Search found 21261 matches

by Starlionblue
Tue Dec 06, 2022 1:42 am
Forum: Technical/Operations
Topic: Question about brake and rudder pedals.
Replies: 21
Views: 2059

Re: Question about brake and rudder pedals.

Thank you. So there's a little art to the maneuvering of the foot to push the top for braking action, and full on for the rudder. Check (for pedal on each side). I don't think I worded that correctly, was thinking there was an inner/outer pedal, but I get it now! Thank you!! There's a little art, y...

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by Starlionblue
Mon Dec 05, 2022 11:58 pm
Forum: Technical/Operations
Topic: A350 BTV
Replies: 8
Views: 1721

Re: A350 BTV

BTV seems like a neat tool to assist the pilots in using the runway efficiently, reducing the risk of an airplane crawling along the runway after missing the right exit and forcing the next approaching airplane to go around. Wouldn't it be even more useful in the A320, given the mission profile of ...

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by Starlionblue
Mon Dec 05, 2022 11:53 pm
Forum: Technical/Operations
Topic: What determines multiple bogey landing gear tilt?
Replies: 8
Views: 598

Re: What determines multiple bogey landing gear tilt?

Been wondering for awhile, what determines the angle that rear tilted landing gear (such as the landing gear on the 777, A330 and 757) and front tilted landing gear (such as the landing gear on the 767 and A350-900), and why do some planes (such as the A350-1000) don’t have tilted landing gear? As ...

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by Starlionblue
Mon Dec 05, 2022 9:42 am
Forum: Technical/Operations
Topic: A350 BTV
Replies: 8
Views: 1721

Re: A350 BTV

So when putting the approach and landing "into the box," do you select the runway AND the desired exit so A350 knows where to get you down to 40 (?) knots? Yes. Runway and exit. The ANF will indicate where the limit is for dry and wet conditions to assist you. The BTV disconnect speed is ...

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by Starlionblue
Mon Dec 05, 2022 4:36 am
Forum: Technical/Operations
Topic: Yaw Damper: On or Off?
Replies: 15
Views: 1015

Re: Yaw Damper: On or Off?

So as a rule of thumb (even if it is a generalisation), Boeings, Airbuses, Embraer jets and the like will have the YD on from (say) taxi out to taxi in Yes, when I wrote that, I should not of course have included Airbus in the list :-) Why not? Airbus has definitely has yaw damping. It just isn't a...

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by Starlionblue
Sun Dec 04, 2022 11:43 pm
Forum: Technical/Operations
Topic: A380-841/842 Takeoff Thrust Procedure
Replies: 14
Views: 2781

Re: A380-841/842 Takeoff Thrust Procedure

Traditionally, the engine command instrument would be N1 (fan rotation speed), or in some cases EPR (Engine Pressure Ratio). However, these are non-linear in relation to thrust. For example with N1, 15-25% gives pretty much nothing. 25-40% gives a little bit of oomph but is barely above idle. All o...

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by Starlionblue
Sun Dec 04, 2022 11:41 pm
Forum: Technical/Operations
Topic: Ever Had a Connecting Flight Through Your Home Airport?
Replies: 6
Views: 565

Re: Ever Had a Connecting Flight Through Your Home Airport?

We even do this while working. From one overnight to another with a connection at home port.

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by Starlionblue
Sun Dec 04, 2022 11:41 pm
Forum: Technical/Operations
Topic: Yaw Damper: On or Off?
Replies: 15
Views: 1015

Re: Yaw Damper: On or Off?

Would it be on for a crosswind landing? Does yaw damper only dampen external yawing and not pilot induced? I can only speak for Airbus but we can't actually turn the yaw damper off as it is an integral part of the flight control system. Large swept wing jets tend to require a yaw damper on at all t...

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by Starlionblue
Sun Dec 04, 2022 11:37 pm
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

Yes, I don't think I have ever used that function, in fact. It always makes me think, for some reason, of the real-world accident caused by a pilot setting a descent rate of 3300 ft/min, instead of 3.3 degs down (Air Accident Investigation programme!). I will try it out next time I fly an Airbus (s...

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by Starlionblue
Sat Dec 03, 2022 6:30 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

Thank you for continuing to post comments. Yes, I do use OP DES and V/S modes on descent, in addition to DES.. I probably do what you do (I like to think!) and switch modes when one isn't really doing what I need at any given moment. If I use V/S mode, I try to match my altitude and speeds to what ...

