Re: wavy line on airbus wings

maybe its a doubler? That's my thought. Looks like a repair. If you look at other A319/20 pics you will see that the 319s have it and the 320s don’t. I think it has to do with a different contour with the flaps. I don’t know much about Airbus, but I’ll bet the flaps are different between the two ai...

Re: The History, Innovation of Engines for Neophyte

Quick answer: Of the air entering a turbofan engine, some passes through the entire engine (the core); it is compressed, mixed with fuel, burnt, passes through a turbine, and exhausted. Some just passes through the fan; it is accelerated rearward and exhausted. The ratio of the two is the 'bypass r...

Re: Why do different thrust ratings exist?

the rating plug being sort of like a "hardware dongle" in the computer sense, it tells the engine computer what thrust rating the airline has purchased / installed and thus how much power to deliver. It is installed on the engine itself and can only be changed by maintenance staff with th...

Re: Turbofan Cool Down Time

I think its become more important on the latest designs (PW1000, LEAP) due to really tight tolerances; to prevent rotor-bow where due to different cool down rates the main rotors can slightly sag and then set in this sagged position. The computers will show "DEBOW" message or something unt...

Re: Why do different thrust ratings exist?

Also in airplanes like the 737, it allows one common physical engine to be rated appropriately (20, 22, 24K) for the smaller -600/700 and larger (27, 28K) -800/900 frames, and be able to be swapped between them with just a plug change, the rating plug being sort of like a "hardware dongle"...

Re: Questions about Specs of A380

Or perhaps its just what's available on the seating market - not all seats are designed specifically with the A380 or other airplane width/height in mind. Many airlines have an of the shelf / slightly customized seat.

Re: New Zealand Aviation - April 2024

So by the end of this year we may have around 6-7 parked A321N, that's getting ridiculous. Should PW not be sorting out existing customers before providing new engines to Airbus? This whole "accept the new plane then mothball it for its engines" seems like such a waste. Just shows the sad...

Re: New Zealand Aviation - April 2024

So by the end of this year we may have around 6-7 parked A321N, that's getting ridiculous. Should PW not be sorting out existing customers before providing new engines to Airbus? This whole "accept the new plane then mothball it for its engines" seems like such a waste.

Re: A340-600 vs A350-1000 Boogies

i just saw a picture of it sideways and i completely missed the center one. My apologies. Thank you guys!!! please delete! So sorry! The B777-300ER and A350-1000 6--6 are preferable as they are a more simple design with less parts than a 4--4--4 (less hydraulics, gear doors, etc). The A346 inherite...

Re: Tail Numbers same as Radio Callsigns?

No, in New Zealand we are ZK-XXX, letters only, Australia is VH-XXX, and now allow numbers and letters.

Re: New Zealand Aviation - April 2024

https://www.stuff.co.nz/business/350232471/airports-proposed-solar-farm-step-closer-being-built Another airport looking at rolling out a solar farm for covering all airport electricity needs and then some. Good idea. Solar keeps getting cheaper and cheaper and makes these sorts of project alot more...

Re: New Zealand Aviation - April 2024

I've always said, in my opinion the A350 is a far superior product for NZ's network. I still hold out hope for an order, if the 787-10 MTOW increase fails to deliver or Boeing's priorities change there's a small window of hope. Agree. There’s a chance for the A350-1000 IMO to replace the 77W if the...

Re: Exceeding the 80x80 m Box in Length

Just curious since many potential paper aircraft proposals are approaching 80m in length (777X-10, A350-1100) would their be scope to exceed the 80x80 m box that many airports have settled on the maximum aircraft size. In particularly I'm curious about exceeding this dimension in only length as tha...

Re: Boeing 777-200/ER Wingtip Device

Also, it seems that Boeing offered folded wingtips back in the 90s with no orders booked. Did any airlines at least shown some interest towards it? AA was interested in the 772A as a A300 replacement. One of AA's requirements was operating in/out of LGA hence the folding wingtip proposal. AA petiti...

Re: Emirates A350 9 or 10 abreast in economy?

flipdewaf wrote:

DFW17L wrote:

“Flight Waitress, may I have a shoe horn? I need to take my seat.”

“Here you are. And here’s the Cisco shortening.”

‘Flight waitress’?!?!?! Do you mean trolley dolley?



