replies: 36
Views: 4029

Re: Pilot Expense Policies

Pretty similar for us as previous posts. Most hotels are pretty nice, and some are fantastic. Hotels all have a gym, free wifi for crew, silent rooms. Transportation to and from the hotel is by crew bus. We don't pay for the room. Just incidentals. Most hotels have steep discounts on meals, and I im...

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by Starlionblue
Tue Jun 04, 2019 6:57 am
Forum: Technical/Operations
Topic: Why retract flaps on the ground?
Replies: 51
Views: 6608

Re: Why retract flaps on the ground?

Another interesting question is why there is an inconsistency on when the flaps are retracted. Some pilots retract them immediately after leaving the runway while others (within the same airline) taxi with full flaps almost all the way to the gate. Shouldn't there be a checklist saying something li...

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by Starlionblue
Mon Jun 03, 2019 11:12 pm
Forum: Technical/Operations
Topic: Why retract flaps on the ground?
Replies: 51
Views: 6608

Re: Why retract flaps on the ground?

It would be inaccurate to say there is no aerodynamic drag at taxi speed. You're moving an object through the air, after all. It's just so little drag as to be insignificant.

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by Starlionblue
Mon Jun 03, 2019 12:18 pm
Forum: Technical/Operations
Topic: Fear of aircraft lavatories
Replies: 19
Views: 2618

Re: Fear of aircraft lavatories

I hate the toilet on the 1st generation A330. It is not the fear of getting sucked, but just the really loud noise that somehow freaks me out. Does the newer built A330 has a better sounding toilet? A vacuum toilet makes a sucking sound. I don't think designers design with flushing sounds in mind...

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by Starlionblue
Mon Jun 03, 2019 12:16 pm
Forum: Technical/Operations
Topic: How much a retraining is needed?
Replies: 6
Views: 1088

Re: How much a retraining is needed?

Either way they'd need a type rating on the X. It's probably a full course from the I. It's not "retraining". It's training. You're not having to relearn stuff. You're learning new stuff. And if you already have jet experience, it does help. If they are separate ratings, which I'm guessing...

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by Starlionblue
Sun Jun 02, 2019 4:05 pm
Forum: Technical/Operations
Topic: Why retract flaps on the ground?
Replies: 51
Views: 6608

Re: Why retract flaps on the ground?

I would also say in some airports with longer taxi time it will save enough fuel to make it reasonable to retract the flaps. Gee, I like your screen-name! LOL How does retracting slats/flaps on the ground save fuel? You've totally lost me on that comment. :? It's mainly about extra drag requiring m...

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by Starlionblue
Sun Jun 02, 2019 4:11 am
Forum: Technical/Operations
Topic: Can a lesser-range airplane be reconfigured to get ULH?
Replies: 13
Views: 1485

Re: Can a lesser-range airplane be reconfigured to get ULH?

You can get a lot of range just by severely limiting payload. Even an A330 has a fuel capacity of around 109 tons, meaning that on full tanks it can fly around 17 hours. Part of the reason is A330 shares the same fuselage as A340, hence the more-than-necessary fuel volume. Had it been designed as a...

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by Starlionblue
Sun Jun 02, 2019 3:09 am
Forum: Technical/Operations
Topic: Can a lesser-range airplane be reconfigured to get ULH?
Replies: 13
Views: 1485

Re: Can a lesser-range airplane be reconfigured to get ULH?

Didn't Thai and Singapore Air once do something like this with A340s? Removed seats and added tanks so they could fly from LAX or EWR non-stop to BKK and SIN? Don't think so. At least with Singapore, they had the A340s as all business class, much like British Airways with their A318s out of London ...

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by Starlionblue
Thu May 30, 2019 11:40 pm
Forum: Travel, Polls & Preferences
Topic: What happened to Continental's 737-900s?
Replies: 13
Views: 2481

Re: What happened to Continental's 737-900s?

They are all still in United's Fleet, flying along. Big difference is the exit door on the -900ER behind the wing, not there on the -900. 479 is he newest -900ER. The -800 and -900 have the same MTOW, with the -900 carrying 13 more passengers. If they have the same MTOW does that mean that the -900...

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by Starlionblue
Thu May 30, 2019 7:54 am
Forum: Travel, Polls & Preferences
Topic: What happened to Continental's 737-900s?
Replies: 13
Views: 2481

Re: What happened to Continental's 737-900s?

What's your source? Airfleets.com still shows them as part of the fleet. https://www.airfleets.net/flottecie/United%20Airlines-active-b737ng-70.htm I also checked one of the tails at random on FlightRadar24 and it flew today. https://www.flightradar24.com/data/aircraft/n37409 Wikipedia only lists t...

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by Starlionblue
Thu May 30, 2019 6:26 am
Forum: Travel, Polls & Preferences
Topic: What happened to Continental's 737-900s?
Replies: 13
Views: 2481

Re: What happened to Continental's 737-900s?

https://www.airfleets.net/flottecie/Uni ... 7ng-70.htm

I also checked one of the tails at random on FlightRadar24 and it flew today. https://www.flightradar24.com/data/aircraft/n37409
-->

What's your source?

Airfleets.com still shows them as part of the fleet. https://www.airfleets.net/flottecie/Uni ... 7ng-70.htm

I also checked one of the tails at random on FlightRadar24 and it flew today. https://www.flightradar24.com/data/aircraft/n37409

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by Starlionblue
Thu May 30, 2019 6:20 am
Forum: Technical/Operations
Topic: How does the Beluga handle in flight?
Replies: 9
Views: 2033

Re: How does the Beluga handle in flight?

