Fuel pumps is a mistake. That said I understand the inerting system was upgraded along with the additional sensors? Per Leeham.net, who were given this information by Airbus personnel, there were modifications to the fuel control system software and sensors to allow more of the existing fuel tank v...Jump to post
It is a "fog" created by significant low-level smoke generated from the large forest fires to the north, east and south. Local air quality is terrible (worse than most any other city on the planet) and covers most of the state so atmospheric conditions at Moses Lake are likely as bad as Se...Jump to post
Under pressure of politicians of both parties, the USA government will figure out some way to allow the 737MAX to be certified and fly even with some half-assed fix to protect Boeing from bankruptcy and loss of top paying jobs. Such a scenario only allows the US carriers to fly the plane, and they'...Jump to post
StTim wrote:Currently the dispute processes cannot be completed as the US government has refused to appoint the required members.
The only way to "go forward" is for Boeing to cancel the MAX, or for the government to deny certification. They have to design and build NSA now, and not be allowed to continue this MAX charade. The only way that happens if the US government offers direct financial support to Boeing Comme...Jump to post
That the same people who landed the Max in hot waters are now working on the 777X, should be deeply worrying for regulators and customer alike. I fully expect EASA to insist on performing their own certification process on this model, before it will be allowed to enter service with Lufthansa. They ...Jump to post
If the thrust bump just helps "hot and high" ops, I wonder why UA is planning to add it to the entire 787-9 fleet (as the articles state) and not just the frames that will be dedicated to serving these two routes. Yes, it offers a bigger pool of frames for substitution reasons, but seems a...Jump to post
The right question was asked, the wrong answer was given, but why? It seems like a missed opportunity to have dug in on the specifications and determine that a faulty AoA sensor would be catastrophic. Yet there's no evidence the House investigators followed up on this. It seems they were happy to j...Jump to post
What other agencies have signed off and approved the Max? EASA and Transport Canada have both had direct input on what objectives Boeing needed to meet before they were willing to consider lifting the grounding and have been actively following said work. Both have also had their own representatives...Jump to post
I understand higher thrust - but software changes to the fuel management system. What could it be? Perhaps fuel tank capacity change a’la A350ULR, without any physical change to the tanks? The reason I think it may be related to the thrust increase is that the change is only being made on the handf...Jump to post
Hopefully, he will not put the FAA on the hook with Boeing again if something else happens, whether fatal or not, certainly the optics of it does not set a good precedent. Considering how many other agencies have signed off on this after their own testing and requirements having been implemented, &...Jump to post
zeke wrote:When i look at that link...it has nothing in it regarding a thrust bump or a range increase.
Is it being implied that the B789 is getting a new expansion of range, or just that UAL is upgrading to a higher thrust version? A quick Google search did not come up with any hits about a recent maximum thrust increase for the GEnx or fuel management updates for the 787 family, I am inclined to th...Jump to post
As noted, these are software changes so they would have to be done in conjunction with the OEMs. Did UA take the highest thrust option on their GEnx engines? If not, then this could just be them doing so. It's also possible the fuel management software upgrades are part of the thrust bump package. T...Jump to post
These disadvantages are true, but get less and less true as the A321 range is expanded. And yet how many A321-200neo family members are flown on missions that really push their range? And of those that do, how many other A321-200neos are there in the fleet that are flown on shorter missions? The si...Jump to post
The world is in recession... You answered your question right there. When people do not have a job or are worried about keeping their jobs, discretionary spending on travel / vacation is unlikely. And even for those who have secure employment, travel is at best an inconvenience in the current pande...Jump to post
I'm also curious how EASA will be able to demand a change for something that is acceptable to US certification standards and is not on the current exception list where Boeing (and any other non-EASA manufactures from Brazil, Canada, and the USA have to provide additional data for certification) und...Jump to post
I would guess be it a synthetic or physical AoA sensor, the fact that the existing architecture is designed for one or two inputs only means adding said third adds possible complexity and integration issues. But as others have noted, while two is better than one, you can still have a situation where...Jump to post
Also, pushing a core that's already eaten up margin to get to current levels isn't easy and causes trade offs with durability. Making a new fan and containment and nacelle isn't cheap and easy. The testing campaign would not be cheap and easy. Exactly. GE spent over half-a-billion to upgrade the GE...Jump to post
Noshow wrote:You can't design a new CFRP wing, put on the latest engines and combine it with the 707 metal fuselsage from the 1950s!
