Boeing again pt2. 14

[Alistair_Heaton]

https://www.eng-tips.com/viewthread.cfm?qid=515237

first thread

 

[Alistair_Heaton]

Employees across Boeing face sweeping layoffs this week

Boeing plans to cut 10% of its workforce. Employees learn their fate Wednesday. Non-frontline workers are targeted though engineering and production won't be exempt

www.seattletimes.com

Dominic Gates so likely correct.

 

[Alistair_Heaton]

Another issue, and nothing said to the pilots.

The rate its going it will be a separate type rating.

FAA team recommends Boeing MAX design change and pilot notification

An internal memo recommends a design change to fix an engine risk on the 737 MAX, in addition to informing pilots of the risk and changing takeoff procedures.

www.seattletimes.com

 

[SWComposites]

And it might be a retrofit AD back to the MAX8 and 9.

 

[Alistair_Heaton]

From what can find out.

I remembered these load disconnects on the turbo props. Jetstream had them and so did the Q400. Presumed the A220's PW1500G had them as well. They do but also it's not documented for A320neo. Apparently they are not in old school jet turbine engines.

So it seems to be required feature for geared fans.

Now to my knowledge there was no automatic shut off of the bleedair system on the turboprops with the pressurisation system.

A220 and A320Neo. Again we can't find any documentation on it. But both types the bleedair and pressurisation and aircycle packs are fully digitally controlled. Alternating primary channels, backup channel, emergency channel, if one side fails completely the other side takes over. The whole lot is linked in with the fire alerting and ecam system. So I wouldn't be surprised if it exists.

On a side note just for a bit of fairness both bird strikes were outside the certification standards. One was an adult bald eagle.

And a report I read about an A340 hitting an albatross in the cruise over the Pacific there was smoke in the cabin as well.

The American pilots unions are involved with this further investigation I believe.

From what I can tell the system is basically analogue from the early 80's on the 737 series. It's going to be a pretty huge system change. Putting over a year onto the 10 being certified if they start tomorrow .