Re: GPS spoofing in middle east

As a surveyor I'm curious how the aircraft's GNSS systems work. Are they only using one constellation? Between GPS/GLONASS/GAL/BDS our receivers can be picking up 30+ satellites at any given time, and that's in much less favorable conditionsfor satellite signal, dealing with tree cover and multipat...

Re: Airbus A220 Production/Deliveries - 2023

Air Senegal and Air Tanzania are looking to collaborate against PW for engine issues. https://www.google.com/amp/s/www.theeastafrican.co.ke/tea/business/tanzania-senegal-team-up-over-airbus-problems-4163878%3fview=htmlamp Looks like Air Senegal is still in on the A220. Also mentions an early rust i...

Re: Why AF422 Paris Bogota took strange route yesterday?

French ATC strike yesterday once again. This routing was certainly to avoid a constrained ATC sector

Re: FDX EVS and Adoption Across Airlines

The first EVS appeared on the fedex fleet around 2011/2012, on a MD11 if I remember well. Then suddenly, the whole fleet started to be retrofitted, except Airbuses. I was kind of shocked as it happened at a time when we, on the ramp, were asking for proper gloves and more ramp snakes for bulk ops, b...

Re: Why didn't Airbus design the A-380 wing with a great wing sweep.

Is the Boeing 747 the fastest non-supersonic jetliner? And if so, does the wing sweep have something to do with that. Are there airliners with the newer supercritical wings that can match the 747 for speed? Even surpass it. On average, you'll often see 747 and 777 cruising at around .84 while 380/3...

Re: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?

Flying in Europe, speed restrictions during the approach is a bit less common than in the US and I barely ever use flaps 10. Usually 1 - 5 - 15 - 30 or 1 - 5 - 15 - 25 - 40. Nothing in our SOPs prevents us from going from 15 to 40 at once, but that makes for a slightly dramatic configuration change....

Re: 747 small "hump" in front of tailfin

I have very detailed factory drawings, believe me, the 747s fuselage is slightly raised there. Its very slightly, just about 1 degree, on a highres profile photo you can see it. Now I'm quite interested! Any chance you can share this drawing? :) Edit : I see what you mean. We can kind of notice it ...

Re: 747 small "hump" in front of tailfin

I see no hump but the opposite : the fuselage gets "thinner" abeam the vertical fin and stabilizer to apply area rule (see https://en.wikipedia.org/wiki/Area_rule ) It's quite noticeable on the 737 : the bulky rearcone of the first 3 generations of 737 vs the one on MAXs (especially in the...

Re: Size of speed brakes[spoilers] on airliners?

Keep in mind that for cruciform tailplane, the stabilizor is in the wing slipstream. Often these weird spoilers settings have to do with buffet on the horizontal tailplane. On Airbuses you'll often see outer spoilers deflecting more than inners to limit buffets. Boeings have a flight and ground dete...

Re: If no radar over the Atlantic, what is FlightAware?

See this thread : https://www.airliners.net/forum/viewtopic.php?f=5&t=1458365&p=22682045#p22682045 Or are systems used by flightaware just "not reliable enough" to meet what I presume are ICAO standards needed for proper aircraft separation and control? I don't know which plateform...

Re: 737 MAX electrical system

According to FCOM, no change whatsoever in elec generation between NG and MAX

Re: For Pilots. What is Your Most Enjoyable Commercial Aircraft to Fly?

VMCA787 wrote:

Just remember, max performance on a swept wing is half the wing in a stalled condition and the wing, unlike a straight wing, stalls from the tip inwards.

Re: Unexplained objects on UPS pushback tug tow bar

one need to realise that the two major operators of the MD11 never equipped them with PDUs on the main deck. Looking at numbers, it's safe to say around 90% of MD11s flying in the past decade were relying on muscle power on the main deck, close to 100% nowadays. it is a HUGE pain for ramp handlers....

Re: Unexplained objects on UPS pushback tug tow bar

I'm not a loader definitely come together :tongue2: Jokes aside, one need to realise that the two major operators of the MD11 never equipped them with PDUs on the main deck. Looking at numbers, it's safe to say around 90% of MD11s flying in the past decade were relying on muscle power on the main d...

Re: Unexplained objects on UPS pushback tug tow bar

That is exactly what I’m referring to, interesting, I’ve not seen this approach used to prevent an aircraft from sitting on its tail when misloaded What’s not clear from the photo is where it attaches to the aircraft and why the red covers ? Thanks for the information The nose gear has a tie down p...

Re: How do you apply NADP2 procedure?

And I will be happy to hear practical applications of NADP2. Not all companies or pilots strictly follow what book says, so actual applications will be appreciated to see here. Thanks. Some would say this is nitpicking but actually you're quite right : Not before 240 m (800 ft) and while maintainin...

