U.S grounds ALL 737 Max
Thread Starter
Joined: Mar 2014
Posts: 0
Likes: 0
From: WA STATE
U.S grounds ALL 737 Max
per announcement from White House
link may follow
NYT partly screwed up
https://www.nytimes.com/2019/03/13/b...a-737-max.html
link may follow
NYT partly screwed up
https://www.nytimes.com/2019/03/13/b...a-737-max.html
Trump Announces Ban of Boeing 737 Max Flights
Video
Video
0:59Canada Bans Boeing 737 Max
- March 13, 2019
President Trump announced that the United States was grounding Boeing’s 737 Max aircraft, reversing an earlier decision by American regulators to keep the jets flying in the wake of a second deadly crash involving one of the jets in Ethiopia.The Federal Aviation Administration had for days resisted calls to ground the plane even as safety regulators in some 42 countries hadbanned flights by the jets. As recently as Tuesday, the agency said it had seen “no systemic performance issues” that would prompt it to halt flights of the jet.The order came hours after Canada’s transport minister said that newly available satellite-tracking data suggested similarities between the crash in Ethiopia and another accident last October.
Joined: Sep 2010
Posts: 23
Likes: 0
From: SNA
All crew-only recovery flights. BOE= Boeing test/undelivered flights. 8900-series flights are maintenance/special flights per ICAO. ACA used 7xxx numbers as ferry flights to maintenance bases. At KPSP, the ACA aircraft arrived as normal from CYVR; the turnaround was a ferry to CYYC instead of CYVR and departed only a few minutes later than the originally scheduled revenue flight.
Last edited by kenish; 14th March 2019 at 23:35. Reason: **Corrected per Seat4A comment below***
Joined: Jan 2019
Posts: 112
Likes: 11
From: Up
These ACA flights and others that were in the air with 4 digits such as above, were all ferry flights. Seen here. These are not regular flight numbers.
Joined: Mar 2019
Posts: 72
Likes: 0
From: Canada
- Until Tuesday night, the FAA did not want to ground the 737 Max
- On Wednesday morning, new ADS-B data from Aireon was received. This contradicts earlier reports saying that the FAA received Aireon data on Monday or Tuesday.
- Reportedly there were also additional, undisclosed clues from recovered wreckage pointing to "similarities" with the Lion Air accident
- The FAA still elected not to ground the Max fleet
- 1pm Wednesday, FAA's acting chief briefed Trump and Secretary of Transportation Elaine Chao on latest information
- Trump made the decision to ground the Max fleet
- Trump calls Boeing CEO, who concurs with the decision
- Trump announces the decision, pre-empting the FAA
- FAA scrambles as Trump's announcement came "as a shock" to FAA managers
- FAA acting chief suggested in a post-conference that there are still doubts within FAA about the grounding
Joined: Mar 2019
Posts: 1
Likes: 0
From: Zurich
Why would FAA (which btw is led by a former military pilot, is it not?) resisted the groundings? In the past they were always on the side of caution. Two planes down in 5 months, the public is very concerned, yet they don't act. I don't want to speculate about the obvious suspicion of corruption but what could any other reasons be?
Joined: Apr 2014
Posts: 47
Likes: 0
From: Earth
Very good article on Leehams about this and what Boeing needs to do.
https://leehamnews.com/2019/03/13/co...-transparency/
https://leehamnews.com/2019/03/13/co...-transparency/
Joined: Dec 2002
Posts: 2,774
Likes: 350
From: UK
Preemo , #11 
A very telling article from Lehman.
The non-standard presidential intervention also adds to the FAA’s problems, reputation, trust, worldly image.
Additionally, some un substantiated reports state that the grounding lasts until Boeing has a modification, i.e not just a temporary grounding for safety until more information is available.
If so this implies that irrespective of the outcome of the Ethiopian accident, there is now sufficient concern about Lion to warrant grounding.
Trump has built his wall - around Boeing and FAA, and it is very much higher than normal.
P.S. Also https://theaircurrent.com/aviation-s...n-the-737-max/
A very telling article from Lehman.
The non-standard presidential intervention also adds to the FAA’s problems, reputation, trust, worldly image.
Additionally, some un substantiated reports state that the grounding lasts until Boeing has a modification, i.e not just a temporary grounding for safety until more information is available.
If so this implies that irrespective of the outcome of the Ethiopian accident, there is now sufficient concern about Lion to warrant grounding.
Trump has built his wall - around Boeing and FAA, and it is very much higher than normal.
P.S. Also https://theaircurrent.com/aviation-s...n-the-737-max/
Last edited by safetypee; 14th March 2019 at 07:41. Reason: P.S.
Joined: Jul 2010
Aviation Qualifications: ATPL
Posts: 1,780
Likes: 279
From: Asia
Any FAA official who grounded the B737 Max would have no chance of retiring from government service and joining Boeing. In the US, it's not unusual to have people moving from senior positions in the public sector into the private sector and vice versa within the same industry.
Joined: Sep 2017
Posts: 1,673
Likes: 2
From: Europe
Any FAA official who grounded the B737 Max would have no chance of retiring from government service and joining Boeing. In the US, it's not unusual to have people moving from senior positions in the public sector into the private sector and vice versa within the same industry.
Now back with the revolving door at the FAA.
Regulatory capture is very real and soft corruption pays big dividend.
Joined: Apr 2007
Posts: 41
Likes: 1
From: France
stick pusher
Hello, retired many years ago .Flew 737 200/300/400 and really liked the plane. This MCAS system looks similar to the ALSAS on the MD 11. Can anybody explain me why the stick pusher uses the stabiliser iso the elevator ?
Joined: Jun 2001
Aviation Qualifications: ATPL
Posts: 4,087
Likes: 4,429
From: 3rd Rock, #29B
LSAS is a stab augmentation system that made up for a relaxed stability arising from a reduced relative tail volume.MegaDeath2 pitch stability is enhanced in both directions.... The Max system is specifically related to a particular part of the envelope, where static stability reduces, where a pitch up tendency is developing. Both are related to static stability, but are for different causation, and act in different manners.
Psychophysiological entity
Joined: Jun 2001
Aviation Qualifications: ATPL
Posts: 3,383
Likes: 169
From: Walton on the Naze Essex.
Recent posts on the main thread, that happen to be from Seattle, give a very clear understanding of the design logic. But first read the Jakarta thread in full before starting again with last Sunday's crash thread. Put aside several hours for the task.
Joined: Dec 2002
Posts: 2,774
Likes: 350
From: UK
keesje, is there any FDR printout indicating slat position during that flight.
The interest is that slat triggering also depends on AoA and is in the same computational box as MCAS.
Furthermore, the mechanism of slat signalling was specifically changed in the Max (electronic?)
The interest is that slat triggering also depends on AoA and is in the same computational box as MCAS.
Furthermore, the mechanism of slat signalling was specifically changed in the Max (electronic?)