#737-max

[bananamanuk]

First flight Boeing 737 MAX-9 London Stansted Airport filmed in 4K Ultra HD

[eideard]

Ultimate corporate remedy for 737 MAX safety woes - change the name!

Ultimate corporate remedy for 737 MAX safety woes – change the name!

The first of the 737 MAXs ordered by low-cost carrier VietJet have just rolled out of Boeing’s paint shop…in mid-December. But you wouldn’t know it. VietJet has a very large order placed with Boeing for the 737 MAX and those orders were signed off on in a blaze of publicity. But there’s barely a squeak from the airline now as the first 737 MAXs in VietJet colors are parked at Boeing’s storage…

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[expectsomuch]

Crash Course

How Boeing's managerial revolution created the 737 MAX disaster

The planes were also considerably longer, heavier, and wider of wingspan. What they couldn’t be, without redesigning the landing gear and really jeopardizing the grandfathered FAA certification, was taller, and that was a problem. The engines were too big to tuck into their original spot underneath the wings, so engineers mounted them slightly forward, just in front of the wings.


This alteration created a shift in the plane’s center of gravity pronounced enough that it raised a red flag when the MAX was still just a model plane about the size of an eagle, running tests in a wind tunnel. The model kept botching certain extreme maneuvers, because the plane’s new aerodynamic profile was dragging its tail down and causing its nose to pitch up. So the engineers devised a software fix called MCAS, which pushed the nose down in response to an obscure set of circumstances in conjunction with the “speed trim system,” which Boeing had devised in the 1980s to smooth takeoffs. Once the 737 MAX materialized as a real-life plane about four years later, however, test pilots discovered new realms in which the plane was more stall-prone than its predecessors. So Boeing modified MCAS to turn down the nose of the plane whenever an angle-of-attack (AOA) sensor detected a stall, regardless of the speed.

...

Any program coded to take data from both sensors would have had to account for the possibility the sensors might disagree with each other and devise a contingency for reconciling the mixed signals. Whatever that contingency, it would have involved some kind of cockpit alert, which would in turn have required additional training—probably not level-D training, but no one wanted to risk that. So the system was programmed to turn the nose down at the feedback of a single (and somewhat flimsy) sensor. And, for still unknown and truly mysterious reasons, it was programmed to nosedive again five seconds later, and again five seconds after that, over and over ad literal nauseam.


And then, just for good measure, a Boeing technical pilot emailed the FAA and casually asked that the reference to the software be deleted from the pilot manual.


So no more than a handful of people in the world knew MCAS even existed before it became infamous. Here, a generation after Boeing’s initial lurch into financialization, was the entirely predictable outcome of the byzantine process by which investment capital becomes completely abstracted from basic protocols of production and oversight: a flight-correction system that was essentially jerry-built to crash a plane. “If you’re looking for an example of late stage capitalism or whatever you want to call it,” said longtime aerospace consultant Richard Aboulafia, “it’s a pretty good one.”


Emphasis mine. 

[eideard]

When the marketing department makes safety decisions

When the marketing department makes safety decisions

Click to enlarge — Michael Tewelde/AFP

The Boeing 737 and the Airbus 320 types are single aisle planes with some 150 seats. Both are bread and butter planes sold by the hundreds with a good profit. In 2010 Airbus decided to offer its A-320 with a New Engine Option (NEO) which uses less fuel. To counter the Airbus move Boeing had to follow up. The 737 would also get new engines for a more…

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[batyearofthetiger]

@Boeing 757 vs. 737 from a Pilot's Perspective

@Boeing 757 vs. 737 from a Pilot’s Perspective

The Boeing 757 is an iconic plane in its own right, though not always as distinguishable to the untrained eye as a 747 or A380. It has been in production from 1981 to 2004, and in service since 1983. In fact, many airlines are holding onto their 757s tightly because of the versatility offered by this plane, in range, passenger capacity, and flight abilities.

While browsing Reddit’s /r/Aviation…

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[batyearofthetiger]

737-MAX and A32x-neo

No, I don’t mean the Messianic figure from the Matrix movies, I am referring to Airbus’s denotation of improved engine performance and mileage: “New Engine Option”. These two narrow-body planes are reported to have an improved fuel efficiency estimated at 15%over their traditional counterparts, which will allow them to fly from the East Coast to Western Europe. This efficiency is due to a…

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[iloveplanes]

Boeing 737-Max NEO?

I’ve been busy these past few weeks shooting softball games among other things. It’s good when the photography business gets busy because that means that my bills get paid on time, which is always a good thing.

Anyway, I was in San Antonio Texas a couple of days ago, at the St Mary’s University campus when I looked up and noticed that there was something different about this one plane. Turns out,…

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