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by Starlionblue
Fri Dec 02, 2022 11:42 pm
Forum: Technical/Operations
Topic: Fan with electric core - possible?
Replies: 22
Views: 899

Re: Fan with electric core - possible?

Since most airliners currently in production are built to a specific configuration (turbine jets under the wings, ever bigger fan blades around smaller, more efficient cores=higher bypass), I was wondering if anyone can help with three questions. These are sort of expanding on each other: 1. I beli...

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by Starlionblue
Thu Dec 01, 2022 3:50 am
Forum: Technical/Operations
Topic: Singapore / Indonesia / Malaysia Airspace Speed Restrictions Under 10k Feet | Do They Exist?
Replies: 27
Views: 1064

Re: Singapore / Indonesia / Malaysia Airspace Speed Restrictions Under 10k Feet | Do They Exist?

According to my Jeppesen, in the Singapore FIR, the 250knots/10,000 only applies to arrivals. Also, 250 KIAS is 288KTAS at 10,000’ on standard day, plus/minus any wind for ground speed. A heavy 744 or 777 will climb better at 320-340 KIAS, so if allowed, will do so. "250 below 10" as a ha...

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by Starlionblue
Thu Dec 01, 2022 3:47 am
Forum: Technical/Operations
Topic: A380-841/842 Takeoff Thrust Procedure
Replies: 14
Views: 2781

Re: A380-841/842 Takeoff Thrust Procedure

I'll add that with a tailwind or crossind above 20 knots, the A350 thrust setting procedure is bit more involved. - Initially move the thrust levers from idle to the position that gives 25% thrust*. - Once thrust is stabilised, progressively move the thrust levers to reach the following: --- At 20 ...

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by Starlionblue
Wed Nov 30, 2022 11:48 pm
Forum: Technical/Operations
Topic: Hawker siddeley trident wing
Replies: 32
Views: 5498

Re: Hawker siddeley trident wing

Dear all, Thank you very much for these insights. I definitely learned something. Now I'd like to ask, how do they design the "automatic pitch down in a developing stall" in a straight wing, e.g. for the Q400 or ATR? A higher pitch angle at the wing root wouldn't change the center of lift...

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by Starlionblue
Wed Nov 30, 2022 11:42 pm
Forum: Technical/Operations
Topic: Singapore / Indonesia / Malaysia Airspace Speed Restrictions Under 10k Feet | Do They Exist?
Replies: 27
Views: 1064

Re: Singapore / Indonesia / Malaysia Airspace Speed Restrictions Under 10k Feet | Do They Exist?

"250 below 10" as a hard limit is rather a North American thing. In general, in the region in question, there is a speed limit of 250kn under 10000 feet, at least for arrivals. However, it is a rather "soft" limit. Being approved for "high speed below ten," getting &quo...

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by Starlionblue
Tue Nov 29, 2022 11:56 pm
Forum: Technical/Operations
Topic: Hawker siddeley trident wing
Replies: 32
Views: 5498

Re: Hawker siddeley trident wing

Here is the best I have: This is a very interesting drawing. Take a look at the obvious wing twist from the root to the tip. The angle of attack is significantly higher at the root. Would this design feature induce a stall behavior where the root stalls first, moving the center of lift backwards, t...

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by Starlionblue
Sat Nov 26, 2022 12:36 am
Forum: Technical/Operations
Topic: Question about brake and rudder pedals.
Replies: 21
Views: 2059

Re: Question about brake and rudder pedals.

Thank you. So there's a little art to the maneuvering of the foot to push the top for braking action, and full on for the rudder. Check (for pedal on each side). I don't think I worded that correctly, was thinking there was an inner/outer pedal, but I get it now! Thank you!! There's a little art, y...

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by Starlionblue
Fri Nov 25, 2022 11:56 pm
Forum: Technical/Operations
Topic: A question about crew bases
Replies: 27
Views: 2590

Re: A question about crew bases

How did it work for non-U.S. FA bases? I seem to recall UA had bases in London and possibly elsewhere pre-Covid. Presumably that would be based on a bespoke local pay scale rather than just a local currency equivalent of the U.S. rates? It really depends on the airline, I suppose. At my (non-US) ai...

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by Starlionblue
Fri Nov 25, 2022 11:47 pm
Forum: Technical/Operations
Topic: Question about brake and rudder pedals.
Replies: 21
Views: 2059

Re: Question about brake and rudder pedals.

Thank you. So there's a little art to the maneuvering of the foot to push the top for braking action, and full on for the rudder. Check (for pedal on each side). I don't think I worded that correctly, was thinking there was an inner/outer pedal, but I get it now! Thank you!! There's a little art, y...