Re: A/C type behaviour in turbulence

The A380 has this feature very visible with quite large independent deflections of the ailerons to automatically counter gusts. https://youtu.be/MsV6c5GdxNQ This split-aileron activation was developed for the A380. The A330 and A340 all have a simpler "Comfort in Turbulence" function that...

Re: Taxi and Delay Times

Airlines already scrutinize all this. Back around 15 years ago and with the creation of the EU Emission Trading System, airlines had to start to monitor and report their exact fuel burn. A couple of software companies were then created to deal with this, like Aviaso, ETS Aviation, Osys etc... Most o...

Re: Radar coverage over Atlantic and other oceanic zones

If there's no transponder radar coverage over Atlantic and other oceanic zones, how can we see the aircraft passing through via websites like flightradar24? Is it all satellite? Yes. As said earlier, blue aircraft on flightradar24 map use space based ADS-B. The information comes from a company call...

Re: First New-Build ATR-72 Freighter Takes Flight

Cant speak for FX, but at 5X they do a lot of building level stuff. So the sort in SDF will build a container of stuff all going to one building. There has to be a certain threshold, but chances are if you’re filling an ATR you have enough to justify it. It works the same way for UPS in Köln as it ...

Re: Nordic Aviation - 2020

Many of these guys are straight out of Norwegian top leadership. I think these news are far more omnious warnings about Norwegian’s future than most I have heard. There was also a worrysome interview with Bjørn Kjos a month back, where it seemed he didn’t have much faith in his former baby’s future...

Re: Low QNH (!) cancels hundreds of flights in Norway

Just because the scale stops doesn’t mean you can’t adjust. You add the compensation (~30ft/hPa) to any published altitudes. Should not require any certification, just some mental arithmetic skills. The only reason not to use compensation like that is if your performance data is not available. We h...

Re: A320 Series Spoilers

The since they put the newer engines on the spoiler function of the aileron seems to have been removed. The only logical reason I can think of is due to the forces that act on the wing with the heavier engines but that’s just a guess. That's what surprises me. I've flown recently the 320neo with vu...

Re: A320 Series Spoilers

767333ER wrote:

More interesting to me is the removal of the spoileron when they put the new engines on. I imagine it has to do with wing bending forces or something.

Re: Why isn't the Trent XWB Having Issues?

I really really doubt that the variations in power requirements are leading to mechanically significant variations in RPM. Has anyone (some pilot/engineer somewhere) actually seen this on a real plane? Does the manufacturer say somewhere quotable that this is the case? I really doubt this. And you'...

Re: KLM TOPMAN PIETER ELBERS: betting on sustainable aviation

It's like having a vegan at the head of a meat company. If he's so obsessed with CO2 it might be time to step down and become a yoga teacher or something. And where would a vegan has the most impact? Alone at home, or at the head of a meat company? It's not because we fly and burn massive amount of...

Re: 787 electrical architecture efficiency vs traditional systems

The reason for increased output? Much larger PTV screens? ;) Well, that's part of it. I bet the galleys use more power too. C'mon, you forgot about mood lighting in the toilets! :duck: As for the CACs mentioned before, they used to give a lot of trouble to the maintenance, but they seem to have imp...

Re: 787 electrical architecture efficiency vs traditional systems

- Increase in engine generators from 2 to 4, which along with the necessary increased electrical output also gives greater redundancy Do you have any idea which system specifically needs this increased output? While you are absolutely right on the concepts, the new generators are not really smaller...

Re: 787 electrical architecture efficiency vs traditional systems

This brings me nicely to my next question : where Boeing went electric with the 787, what did Airbus do on the 350 for the equivalent systems?
Asked otherwise : appart from aerodynamic and engine improvements, how did Airbus increase other aircraft systems efficiency compared to previous generation?

Re: 787 electrical architecture efficiency vs traditional systems

Thanks for the replies, this Aero article is quite nice indeed!

Regarding maintenance cost, the only sure thing is that Cabin Air Compressors and electric brakes are, still up to now, in the top ten list of unscheduled components removals

787 electrical architecture efficiency vs traditional systems

Hi all, Does anyone have a number regarding efficiency of the overall electrical/bleedless architecture of the 787 vs a traditional equivalent? Do we know how much fuel saving is achieved by using this architecture? I'd love to know as well how "good" each electric system is vs its hydraul...

Re: 787 Windscreen Upward Visibility: Why the Big Pinch?

What I think you're seeing there is that the 787 actually has *more* visibility to the sides of those front windows. If you were to actually measure that central pillar, I'll bet it's within an inch of the L1011. That photo is definitely giving you a trick of perspective due to the wider angle lens...

