Search found 21364 matches

by Revelation
Fri Sep 20, 2019 6:43 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I'm still waiting to hear how Boeing was able to "use" NYT with regard to this story but utterly failed to prevent NYT from printing many stories that Boeing's PR department would not approve of, but all of a sudden things have gone quiet. For quite some time undesired information got out...

Jump to post
by Revelation
Fri Sep 20, 2019 4:45 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Langwiesche is a very experienced aviator and writer with many years at Atlantic and other publications. Cheap hit there. https://en.m.wikipedia.org/wiki/William_Langewiesche :checkmark: People should do a little research. It's open season on messengers these days: shoot first and ask questions lat...

Jump to post
by Revelation
Fri Sep 20, 2019 12:44 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 285
Views: 57123

Re: KC-46 Production and Delivery Thread 2019

“Eight months have passed since our first delivery, and Boeing has not made any progress in addressing those CAT 1 deficiencies,” she added. It's interesting how different people in the same room heard this differently. From https://www.chicagobusiness.com/manufacturing/boeings-refueling-tanker-ris...

Jump to post
by Revelation
Fri Sep 20, 2019 12:14 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

The NYT article has exposed the binary narrative we're seeing from certain parties. Even though the NYT author was highly critical of all parties involved, that's not acceptable to some. If you're not placing 100% of blame in one certain direction and 0% in every other, you're a PR man, hit piece a...

Jump to post
by Revelation
Fri Sep 20, 2019 4:45 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Langwiesche is a very experienced aviator and writer with many years at Atlantic and other publications. Cheap hit there. https://en.m.wikipedia.org/wiki/William_Langewiesche :checkmark: People should do a little research. It's open season on messengers these days: shoot first and ask questions lat...

Jump to post
by Revelation
Thu Sep 19, 2019 7:36 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

DM wants the earliest date, FAA wants as much time as it can get, but not so much as to upset other stakeholders. I thought the safety of the MAX would be the only stake in all of this. Certification work driven by timelines and other stakes than safety triggered this scandal in the first place. Wh...

Jump to post
by Revelation
Thu Sep 19, 2019 6:02 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Hate big bad Boeing all you want, but there are still human factors issues involved in both accidents. Only fools and idiots think there is a single point of failure in this situation. Yet on this thread we have quotes such as "Putting the knee into Boeings neck is required" and doing oth...

Jump to post
by Revelation
Thu Sep 19, 2019 4:22 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

WIederling wrote:
Revelation wrote:
What you posted is a great example of intellectual dishonesty.

if you see it that way it is me just succumbing to peer pressure.

Classic debate club move: If you can't defend a position, seek sympathy by resorting to playing the victim.

Jump to post
by Revelation
Thu Sep 19, 2019 4:19 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Yes, thx a lot! Like I said earlier: Boeing is using the NYT for PR purposes only. The NYT article is a must read, but only because it shows to what lengths Boeing is prepared to go in order to bend public perception of the max. Now NYT is part of the pro-Boeing cabal? Sorry mate, that is not what ...

Jump to post
by Revelation
Thu Sep 19, 2019 2:31 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Can anyone come up with a situation similar to MCAS - multiple simultaneous failures, which skygods successfully handled? JT did it, on the same plane that crashed on its next flight. They even continued to destination! Yes, they had a third pilot in the cockpit, but the key was having one pilot wi...

Jump to post
by Revelation
Thu Sep 19, 2019 1:44 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Some interesting comments from the FAA: https://aviationweek.com/commercial-aviation/faa-administrator-dickson-says-max-review-will-take-some-time?utm_rid=CPEN1000002199999&utm_campaign=21477&utm_medium=email&elq2=30c8bc629ba14e5c9a901163fb346ee5 LAS VEGAS—The FAA has considerable work ...