No FBW doesn't mean it has no augmentation. The controls would still have artificial feel and be balanced for the aircraft. I don't think the CoG is high, even when loaded. The cargo is mostly air, after all. Empty wings and fuselages. The MTOW off the Beluga is 16 tons lower than the MTOW of the st...

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by Starlionblue
Wed May 29, 2019 7:15 am
Forum: Technical/Operations
Topic: Fear of aircraft lavatories
Replies: 19
Views: 2618

Re: Fear of aircraft lavatories

The lock mechanism is just a mechanical hasp. About as simple as you can make the thing, so there's not much that can malfunction. I can't recall ever seeing a lav without a call button, but I suppose there could be some around. Either way, the doors are pretty flimsy. Not that you could necessarily...

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by Starlionblue
Wed May 29, 2019 7:07 am
Forum: Technical/Operations
Topic: Boeing Modes vs Airbus Laws
Replies: 32
Views: 4642

Re: Boeing Modes vs Airbus Laws

Boeing does name the FBW control "laws", but they are called Modes. Normal Mode, Secondary Mode, Backup Mode, and finally Mechanical Backup.

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by Starlionblue
Wed May 29, 2019 1:38 am
Forum: Technical/Operations
Topic: SQ A359 MTOWs.
Replies: 19
Views: 1941

Re: SQ A359 MTOWs.

This probably works for certain registrations and jurisdictions; I am not familiar with such arrangements. The airline we are discussing has aircraft with fixed regulated MTOWs. Regulated MTOW is the maximum mass the performance charts or performance application generate for the runway and environm...

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by Starlionblue
Tue May 28, 2019 6:06 am
Forum: Technical/Operations
Topic: SQ A359 MTOWs.
Replies: 19
Views: 1941

Re: SQ A359 MTOWs.

akoma wrote:
wangjm777 wrote:
It could also be “variable". There is really no public information.


There are no "variable" weight versions.



Yes, there are. Same as on the A330. You can dispatch one flight with a certain MTOW, and the next flight using the same tail with another MTOW.

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by Starlionblue
Mon May 27, 2019 11:44 pm
Forum: Technical/Operations
Topic: Do the MAX 7 and 10 require MCAS?
Replies: 35
Views: 3733

Re: Do the MAX 7 and 10 require MCAS?

Can someone confirm the following: MCAS only operates approaching stall. therefore for the rest of the flight envelope it does nothing. Should it not be called 'Approaching stall help system' Then if it does nothing for the rest of the flight envelope, how can it make the plane feel the same as a N...

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by Starlionblue
Sun May 26, 2019 11:00 am
Forum: Technical/Operations
Topic: Block hours in a small piston aircraft
Replies: 13
Views: 1552

Re: Block hours in a small piston aircraft

In general, since it is a one crew aircraft, you may not both log hours. Only the pilot flying, which in a single crew aircraft would be the PIC, may log hours. There are exceptions. For example, in the US you may both log hours if you are doing simulated IMC with one of you as PIC and the other as ...

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by Starlionblue
Sun May 26, 2019 3:36 am
Forum: Technical/Operations
Topic: What is the difference between the 737-3TO and the 737-324?
Replies: 4
Views: 1110

Re: What is the difference between the 737-3TO and the 737-324?

T0 and 24 are customer codes. AFAIK they don't tell you about the spec per se. Given that Continental became United, the customer code changed.

24 was Continental and is now United.
T0 was Texas Air Corp., then it was Continental.

It's T0 btw, not TO.

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by Starlionblue
Sun May 26, 2019 2:31 am
Forum: Technical/Operations
Topic: SQ A359 MTOWs.
Replies: 19
Views: 1941

Re: SQ A359 MTOWs.

Not to be a buzzkill, but this kind of information is proprietary unless SQ or Airbus have published it publically.

There is nothing stopping you from trying to read the numbers off high resolution cockpit pictures posted online, though. :)

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by Starlionblue
Wed May 22, 2019 7:46 am
Forum: Technical/Operations
Topic: 737 derated takeoff power question
Replies: 26
Views: 3645

Re: 737 derated takeoff power question

How do pilots physically handle the throttles in an assumed temperature takeoff? In flight sim I will push the throttle levers to around 40% N1, let the engines stabilize, then hit the toga button and push the throttle levers all the way forward. In the PMDG 737 it will select the proper N1 setting...

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by Starlionblue
Wed May 22, 2019 7:39 am
Forum: Technical/Operations
Topic: Why don't Airlines use different seats in Business
Replies: 4
Views: 2188

Re: Why don't Airlines use different seats in Business

There are already slightly different versions of the seats on the plane. Not pertinent for the user but the bulkhead seats have some differences. And this does lead to more expensive certification. However, they are almost the same for parts commonality. I'm guessing airlines want the product to be ...

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by Starlionblue
Tue May 21, 2019 4:19 am
Forum: Technical/Operations
Topic: Why are the APU GEN & APU BLEED usually left on?
Replies: 11
Views: 2191

Re: Why are the APU GEN & APU BLEED usually left on?

It's all pretty seamless on the 'bus. With the APU on, when the external power is switched off on the overhead, APU gen takes up the load seamlessly through NBPT (No Break Power Transfer). Same when the APU is switched off, the engine gens take over. When starting engines, the packs are automaticall...

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by Starlionblue
Mon May 20, 2019 7:11 am
Forum: Technical/Operations
Topic: Hand flying commercial jets - routes
Replies: 38
Views: 4720

Re: Hand flying commercial jets - routes

As slcguy says, hand flying and an FM route aren't directly correlated. The flight director will show guidance for the FM route whether the AP is on or not. The flight mode annunciator will display the same modes, and the flight director bars will show where to point the nose. The difference is that...

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