Re: Ryanair CEO claims that Norwegian will go bankrupt

Profit is what I was implying. Contrary to a popular belief here on Anet, long haul is what's “keeping afloat” Norwegian now, with several parts of its short haul dragging it down. I don’t have a specific reference for this, but that’s what Geir Karlsen has been explaining at every meeting/press co...

Re: Ryanair CEO claims that Norwegian will go bankrupt

Dont think that Norwegian will go bankrupt, but they might need to scale down...f.ex stop B787 flights So stop the thing that makes most of the money at the moment?? :scratchchin: Turnover≠making money, i.e. profit In the case of DY longhaul flights are probably what's generating most of the losses...

Re: Ryanair CEO claims that Norwegian will go bankrupt

sas931 wrote:

Dont think that Norwegian will go bankrupt, but they might need to scale down...f.ex stop B787 flights

Re: Mode S transponder ID

I use this thread to ask the million $ question : why are we still asked to use specific 4 digits squawk codes for each flight (sometimes several when crossing FIRs!) while pretty much everybody is mode S equipped now (at least in upper airspace) ? Squawks relate to flight plan ( or absence thereof...

Re: Mode S transponder ID

I use this thread to ask the million $ question : why are we still asked to use specific 4 digits squawk codes for each flight (sometimes several when crossing FIRs!) while pretty much everybody is mode S equipped now (at least in upper airspace) ?

Re: Could the MAX grounding be the end of Norwegian?

Pilots are typically employed through agencies such as Rishworth Aviation or OSM - it's like the old Brookfield contract at Ryanair. It enables Norwegian to avoid social security payments and pilots are not afforded the same protections as at other airlines. A majority of pilots are not actually em...

Re: Could the MAX grounding be the end of Norwegian?

It's not BS - it's fact. The reason ALPA had an issue with it is because crew contracts enabled them to essentially avoid social security taxes in the countries that they were operating in. Ryanair had/has similar models - this year the UK taxman (HMRC) is clamping down on it. Imagine if the US3 di...

Re: 777 & A350 ailerons behavior vs fuselage length

While on the 787, during the takeoff role, the inboard aileron did a full cycle of its movement and returned to matching flaps 5. I don't have an explanation for that except that their could have been a cross wind that the aircraft/pilot was correcting for until they reached a higher speed. Once ag...

Re: MCAS - technical details / Airbus comparison

And just so I can get my head around the matter a bit more: There was no mentioning of the system in the initial FCOMs to the flight crews? What can you find in the manuals now? Guess what? Nothing! "MCAS" appeared in the abbreviations index of the FCOM and... that's it ! Nothing new in F...

Re: 777 & A350 ailerons behavior vs fuselage length

Thanks a lot Starlionblue.

- On the A350-1000 they also deflect slightly up with Flaps Full.

Re: 777 & A350 ailerons behavior vs fuselage length

Thanks mpdpilot for your reply. First, the videos are all just of one side of the aircraft. It is possible that aileron deflection during that stage of flight is due to control inputs from the cockpit. I just provided one exemple via YouTube for each case, but you'll find this aileron behavior on ev...

777 & A350 ailerons behavior vs fuselage length

Hi all, On the 777-200, outboard aileron droop with flaps down then back to neutral at flaps 25 and 30. We can observe this sequence in reverse during flaps retraction here : https://youtu.be/PxBEHTAqtcM?t=740 On the 777-300, outboard aileron droop with flaps down then deflect upward at flaps 25 and...

Re: Reuters/Norwegian Media: DY at Risk of Collapse

Hey guys, just click once again on the link on the first post of this thread. Please admire the headline change since this morning !! Come one, there’s absolutely nothing new in there, no tangible figure or financial report, just the opinion of a guy who heard someone saying something, but hey, “opi...

Re: Norwegian has obtained Swedish AOC

Any news regarding the Siberian overflight rights with this aoc ?

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

737NG -- If the stab trim starts to go nose down, the first thing a pilot will instinctively do if flying manually (which is a requirement for this to happen) is pull back on the control column which will stop the runaway. Does that even apply to STS operation ? At acceleration altitude for exemple...

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

The bulletin Boeing just released states in bold it's applicable to manual flight only If airspeed indication has been lost and the autopilot switched off they would be manual, no? Indeed. What's interesting now is FCOM 9.20.10 are exactly identical on NG and MAX. Read page 12 here for a summary ht...

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

groundbird wrote:

Would this have covered it?
"'What's it doing now?' click, click, click."

Re: Norwegian survival questioned-Forbes

So they are selling delivery positions. Norwegian doesn’t own those A321’s they own the right to buy their spots on the production line. That’s a big difference than selling tangible owned aircraft. The value of those delivery slots is dependent upon the market demand. Is there a huge demand for th...