We also have to imagine that the 757RS (Replacement Study) would have a wing with better aerodynamic performance than the A321XLR due to it being a newer design, made of CFRP, perhaps having folding wingtips for greater span and the A321 said to be somewhat "underwinged" for it's current M...Jump to post
Relating to point 3, I was not thinking that anyone would neo an existing 757. Those are quite old in terms of age and cycles. I was asking in terms of Boeing launching a new 757neo. The 757 design dates from the 1970s, so you really would not want to use it as the basis for a new airframe. So real...Jump to post
Help me understand why a 757neo wouldn't work? I can think of three major reasons: The 757-200 is 10,000kg heavier than the A321-200neo, so that is a lot of empty weight to carry around. Of course part of that is to support higher MTOW the 757-200 offered for longer range, but that's not really nee...Jump to post
To be honest, this is an example of why I find the current internet so disappointing. Boeing could be sharing a lot more about what is actually going on (like EASA is in town for some test flights, right?) but instead we get web sites focused on 'look and feel' and not on providing easy access to c...Jump to post
What exactly is the 2028 standard? Will this mean all the older 767s will have to be retired by then? It will tighten emissions standards on engine and airframe combinations and any combination that fails to meet these standards will no longer be allowed to be sold. Existing frames in service will ...Jump to post
If 788 adopts 789 wing box and wing root, does it necessarily also need to adopt the heavier gear and larger tires? is the gear significantly different on the 8 and the 9? is it manufactured by different entities? Are the gear designs intimately tied to the wing box design, or are they more bolt on...Jump to post
They'll never end. When you're as large and distributed like Boeing, expecting the entire operation to run perfectly is ludicrous. Pick any model or program throughout Boeing's history and I'm sure you can dig up a "woe". As to Boeing ceasing to exist, that is also ludicrous(ly wishful thi...Jump to post
Because (1) Boeing is reportedly considering moving the entire production line to North Charleston, and (2) South Carolina is known for being hostile to unions. If all of these frames were made in Charleston, that is compelling evidence that good union jobs also help produce a quality product, and ...Jump to post
Will this be an additional aircraft for UPS on top of their other order(s) or will it substitute for one ? At this time, the frame has replaced one of the frames UPS on order, which has been cancelled. I still think UPS will end up with taking the handful of available frames Boeing appears to still...Jump to post
Does anyone have a link or an explanation as to how this came about to be? I find it fascinating that the commonality is so far apart between variants and that the manufacturers are different as well. As Revelation alluded to, the initial 787 program was a shambles and the early airframes were sign...Jump to post
I thought the 8 had already adopted the tailplane with the AA order. The thread starter article says the 789 tail is now on the 788, which is something we've discussed on this forum already. The 787-8 and 787-9/10 now have the same aft fuselage section (Sections 47 and 48). The tailplane, or horizo...Jump to post
keesje wrote:I guess the major consideration for Boeing would be how well it would go against new, used, half new, converted A330s.
TTailedTiger wrote:What engine would be used on a supposed 757-Plus?
The 787-9 has a tailplane design composed of two pieces instead of three and hybrid laminar flow on the the leading edge of the tailplane and the fin. The forward fuselage section (Section 41) has a simpler cockpit-surround structure and there were changes to the overall structure to reduce weight a...Jump to post
Anyone know what is going on with 777 production? line 1666 has been delivered for a few days now, so line 1667 and several others should have rolled out of the factory. Yet we have seen nothing. Production is being reduced to 3 per month and it's also possible the next batch of customers have sign...Jump to post
Boeing757100 wrote:My question is, how will they re-enstate the scrapped tooling for the 757-Plus?
The MAX's AoA sensors are -statistically proven- super reliable. However they failed two times for whatever reasons causing all these troubles and triggering a system that was never expected to be practically needed. Just leaving MCAS off might create the same chaos again next time? Now caused by u...Jump to post
N328KF wrote:Would the E-4 be the only case (other than engine OEM testbeds) of a 747 being re-engined?
On a 787F certification project, you could take the same approach. It could be certified as a minor change of the proven 787 aft fuselage, or the changes are so significant, a full new testing campaign and certification is required. Well this should be a minor change considering the structure is sa...Jump to post
So better fuel efficiency (to better meet the required non-refueled range targets) and already certified for "military use" (hardened against EMP) would have almost certainly won GE the RFP even if the engine was competitively-bid.Jump to post
Only drawback is a 787 empty weighs 30t (!) more than a 763F. So a 787F would be flying around 30t "dead" expensive materials. Not a problem if you don't have to pay the fuel, operating costs for 30 years. Fair point. The A330-200F has the same issue and it has not done as well as the 767...Jump to post
What matters more to FedEx and UPS in daily MD-11 ops: the ~92,000kg payload capability or the ~610 cubic meter volume? A factory-build 767-300F has a rated maximum payload of 56,000kg and a volume of ~446 cubic meters. A 767-400F would be around ~500 cubic meters in volume, but I don't have any fig...Jump to post
It was discussed over on the E-4 thread; GE was the designated engine supplier early on for E-4 and it was a 6 plane order. Makes sense. The USAF really wanted a four-engine airframe even though McD and Lockheed did fight hard to try and win the RFP with the DC-10 and L-1011. So with two additional...Jump to post
But not necessarily that much more efficient than the proposed 764F with modern engines. Even with the "wrong" wingtip devices, the 787 wing is decades newer than the 767 wing and that has to benefit the 787's aero to a non-significant margin. And as lightsaber noted, GE is not going to s...Jump to post
I doubt Reagan had much input into the supplier list for the VC-25A. :silly: I don't know if the USAF's RFP called for an engine competition or if a single-source contract was always intended to go to GE. The E-4B has GE engines so that might very well have tipped the decision to go with GE power on...Jump to post
Well Boeing could always use the 787-3's wingtip devices to fit in the existing infrastructure. The efficiency will take a hit, but even a less-efficient 787-8F would still be more efficient than a 767-300F.Jump to post
FedEx, UPS, and now Amazon has built (or is building) their infrastructure around "D" gate aircraft. Airport space is a premium cost. It is an issue, however for those operators, their home hubs have facilities that are exclusively used by them so they can modify the infrastructure to acc...Jump to post
Possible pre-MAX to undertake a wide range of 788 developments, but............ Surely the level of 788 development is capped in the post-MAX airworthiness scrutiny environment? The 789 and 78X are 788 derivatives, and then the 'new' 788 would be a derivative of a derivative. It depends on what is ...Jump to post
I just find this to be funny, Boeing should've thought about this in 2004. IMO airlines only bought the 788 due to immediate needs to replace 767 size aircraft or embrace the publicity of being one of the first 787 carriers. The 789 is clearly a superior aircraft , and despite the short term need o...Jump to post
It is quite possible that FedEx and UPS will just place their "last call" orders for the 767-300F with deliveries planned to be completed by the 2028 ICAO cutoff and forgo moving on to a 767-XF. So the 767 commercial freighter market might very well dry up naturally by the end of the decad...Jump to post