Re: AOA disagree warning...
When it comes to enabling the safety software that is already on the vehicle - YES
In this case Boeing decided to charge $40k to enable the existing software - the actual cost to Boeing to enable the software $0 !!!
The software was standard on the previous 737 version - for the MAX Boeing decided that by having it disabled by default they could make more money out of their customers at the expense of safety.
In my opinion the 737-MAX should be required to go through full certification as a new plane and not be able to rely on grandfathered safety approvals given to the original 737 models decades ago.
Icon for what should happen to Boeing management (and the FAA people who were compliant in the approval of the 737-MAX).