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by Starlionblue
Fri Nov 25, 2022 9:58 am
Forum: Technical/Operations
Topic: Question about brake and rudder pedals.
Replies: 21
Views: 2059

Re: Question about brake and rudder pedals.

They are both rudder and brake pedals. To brake you push the tops away from you and to use the rudder you push the entire pedal. Fyi there is one pedal on each side of the steering column. Thank you. So there's a little art to the maneuvering of the foot to push the top for braking action, and full...

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by Starlionblue
Thu Nov 24, 2022 3:58 pm
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

. I do try to descend in DES mode as far as possible, to match the altitude restraints. (I realise though as I write this that I am not at all sure in fact when or why a pilot would choose OP DES instead of DES + selected speed?). ... I am never quite sure whether to reset speed restraints 'on the ...

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by Starlionblue
Thu Nov 24, 2022 5:39 am
Forum: Technical/Operations
Topic: Why do different cities in India have different transition altitudes?
Replies: 21
Views: 1317

Re: Why do different cities in India have different transition altitudes?

QFE. Gross... :lol: The one thing I really wish the entire world would agree on is altimetry. QNH vs mmHg is no big deal, but metric drives me up the wall. Get the clearance in metric. Read back. Convert to feet. Crosscheck with the other guy. Set in feet. Adds a bit to the pucker factor when you'r...

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by Starlionblue
Thu Nov 24, 2022 2:35 am
Forum: Technical/Operations
Topic: VFR question regarding US Airspace: Class D and Charlie
Replies: 23
Views: 1277

Re: VFR question regarding US Airspace: Class D and Charlie

I don't hear as much slang from controllers, mostly from pilots. Then again, I've only flown in the US, so maybe what I consider normal is way out of ICAO spec. "Out of ICAO spec" indeed. So much this. Pretty much anywhere else in the world, standard phraseology is used almost exclusively...

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by Starlionblue
Thu Nov 24, 2022 2:30 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

Why does your speed start climbing in OP DES? The elevator should be adjusting to maintain the target speed. No, I think that is my error. I must have meant DES, not OP DES. Sorry. If (probably due to ATC instructions) I am a bit 'behind' in my descent, the a/c will try to catch up in DES mode, and...

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by Starlionblue
Thu Nov 24, 2022 2:28 am
Forum: Technical/Operations
Topic: Why do different cities in India have different transition altitudes?
Replies: 21
Views: 1317

Re: Why do different cities in India have different transition altitudes?

I was always told from my flight Safety classes many many years a go the the US. uses 18,000' because it's half the atmosphere=500mb. When I went to the airlines I don't remember them saying much except the separate levels in Europe and other places. The oddest was Almaty, KZ where you descended on...

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by Starlionblue
Wed Nov 23, 2022 3:31 am
Forum: Technical/Operations
Topic: Why do different cities in India have different transition altitudes?
Replies: 21
Views: 1317

Re: Why do different cities in India have different transition altitudes?

I was always told from my flight Safety classes many many years a go the the US. uses 18,000' because it's half the atmosphere=500mb. When I went to the airlines I don't remember them saying much except the separate levels in Europe and other places. The oddest was Almaty, KZ where you descended on...

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by Starlionblue
Wed Nov 23, 2022 12:08 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

You'd pull for OPEN DES if you're in a hurry. Yes, that makes sense of course. I get worried though when, having gone over to OP DES from DES, the XP a/c can get to -5000ft/min, or even more. Then the speed starts climbing of course - adding drag is no help then. How does that compare to real-world...

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by Starlionblue
Tue Nov 22, 2022 11:54 pm
Forum: Technical/Operations
Topic: VFR question regarding US Airspace: Class D and Charlie
Replies: 23
Views: 1277

Re: VFR question regarding US Airspace: Class D and Charlie

Once again, it is nearly always the best practice in the US to be participating in the ATC system. It costs you nothing and can save you and everyone around you a ton of headaches. Unless you're flying something without an electrical system, there is just no excuse to not have a code in your transp...

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by Starlionblue
Tue Nov 22, 2022 7:07 am
Forum: Technical/Operations
Topic: VFR question regarding US Airspace: Class D and Charlie
Replies: 23
Views: 1277

Re: VFR question regarding US Airspace: Class D and Charlie

I don't hear as much slang from controllers, mostly from pilots. Then again, I've only flown in the US, so maybe what I consider normal is way out of ICAO spec. "Out of ICAO spec" indeed. So much this. Pretty much anywhere else in the world, standard phraseology is used almost exclusively...