Jump to post
by Revelation
Thu Sep 19, 2019 11:52 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

The B Fan argument is comparable to: Run over grandma on a pedestrian crossing and absolve the driver because "grandma didn't jump fast enough" in day to day life a limber elder citizens would be desirable especially when looking in the mirror. ... :-) Baloney, no one absolves Boeing. Kee...

Jump to post
by Revelation
Thu Sep 19, 2019 12:47 am
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Re: T-X becomes T-7A Red Hawk

Ok, it's settled, T-7A has afterburners.

I misunderstood what I read.

I still don't understand the math in #19.

Jump to post
by Revelation
Wed Sep 18, 2019 9:48 pm
Forum: Civil Aviation
Topic: Are chasing share price and globalisation to blame?
Replies: 12
Views: 1521

Re: Are chasing share price and globalisation to blame?

Demand has increased. As a result, earlier a flaw may be hidden for years due to the limited number of aircraft in the sky. With the 737MAX, there were nearly 300 aircraft flying within 2 years of EIS for example. Probability of finding a design flaw increases exponentially. Yet the 777 was virtual...

Jump to post
by Revelation
Wed Sep 18, 2019 8:47 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

You’re welcome, but your post read like Boeing propaganda and training captains taking occasional flights without passengers is hardly a glowing endorsement, is it? I think it's noteworthy that Transport Canada and Air Canada both are OK with using the MAX for training flights. Given the history, t...

Jump to post
by Revelation
Wed Sep 18, 2019 7:30 pm
Forum: Civil Aviation
Topic: FedEx to park 35 planes on weaker demand
Replies: 49
Views: 13872

Re: FedEx to park 35 planes on weaker demand

Parking (and not necessarily scrapping) 35 MD-10-10F, A310-300F or MD11F aircraft should be seen as pretty darn sensible, no?

They're still taking 76F in significant numbers, and will still be running 50 MD11F which is a lot more than anyone else.

Jump to post
by Revelation
Wed Sep 18, 2019 6:37 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Confirms we have MCAS 1.0 planes flying without falling out of the sky. They were all flying without falling out of the sky. Until the AOA sensors failed and the shocking flaws in MCAS implementation were able to assert themselves. You know, the flawed MCAS that Boeing decided nobody needed to know...

Jump to post
by Revelation
Wed Sep 18, 2019 4:06 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

Cruise missile tech has been around since the 70s, the surprising thing is that it hasn't been used very often at all. These days GPS receiver ICs are off the shelf items, commercial hi res satellite imagery is available to all, rocket engines are now 3D printed. I don't see many impediments to the...

Jump to post
by Revelation
Wed Sep 18, 2019 2:23 pm
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Re: T-X becomes T-7A Red Hawk

https://en.wikipedia.org/wiki/Boeing_T- ... ifications says 11,000 lbf for T-7A since it has no afterburner, whereas F18 does.

Is that the distinction we're trying to make?
-->

rlwynn wrote:
4,300 pounds of thrust less than half.

T-7 MTOW 12,125lbs

Super Hornet MTOW 66,000lbs

https://en.wikipedia.org/wiki/Boeing_T- ... ifications says 11,000 lbf for T-7A since it has no afterburner, whereas F18 does.

Is that the distinction we're trying to make?

Jump to post
by Revelation
Wed Sep 18, 2019 2:00 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Being a pilot says nothing about author's "airmanship", as he nicely proves in the article. Sully ay be the only person in US with "airmanship" proven in action. Awards can easily come from being scandalous and unprofessional, as opposed to rigorous reporting. My message was tot...

Jump to post
by Revelation
Wed Sep 18, 2019 1:38 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Airmanship is a great thing.. But anyone ever heard about journalistship? As the 4th or 5th estate (depending on where you are) their credentials are usually not questioned, unless of course it is Fox News in which case, all bets are off. This author is a pilot and grew up in an aviation family, an...

