Ethiopian Airlines plane crashes on way to Nairobi

What your instructor never taught you. Continuing your education and learning from others. Flight safety topics and accident/incident discussions.

Moderator: Moderators

User avatar
Fife Thousand feet
Fife Thousand feet
Posts: 5569
Joined: Mon Sep 19, 2005 3:45 pm
Closest Airfield: Rhino Park
Location: Pretoria
Has liked: 29 times
Been liked: 153 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by heisan » Sun Nov 10, 2019 5:39 pm

Thermalator wrote:
Sun Nov 10, 2019 5:24 pm
g....then Boeing decided to break that tradition/philosphy with MCAS & screwed the pooch bigtime.
Automated trim/stability augmentation has been part of the computer system since the 737 Classic, and has always had full manual reversion. MCAS was just another trigger algorithm for the same basic software and hardware, and all the manual reversion systems were still in place.

From a pilots point of view, the only difference was that a failure of the other automated trim systems would result in continuous runaway trim, while some MCAS failure modes would result in an intermittent runaway trim.

(Oops - one other functional change - MCAS bypasses the column cutout - which is quite important from a pilots point of view, as in some existing trim runaway situation, any significant column movement would stop the trim too.)
Justin Schoeman

ZU-FSR (Raven)
User avatar
10000 and still climbing
10000 and still climbing
Posts: 16062
Joined: Thu Jun 19, 2008 7:46 am
Closest Airfield: FAGG
Location: Wilderness
Has liked: 373 times
Been liked: 437 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by jimdavis » Wed Nov 13, 2019 1:55 pm

From Avweb:

Boeing believes it could resume deliveries of its grounded 737 MAX model as early as December, according to a progress report released by the company on Monday. The report also outlined five key milestones the company needs to reach with the FAA before the aircraft returns to service in the U.S. The first, an FAA eCab simulator certification session, was completed last week. Boeing emphasized that it is still targeting the final quarter of 2019 for certification of the aircraft’s updated flight control software.

“Based on this schedule, it is possible that the resumption of MAX deliveries to airline customers could begin in December, after certification, when the FAA issues an Airworthiness Directive rescinding the grounding order,” Boeing said. “In parallel, we are working towards final validation of the updated training requirements, which must occur before the MAX returns to commercial service, and which we now expect to begin in January.”

The milestones still to be accomplished include a “multi-day simulator session with airline pilots to assess human factors and crew workload,” an FAA certification flight test, submission of the “final certification deliverables and artifacts” to the FAA and a simulator training evaluation by the Joint Operational Evaluation Board (JOEB). Last week, both Southwest and American Airlines pushed the expected return to service dates for their MAXs to March 2020. The MAX was grounded in March 2019 after the fatal crashes of Lion Air Flight 610 and Ethiopian Airlines Flight 302.
"PPL Manual"
"Flight Tests"
"So Others May Live"
"Flying in Africa" Vol 1
"Flying in Africa" Vol 2
Look inside these books, or buy them at:
User avatar
Reaching GFA
Posts: 263
Joined: Thu Mar 19, 2009 8:29 pm
Closest Airfield: OMAA
Has liked: 41 times
Been liked: 43 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by tansg » Thu Nov 14, 2019 7:19 am

Seems like their customers are not as confident as they are.

From Flight Global
American pushes 737 Max service re-entry to March ... ch-462111/

From AeroTime
American and Southwest postpone Boeing 737 MAX return to service ... to-service
Romeo E.T.
8000 Tousand
8000 Tousand
Posts: 8874
Joined: Wed Nov 16, 2005 10:49 pm
Closest Airfield: FAJS
Location: JHB INTL/Kpt Park/Rand Apt
Has liked: 24 times
Been liked: 137 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by Romeo E.T. » Thu Nov 14, 2019 9:58 pm ... 9216942081
Boeing’s #737MAX test aircraft is active again today near Moses Lake.

sometimes we suffer a bit from C.R.A.F.T. sickness..Can't Remember A F@#%ing Thing
User avatar
Too Tousand
Too Tousand
Posts: 2689
Joined: Sun Nov 30, 2008 2:27 pm
Closest Airfield: FAVV
Location: Vanderbijlpark
Has liked: 0
Been liked: 19 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by ddevos » Fri Nov 15, 2019 10:24 am

From the photos on it seems every newly completed 737 MAX still undergoes its usual test flight, does that mean the grounding doesn't apply to these test flights?
Dirk de Vos

If you don't gear up your brain before takeoff, you'll probably gear up your airplane on landing.
User avatar
Joining unmanned airfield circuit
Posts: 385
Joined: Thu Dec 06, 2012 9:29 pm
Closest Airfield: Polokwane Civil
Location: Polokwane
Has liked: 23 times
Been liked: 31 times

Re: Ethiopian Airlines plane crashes on way to Nairobi

Unread post by biffvj » Sat Nov 16, 2019 7:21 am

By 22 October Boeing had flown over 800 test flights sorting out the glitches. Only commercial flights grounded.
A true friend has the guts to tell you what you need to hear.

Return to “Academy & Flight Safety”