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by Starlionblue
Tue Nov 22, 2022 2:39 am
Forum: Technical/Operations
Topic: VFR question regarding US Airspace: Class D and Charlie
Replies: 23
Views: 1277

Re: VFR question regarding US Airspace: Class D and Charlie

I love watching youtube videos of ATC recordings and the difference being local makes vs being from elsewhere. Main thing is 4 digit flight numbers spoken in street language vs official language. AAL 2550 pronounced American twentyfive fifty vs American two five five zero You almost have to be a na...

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by Starlionblue
Tue Nov 22, 2022 12:30 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

. I do try to descend in DES mode as far as possible, to match the altitude restraints. (I realise though as I write this that I am not at all sure in fact when or why a pilot would choose OP DES instead of DES + selected speed?). ... I am never quite sure whether to reset speed restraints 'on the ...

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by Starlionblue
Tue Nov 22, 2022 12:25 am
Forum: Technical/Operations
Topic: VFR question regarding US Airspace: Class D and Charlie
Replies: 23
Views: 1277

Re: VFR question regarding US Airspace: Class D and Charlie

It's also a good idea to call them up if you plan to fly over the top. A local airport here has a D going up to 2500 with a B shelf starting at 3000. Someone flew through the E at 2700 over the D and tower was not impressed. Technically legal, but poor form. The tower can be unimpressed all they wa...

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by Starlionblue
Tue Nov 22, 2022 12:20 am
Forum: Technical/Operations
Topic: Why do different cities in India have different transition altitudes?
Replies: 21
Views: 1317

Re: Why do different cities in India have different transition altitudes?

AFAIK, the reason ATC sets a transition level is due to QNH variations. The TL at any given time would be on the ATIS. Many places have a "normal" published TL, but also different TLs for very high and very low QNH. HKG is an example with a normal TL of FL110, but if the QNH is 797 or belo...

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by Starlionblue
Mon Nov 21, 2022 2:31 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

You don't need to go from DES to OP DES to slow down. Just go to selected speed. OP DES will descend you at idle, so use that to increase descent rate. The higher the speed, the higher the descent rate. And there's always the speedbrake. In the real world, the one thing you always have to watch for ...

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by Starlionblue
Mon Nov 21, 2022 2:27 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

Also, if you enter a Direct To in the FM and insert, and you're in HDG, NAV will automatically activate, and as before the heading selection will go blank on the FCU. This does lead to the call "ready to pull for heading?" if you're programming an intercept, but it at least spares you fro...

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by Starlionblue
Sun Nov 20, 2022 12:53 am
Forum: Technical/Operations
Topic: Airbus descent procedure?
Replies: 26
Views: 2469

Re: Airbus descent procedure?

"It's complicated." :) As mentioned above, there's a deceleration point automatically programmed in the flight plan at 10000ft. It shows as an amber ball on the green track line on the ND. Speed will be managed or selected. If it is managed, the deceleration point will be respected. If sel...

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by Starlionblue
Sat Nov 19, 2022 4:32 am
Forum: Technical/Operations
Topic: ETOPS certification of passenger-to-freighter converted aircraft
Replies: 20
Views: 2058

Re: ETOPS certification of passenger-to-freighter converted aircraft

Yeah, but as mentioned above, they can go 180 minutes before they need ETOPS, meaning they don't need it at all, so it's a bit of a moot point. If they needed to go beyond 180 minutes, e.g. ETOPS207, the limiting factor might well be cargo fire suppression capability, just as with twins. Not so for...

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by Starlionblue
Fri Nov 18, 2022 11:58 pm
Forum: Technical/Operations
Topic: ETOPS certification of passenger-to-freighter converted aircraft
Replies: 20
Views: 2058

Re: ETOPS certification of passenger-to-freighter converted aircraft

As I understand it, ETOPS/EDTO limits are very much dependent on cargo fire suppression capability. Why would they? There are plenty of MD-11Fs and 747Fs flying around with no fire suppression systems and without any regard to ETOPS requirements. Yeah, but as mentioned above, they can go 180 minute...

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by Starlionblue
Fri Nov 18, 2022 10:25 am
Forum: Technical/Operations
Topic: ETOPS certification of passenger-to-freighter converted aircraft
Replies: 20
Views: 2058

Re: ETOPS certification of passenger-to-freighter converted aircraft

As I understand it, ETOPS/EDTO limits are very much dependent on cargo fire suppression capability.