Jump to post
by Revelation
Wed Sep 18, 2019 12:29 pm
Forum: Civil Aviation
Topic: Confirmed: LX A220 GTF IFSD on September 16th, 2019
Replies: 95
Views: 20178

Re: Potential that A220 is grounded following new engine issues ?

This follows similar issues with the A220 notably: http://avherald.com/h?article=4cac778d&opt=0 HB-JCM in July http://avherald.com/h?article=4c2283b8&opt=0 HL8314 in December 2018 http://avherald.com/h?search_term=BCS3&opt=0&dosearch=1&search.x=0&search.y=0 And other various...

Jump to post
by Revelation
Wed Sep 18, 2019 12:17 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

Reuters: Saudi Arabia promises concrete proof Iran behind oil attack says all will be revealed today at 1430 GMT.

Jump to post
by Revelation
Wed Sep 18, 2019 12:09 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

The article is interesting in the sense that it brings a very different POV on the story from what we have read in the press before, and namely seems to validate key arguments some of the posters have been doing on here: that it isn't Boeing's fault, that it's all down to bad training and bad airma...

Jump to post
by Revelation
Wed Sep 18, 2019 11:55 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

In Reuters: Lone 737 MAX criss-crossed Canada for pilot checks during grounding we read: As North America’s sole MAX operator which had not flown the earlier 737NG, Air Canada cannot use that model to maintain the qualifications of its check or trainer pilots, the company said. So regulator Transpor...

Jump to post
by Revelation
Wed Sep 18, 2019 11:40 am
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

By the sound of things, this was a very sophisticated operation with extensive planning. Cruise missiles flying under a 300ft ceiling would signify a very high level of confidence in its abilities to strike desired targets. If true, the part about the missiles navigating power lines and communicati...

Jump to post
by Revelation
Wed Sep 18, 2019 12:00 am
Forum: Non-Aviation
Topic: Great Concert Lineups
Replies: 24
Views: 1043

Re: Great Concert Lineups

One on my biggest regrets was never seeing SRV - I envy you. Saw Yes a bunch of time in various lineups - was glad to see the Wakeman/Anderson/Howe/Squire/White configuration on a number of occasions. King Crimson and Steve Hackett? Man, those should be some good show. Never saw Hackett solo but di...

Jump to post
by Revelation
Tue Sep 17, 2019 11:54 pm
Forum: Non-Aviation
Topic: Great Concert Lineups
Replies: 24
Views: 1043

Re: Great Concert Lineups

Actually for sheer volume, I saw the 2013 Crossroads Guitar Festival at MSG with: Albert Lee Alice Smith Allan Holdsworth Allman Brothers Band Andy Fairweather Low B.B. King Beth Hart Blake Mills Booker T Buddy Guy Citizen Cope Dave Biller Derek Trucks Doyle Bramhall II Earl Klugh Eric Clapton Gary ...

Jump to post
by Revelation
Tue Sep 17, 2019 11:38 pm
Forum: Non-Aviation
Topic: American Football - It's back!
Replies: 116
Views: 5226

Re: American Football - It's back!

Will Tom Brady even play the entire game??? Brady never wants to come out of games and when you are thrashing a team that team gets frustrated a cheap shot is more likely. Heck the longer you are on the field the higher chance of an injury for any player and Brady is 42 and you need him in the clos...

Jump to post
by Revelation
Tue Sep 17, 2019 11:18 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

For a supposed ragtag band of rebels, they have a very impressive array of fancy weapons. Their missiles don't have a range more than 160 km but their drones do. This means they could simply waypoint from a different direction. The targets are over 800 km from their territory. The Houthi's initiall...

Jump to post
by Revelation
Tue Sep 17, 2019 8:37 pm
Forum: Civil Aviation
Topic: ​Emirates begins A380 retirements to support in-service fleet
Replies: 112
Views: 22902

Re: ​Emirates begins A380 retirements to support in-service fleet

It is not just the seats, it is about reconfiguring plumbing, toilets, galleys and probably some cabling as each airline is using a configuration specific it. Yep, back in the early days of the A380 production, Airbus spoke how each "head of class" configuration for each airline took a lo...

