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Boeing B737-8 and -9 grounding

Nasty record for the 738max… seems that pilot was doing an emergency return before crash.

LFMD, France

If it’s that AoA issue again like in Indonesia ?

Safe landings !
EDLN, Germany

Peter wrote:

It will be really interesting whether there is something wrong with the B737 or whether the pilots didn’t know how it worked.

It still a really new aircraft + very new engine, so you can’t decouple aircraft/pilot issues that much…
Is there a separate type rating for B737Max or one would just fly it under the 737-800 family?

Last Edited by Ibra at 10 Mar 21:05
Paris/Essex, France/UK, United Kingdom

Ibra wrote:

Is there a separate type rating for B737Max or one would just fly it under the 737-800 family?

No separate type rating. The only difference that I know of is how big the glass is and maybe a software change or two. Apart from that it’s still the same ancient cockpit that was developed for the 707.

EDLN/EDLF, Germany

NinerEchoPapa wrote:

No separate type rating. The only difference that I know of is how big the glass is and maybe a software change or two. Apart from that it’s still the same ancient cockpit that was developed for the 707.

There are a large number of changes from the NG.

http://www.b737.org.uk/737maxdiffs.htm

EGTK Oxford

JasonC wrote:

There are a large number of changes from the NG.

Yet also at least one NG has shown similar behaviour as well as a -500 series in a go around.

If this accident is anything like the one in Indonesia and if the connections to Kazan and Rostok accidents were not as far fetched as thought, then Boeing will have a huge problem. Ah yes, and today someone reminded us that not a month ago a 767 did the same thing on approach to Dallas. Coincidence?

LSZH(work) LSZF (GA base), Switzerland

Absolutely it is very concerning.

EGTK Oxford

Mhmm single AoA sensor input for stab trim MCAS computations….
https://www.nytimes.com/2019/02/03/world/asia/lion-air-plane-crash-pilots.html?module=inline

Last Edited by Vref at 10 Mar 23:51
EBST

NinerEchoPapa wrote:

The only difference that I know of is how big the glass is and maybe a software change or two.

I doubt that will fly very high if it turns out from “stats data” that they will need a new TC/TR for the aircraft (on engine side Leap1B is a big tweak to B737-800/CFM56-7B but very similar to A320-neo/Leap1A)

Boeing joined automation a bit later than Airbus, their old way of building/certifying aircraft did work very well but was costly compared to what they get now from automation on fly-by-wire/flight-management-systems, this did make some certification tests “bit boring” to “need some fun”, but this could backfire !

https://abcnews.go.com/Travel/boeing-test-flight-draws-plane-us/story?id=49017797

JasonC wrote:

There are a large number of changes from the NG.
http://www.b737.org.uk/737maxdiffs.htm

I did not manage to pass the quiz after a long reading of the article, so I probably need a transition course?

Last Edited by Ibra at 11 Mar 00:46
Paris/Essex, France/UK, United Kingdom

Ibra wrote:

NinerEchoPapa wrote:

The only difference that I know of is how big the glass is and maybe a software change or two.

While the buttons look the same and do the same in the eyes of the pilot, the systems behind the scenes (screens) are massively different.

I quote a very knowledgeable ground instructor at the beginning of a differences course:
X and Y are the same airplane, with the same systems, and an identical flight deck: which is why I will now talk about the differences for two weeks!

always learning
LO__, Austria
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