The remaining engine will most likely operate until it runs out of oil and fuel.

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by Starlionblue
Fri Nov 18, 2022 1:50 am
Forum: Technical/Operations
Topic: ETOPS certification of passenger-to-freighter converted aircraft
Replies: 20
Views: 2058

Re: ETOPS certification of passenger-to-freighter converted aircraft

Fair point, and the same is valid at my operator. But this doesn't remove EDTO. It simply moves the ETOPS/EDTO threshold from 60 to 180 minutes for aircraft with more than two engines.

Of course, this thread started specifically discussing a twin. :)

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by Starlionblue
Fri Nov 18, 2022 12:28 am
Forum: Technical/Operations
Topic: ETOPS certification of passenger-to-freighter converted aircraft
Replies: 20
Views: 2058

Re: ETOPS certification of passenger-to-freighter converted aircraft

Many variables in play here. Is ETOPS required for freight? I don't think it is, but I might be all wet. It might be a local requirement for certain freighters. The A/C that kept ETOPS during conversion may be subject to leasing terms, where the residual value of the A/C is less without the ETOPS c...

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by Starlionblue
Fri Nov 18, 2022 12:26 am
Forum: Technical/Operations
Topic: Non-Operational Reasons That Seats Might Be Held Back From Sale (United Express)
Replies: 20
Views: 2518

Re: Non-Operational Reasons That Seats Might Be Held Back From Sale (United Express)

8500ft length at 5500ft elevation … no problem on a good day but will have significant weight restrictions with winter weather conditions. Could be a contributing factor. What would be limiting about winter weather? Too good performance of engines and wings? Runway friction coefficient is a thing, ...

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by Starlionblue
Wed Nov 16, 2022 11:46 pm
Forum: Technical/Operations
Topic: The manufacturing of the current 767
Replies: 12
Views: 2163

Re: The manufacturing of the current 767

As GalaxyFlyer says, upgrades are common. For example, our newer A330s ("newer" meaning made after about 2007) have upgraded standby instrumentation, FM, displays, and many other bits and bobs. Older frames also get upgrades during their service like, for example with RNP AR capability. An...

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by Starlionblue
Sun Nov 13, 2022 2:39 pm
Forum: Technical/Operations
Topic: Aircraft starting to climb after a long time
Replies: 5
Views: 1985

Re: Aircraft starting to climb after a long time

There is no danger as long as there are no terrain clearance issues.

The only significant consideration is higher fuel burn at lower altitude, but a few minutes won't make a difference.

The typical reason to be kept low is for traffic.

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by Starlionblue
Sun Nov 13, 2022 2:13 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

I guess all planes have their traps, but I never got that "feature" on Boeing. Is there any reason the heading bug isn't automatically to the current heading while in LNAV? Sometimes it is useful to be able to "pre-select" a heading when still in LNAV. At my home airport a commo...

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by Starlionblue
Sat Nov 12, 2022 3:21 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

HDG knob has “push to sync” there for a reason. Push, then select HDG mode. I guess all planes have their traps, but I never got that "feature" on Boeing. Is there any reason the heading bug isn't automatically to the current heading while in LNAV? On Airbus, the heading selection in the ...

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by Starlionblue
Fri Nov 11, 2022 6:14 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

These days, an overeliance on automatics seems to be much more of an issue than an under reliance. Asiana 214 and two Emirates incidents have demonstrated this. AF 447 also involved poor manual flying skill in a crisis situation. I would categorize Asiana 214 and Emirates 521 more as "incomple...

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by Starlionblue
Fri Nov 11, 2022 12:00 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

There were two China Airlines (Taiwan) A300 accidents that might apply here. IIRC, one was at Nagoya in the spring of 1994 and another at Taipei (TPE) somewhat later. NGO: https://simpleflying.com/china-airlines-flight-140-crash-story/ TPE: https://en.wikipedia.org/wiki/China_Airlines_Flight_676 I ...

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by Starlionblue
Thu Nov 10, 2022 5:35 am
Forum: Technical/Operations
Topic: Pilot/auotopilot incedents
Replies: 24
Views: 2496

Re: Pilot/auotopilot incedents

I seem to remember some Airbus incident wayyyyy back in the 90s outside of Moscow, repeated stalls of the aircraft as the crew fought against the automation. I remember it being attributed to the crew not understand the aircraft was actually right and that they shouldn’t have fought the computers. ...

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