Jump to post
by Revelation
Tue Sep 17, 2019 6:22 pm
Forum: Military Aviation & Space Flight
Topic: USAF Considering New Build F-15X
Replies: 830
Views: 84917

Re: USAF Considering New Build F-15X

IIRC the biggest issue with the KC-46 was the new boom and shoddy work. Rather than use the same boom they have been successfully using for years, they opted for a new one. Now often this is due to requirements from the client, but if they had just used as many existing technologies from the KC-135...

Jump to post
by Revelation
Tue Sep 17, 2019 5:23 pm
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Re: T-X becomes T-7A Red Hawk

I kind of like the idea of a modern A-7 attack plane, though! Would it be FA-7 similar to FA-18? bt Probably, because ego demands everything be called a fighter, but I prefer the old school nomenclature. I also doubt T-7 has all the strength built in to the first pass models to become an attack pla...

Jump to post
by Revelation
Tue Sep 17, 2019 2:09 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Let's not overlook those companies who buy aircraft for lease, imagine that industry will have to get further restricted as a US company will not want to go through the additional expense of using a EASA certified plane in the USA and vice versa. However, it would be good for the OEM's if the head ...

Jump to post
by Revelation
Tue Sep 17, 2019 1:26 pm
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Re: T-X becomes T-7A Red Hawk

All of these are classy problems for the Boeing/Saab team to have. The initial need is to replace ~350 USAF trainers, and IMO that's just the first order of many. I kind of like the idea of a modern A-7 attack plane, though! SLUF version 1.0: https://media.defense.gov/2007/Oct/30/2000435680/780/780/...

Jump to post
by Revelation
Tue Sep 17, 2019 1:21 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

That’s certainly a concern, among others, but staying so close to an ‘ally’ that continues to fund radicalism in multiple countries is not what sensible people call prevention. Iran funds Shia radicals. Saudia funds Sunni radicals. The squabbles have been going on since Mohammad died without leavin...

Jump to post
by Revelation
Tue Sep 17, 2019 1:00 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Revelation, prior it seems as though program senior engineers reported to program managers. The Senior Engineer for Boeing was not out of the loop, but was in the loop via program managers. The difference sounds subtle, but I think it is important. Just as Boeing FAA appointed compliance people did...

Jump to post
by Revelation
Tue Sep 17, 2019 12:31 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

Hell of a thing to be helping KSA with their little war while another 9/11 anniversary comes and goes and another DOJ places Riyadh’s needs above 9/11 families, no? The mind boggles at the ‘patriotism’ in DC. One goal is being met: keep the Muslims busy hating and killing each other so they're less...

Jump to post
by Revelation
Mon Sep 16, 2019 8:55 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Most of this seems like corporate gobbledy-gook. The only thing I see that could make a positive difference is having an internal, independent safety group. If they are given authority to oversee the safety aspects of all programs and given the power to force changes when necessary regardless of bu...

Jump to post
by Revelation
Mon Sep 16, 2019 7:15 pm
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Re: T-X becomes T-7A Red Hawk

Scooped by 2 minutes, lol!

I will request a merge...

Jump to post
by Revelation
Mon Sep 16, 2019 7:13 pm
Forum: Military Aviation & Space Flight
Topic: T-X becomes T-7A Red Hawk
Replies: 26
Views: 1809

Boeing/Saab T-7A Red Hawk (Former "T-X") News And Discussion Thread

USAF has revealed the "T-X" will be known as the "Red Hawk" in honor of the Tuskegee Airmen: NATIONAL HARBOR, Maryland -- The U.S. Air Force will call its new trainer the T-7A "Red Hawk." Acting Air Force Secretary Matt Donovan announced the name of the jet, known previ...