Fred

Re: 787 BB (Broadband) Engine vibration source during Engine start

When the 787 engine cannot determine the engine source of vibration (N1, N2, N3), it shows BB (Broadband). Any idea why the BB is displayed during engine start? Probably due to the resonant frequency vibration coming from various sources during start, this has been present on large turbofans since ...

Re: Exceeding the 80x80 m Box in Length

The other problem you have with too long is the fuselage becomes inefficient; the A340-600 suffered a bit from this, it was just too long for 8-abreast. 10-abreast will suffer the same issue at 80m+ An A350-1100 / B777-10 would most likely top out at just under 80m partly for this reason, and avoid ...

Re: Can Cargo airlines fly above FL410?

Max Q wrote:

If I remember correctly Concorde could maintain a cabin altitude below 10,000 feet with one cabin window completely gone, not two though !

Re: New Zealand Aviation - March 2024

https://www.newshub.co.nz/home/travel/2024/03/air-new-zealand-suspending-auckland-chicago-route-from-march-31-to-october-25.html Here we go again! Yup more consequences of poor management decisions at NZ. It also boils down to the premature retirement of the 8 772s. Which had a lot more life left i...

Re: New Zealand Aviation - March 2024

I doubt it. ORD was down to twice a week, which would suggest that it is a fairly weak route - UA are not going to touch that - especially over NZ winter season. If the US routes continue to show weakness going forward, would not be surprised if NZ pulled it for good. This. Looking at the numbers, ...

Re: LA800 flight SYD-AKL in flight uncontrolled descent

sxf24 wrote:

Can falling against the yoke result in this type of situation?

Re: United flight loses main wheel departing SFO

Not the first time, a couple of 747's have shed a wheel as well. Luckily no one was hurt.

Re: New Zealand Aviation - March 2024

Smart thing to do would be to get a Boeing 737 BBJ similar to the Australian Airforce. They could then use the Poseidon crew to operate. Basically a common fleet type as he Poseidon vs a one off type. Depends entirely on what the requirements are. Hard to move lots of freight long distance on a BBJ...

Re: No APU on taxi in

I don’t supply any bleed air to the packs after blocking in. I want to make it as uncomfortable as possible for deplaning to incentivize people to get off as soon as possible… If there is a delay in getting the pax door open, I’ll put the bleeds on the APU until the door is open. After the door is ...

Re: New Zealand Aviation - March 2024

They need to buy more A320's, just look at the backlog! They need to do something. I need to go to CHC on 15 Mar for a one day return work trip. 10 days out there are no seats back to Wellington after 16:05 on a ATR. Air NZ are not providing a service or meeting demand. ATR's are little more than a...

Re: New Zealand Aviation - March 2024

Plans were already progressing with the previous government. Whether or not the current government is willing to pay for an equivalent aircraft or something else is yet to be found out. I wouldn't expect to hear much before the Budget at the end of May. Smart thing to do would be to get a Boeing 73...

Re: New Zealand Aviation - March 2024

On a per flight basis Aviation may seem polluting, but on an emission per Pax KM its more efficient than a car... so...?

Re: Takeoff power delayed response?

This procedure caused a funny scenario when I flew with my young nephew the first time, on an A320. He said, "this isn't powerful, I thought you said...." then his eyes went wide and he kept quiet. :rotfl: :rotfl: :rotfl: As SlamClick quipped on this site some years ago, "compared wi...

Re: Takeoff power delayed response?

This procedure caused a funny scenario when I flew with my young nephew the first time, on an A320. He said, "this isn't powerful, I thought you said...." then his eyes went wide and he kept quiet.

Re: Flight Simulators.

For new commercial level D sims, they buy parts direct from the OEM from my understanding.

Re: Why does the B77W have such much trust?

I'd say it's slightly underwinged for a good chunk of it's missions, as it's currently one of the most commonly used aircraft on East Asia-East Coast US routes, which have flight times of up to 16 hours. Those flights usually level off at only FL290 for the first 1-2 hours, which is much lower than...

Re: Why does the B77W have such much trust?

Is that reason why the 777X has less thrust (110 vs 115) due to the larger wing? Yes, the B779 wing allows for a slightly lower thrust engine. The 77W is not "under winged" for most of the routes it does, but does tend to cruise a bit lower at MTOW, at least for the first few hours (low 3...

Re: Was the A380 configuration correct?