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Inspector General report says Boeing shielded key 737 Max details from FAA
Boeing shielded from federal regulators reviewing its 737 Max aircraft the extent and capability of the flawed computer system that ultimately brought down two jets, according to an inspector general report obtained by CNN. The report also faults the Federal Aviation Administration for poor communication and notes it handed over the vast majority -- 87% -- of certification responsibility to Boeing. (www.cnn.com) Más...Sort type: [Top] [Newest]
People who have been paying proper attention will notice that MCAS was not the only issue. There was also the problem that making the displays bigger, which dates back to the NG, makes the manual trim wheels too small to move by hand at when the aircraft is at high speed. Smaller diameter wheels have less mechanical advantage. There were other software issues too. Even when the aircraft is released to fly again, the crews now all need training on the new system.
Thks Chris. that point about smaller wheels was never discussed in other squawks. Nice to see others picked up on them as well.
It is ironic that they build the craft with FBW technology, yet leave mechanical trim wheels. Harkens back to the days of having an assignment due for the professor, then realizing on the last day, "OMG I am not done", so parts of it get cobbled together from older assignments.
Hopefully all the kinks are ironed out, as it's costing many lots of $$.
It is ironic that they build the craft with FBW technology, yet leave mechanical trim wheels. Harkens back to the days of having an assignment due for the professor, then realizing on the last day, "OMG I am not done", so parts of it get cobbled together from older assignments.
Hopefully all the kinks are ironed out, as it's costing many lots of $$.
Even if the wheels are smaller a) it wouldn't make that much different because the wheels aren't that large to begin with and b) they could adjust the mechanical advantage elsewhere in the system to make it equivalent.
They could have had a 15" Cragar on both sides and not be able to move it at 400 + a bunch knts!
I never brought up anything about the crashes, so do not know why you did.
If anyone can't move the wheels @ 400 knots, there is an issue, since cruise speed is 453-454 knots.
If anyone can't move the wheels @ 400 knots, there is an issue, since cruise speed is 453-454 knots.
After seeing your post [djames225] I became very discouraged.
If you aren’t a pilot, please stop posting things like “if anyone can’t move the wheels...blah blah”, because you don’t understand how trim works, the purpose of the trim wheel, the actual corrective action when you find yourself over 250 knots faster than the trim speed of the aircraft (hint, slow down a tad, don’t touch the wheel yet)...if you are a pilot please reach out to a mentor and send him/her your draft posting for review.
And get some refresher time with an instructor focused on stuck/disabled trim. Again, only if you are a pilot.
If you aren’t a pilot, please stop posting things like “if anyone can’t move the wheels...blah blah”, because you don’t understand how trim works, the purpose of the trim wheel, the actual corrective action when you find yourself over 250 knots faster than the trim speed of the aircraft (hint, slow down a tad, don’t touch the wheel yet)...if you are a pilot please reach out to a mentor and send him/her your draft posting for review.
And get some refresher time with an instructor focused on stuck/disabled trim. Again, only if you are a pilot.
Well, F A, you beat him up with facts and here is another crucial one, Vne 340knts.
https://www.airliners.net/forum/viewtopic.php?t=761785
https://www.airliners.net/forum/viewtopic.php?t=761785
Refer to runaway stab. trim in the emergency procedures, it has an indicated airspeed limit!