



Boeing has grounded the 737 Max after detecting a problem in its electrical system. CNN safety analyst David Soucie said he believes the issue involves a backup to the main power system that powers all of the aircraft's electrical parts. The system is roughly analogous to the circuit breaker panel in a house. 16 customers are affected.
The fact that the planes were grounded indicates that this is potentially a "catastrophic" problem that could have caused a fire, Soucie said. But he noted it's a good sign for the plane — and its safety — that the potential threat was discovered before there was an incident.
Flying the Max is like taking a test flight. I just read that after a complete power failure, and when battery power runs out after about 30 minutes, the windmilling engines will pump enough hydraulics and pneumatics to maintain a minimum level of flight control authority. So, the clean (flaps, gear and speedbrakes up) glide rate is about 3 miles for every 1000', so from 33,000' the pilots have around 100 miles, or 15-20 minutes, to sort it out or prepare to be the first ever arrival at an undesignated location.
Boeing's 737 Max has a new problem that will ground some of the jets again
The fact that the planes were grounded indicates that this is potentially a "catastrophic" problem that could have caused a fire, Soucie said. But he noted it's a good sign for the plane — and its safety — that the potential threat was discovered before there was an incident.
Flying the Max is like taking a test flight. I just read that after a complete power failure, and when battery power runs out after about 30 minutes, the windmilling engines will pump enough hydraulics and pneumatics to maintain a minimum level of flight control authority. So, the clean (flaps, gear and speedbrakes up) glide rate is about 3 miles for every 1000', so from 33,000' the pilots have around 100 miles, or 15-20 minutes, to sort it out or prepare to be the first ever arrival at an undesignated location.

Boeing's 737 Max has a new problem that will ground some of the jets again