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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.

PPL
LFMD, France

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

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
ESSEX, 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.

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, 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
ESSEX, 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!

has a Beagle...
LOWG Graz Austria
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