Jump to post
by Revelation
Mon Sep 16, 2019 4:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

This would/will create a chain of responsibility throughout engineering. It seems to say that there was not any such chain. Astuteman had a lengthy post on this. Saying you want a more direct, more independent chain in the future is not the same as saying you have none right now. TFA said: The comm...

Jump to post
by Revelation
Mon Sep 16, 2019 4:32 pm
Forum: Civil Aviation
Topic: Improvements to the Boeing 787-8
Replies: 61
Views: 18184

Re: Improvements to the Boeing 787-8

The 767 has supercritical airfoils and mods have been made to wingtips overtime. A further aero dynamic clean-up using CFD could be considered. Not "damn inefficient" to start with IMO, right sized anyway versus the 787-8 maybe heavy, "oversized" wings. Is this another suggestio...

Jump to post
by Revelation
Mon Sep 16, 2019 4:14 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Seems we have a lot more insight into what the Boeing Board Committee report will recommend, via NYT ( https://www.nytimes.com/2019/09/15/business/boeing-safety-737-max.html ) and others. Seems they want all engineers to report to the Chief Engineer primarily, with secondary reporting via individual...

Jump to post
by Revelation
Mon Sep 16, 2019 12:34 pm
Forum: Civil Aviation
Topic: Kenyan lawmaker wants to ban flatulence on airplanes
Replies: 57
Views: 8420

Re: Kenyan lawmaker wants to ban flatulence on airplanes

AWACSooner wrote:
How bout some more beans Mr Taggert?

Just a single wafer thin mint....

Jump to post
by Revelation
Sun Sep 15, 2019 2:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 4377
Views: 583388

Re: Boeing 737MAX Grounded Worldwide Q3 2019

xwb777 wrote:
What if Boeing fails in maintaining the safety of the B737MAX?

They and the FAA both know they will be screwed if MAX is not safe after these many months of grounding, so they will be pretty darn sure it's safe by the time it flies.

Jump to post
by Revelation
Sun Sep 15, 2019 2:15 pm
Forum: Civil Aviation
Topic: Improvements to the Boeing 787-8
Replies: 61
Views: 18184

Re: Improvements to the Boeing 787-8

The 787-8 is 37% heavier than the 767-300ER. 763ER operators aren't looking for an ultra long thin routes replacement. They use other aircraft for that (789, A359). 37% is hard to rationalize away. But that's another discussion. That has become quiet, by the way.. How does the 767-300ER numbers com...

Jump to post
by Revelation
Sun Sep 15, 2019 2:10 pm
Forum: Non-Aviation
Topic: Amazon's Second Headquarters
Replies: 43
Views: 1865

Re: Amazon's Second Headquarters

That being said, I don't think Amazon should have located to either NoVA or NYC. As much as I would have liked Boston, that too would have been unproductive. I agree with Bill Maher (who had a New Rules segment dedicated to this ) in that Amazon should have considered somewhere else: Detroit, Colum...

Jump to post
by Revelation
Sun Sep 15, 2019 2:01 pm
Forum: Non-Aviation
Topic: Oil Fields Attack
Replies: 100
Views: 4504

Re: Oil Fields Attack

Hopefully there are some satellite shots of the attack. Not sure what satellite photos would show that can't be seen on the ground after the fact. Usable radar tracks would of more interest to me, ones that could trace the path from source to destination. IIRC Saudia operates AWACS and maybe they'v...

Jump to post
by Revelation
Sun Sep 15, 2019 1:32 pm
Forum: Non-Aviation
Topic: Great Concert Lineups
Replies: 24
Views: 1043

Re: Great Concert Lineups

In the Eddie Money thread, I mentioned having seen him on the same bill as Blondie and Alice Cooper and someone replied about how cool that was. So rather than derail that thread, figured I'd start a new one. What are some concerts you've been to where there were multiple good bands on the same bil...

Jump to post