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Search: Posts Made By: Ian W
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Forum: Rumours & News
6th May 2019, 15:08
Replies: 908
Views: 1,100,882
Posted By Ian W

It probably didn't mention how MCAS could...

It probably didn't mention how MCAS could override pilot input because MCAS could not override pilot input. It is the other way around any trim input by the flight crew would (and did) override MCAS....
Forum: Rumours & News
26th Apr 2019, 17:26
Replies: 908
Views: 1,100,882
Posted By Ian W

There were no survivors in either crash. ...

There were no survivors in either crash. Therefore, there are no 'families of survivors' to litigate.
That is the reason for the response.

For those that died there are Warsaw Convention limits...
Forum: Rumours & News
18th Apr 2019, 22:37
Replies: 908
Views: 1,100,882
Posted By Ian W

[/left][/left] Is this really something that...

[/left][/left]
Is this really something that needs to be trained in qualified 737 pilots? And the most important aspect too?
Forum: Rumours & News
17th Apr 2019, 21:16
Replies: 908
Views: 1,100,882
Posted By Ian W

The major problem that the 'train in the...

The major problem that the 'train in the simulator' group will face is that the failure mode of the Lion Air and Ethiopia crashes no longer exists. If a single AOA vane fails it will not cause MCAS...
Forum: Rumours & News
11th Apr 2019, 22:11
Replies: 908
Views: 1,100,882
Posted By Ian W

From the newspaper article above: The...

From the newspaper article above:


The certification process relies on crews 'flying the plane' (see magenta line video) when something goes awry. All systems eventually rely on giving the bag...
Forum: Rumours & News
1st Apr 2019, 22:29
Replies: 908
Views: 1,100,882
Posted By Ian W

QuagmireAirlines MCAS is not a stall...

QuagmireAirlines


MCAS is not a stall protection system. It is there to meet the requirements of 14 CFR 25.173 that the pull force on the control column should be linear with speed and AoA. ...
Forum: Rumours & News
1st Apr 2019, 17:48
Replies: 908
Views: 1,100,882
Posted By Ian W

If you have read my other posts, I have raised...

If you have read my other posts, I have raised the issue of the human factors nightmare that the cockpits of modern aircraft are after a minor fault. The same happened in AF447 from 'just' an iced...
Forum: Rumours & News
1st Apr 2019, 13:58
Replies: 908
Views: 1,100,882
Posted By Ian W

That was the same airframe with the same fault on...

That was the same airframe with the same fault on its previous flight. The reason it didn't crash was the Batik Airlines jump seater apparently told the Lion Air crew to switch off the Stab Trim. ...
Forum: Rumours & News
30th Mar 2019, 16:12
Replies: 908
Views: 1,100,882
Posted By Ian W

There is confusion on this thread. MCAS is not...

There is confusion on this thread.
MCAS is not to stop the aircraft stalling - it is to ensure that the correct number of pounds of force are required on the control column per knot of airspeed...
Forum: Rumours & News
24th Mar 2019, 18:53
Replies: 908
Views: 1,100,882
Posted By Ian W

I think that is precisely where we are at the...

I think that is precisely where we are at the moment.
I also think that operators increasingly skimping on training both initial and recurrent and searching FOQA and similar to ensure that nobody...
Forum: Rumours & News
24th Mar 2019, 17:38
Replies: 908
Views: 1,100,882
Posted By Ian W

Systems in all modern aircraft will eventually...

Systems in all modern aircraft will eventually hand the bag of bolts to the pilot if they cannot make sense of what is happening or there is some occurrence they have not been programmed to respond...
Forum: Rumours & News
23rd Mar 2019, 16:47
Replies: 908
Views: 1,100,882
Posted By Ian W

If you take the flying aircraft as a system,...

If you take the flying aircraft as a system, there was not a single point of failure. Apart from AoA there was the flight crew that were expected to understand and cope with a Stab Trim that was...
Forum: Rumours & News
20th Mar 2019, 15:52
Replies: 908
Views: 1,100,882
Posted By Ian W

infrequentflyer789...

infrequentflyer789 (https://www.pprune.org/members/214043-infrequentflyer789)

It is a whole different game coding in a safety related environment. I have worked in maintenance areas where "just...
Forum: Rumours & News
21st Feb 2019, 12:31
Replies: 908
Views: 1,100,882
Posted By Ian W

Definition of 'uncommanded' in a human in the...

Definition of 'uncommanded' in a human in the loop system - is that the system action takes place without the pilot initiating it. STS is an uncommanded action. However, if (MCAS - something...
Forum: Rumours & News
15th Feb 2019, 13:25
Replies: 908
Views: 1,100,882
Posted By Ian W

It doesn't seem a particularly difficult task...

It doesn't seem a particularly difficult task although the avionics architecture separation may make it less simple.

The ADIRUs receive mismatching AoA, instead of reporting 'Unreliable...
Forum: Rumours & News
14th Feb 2019, 14:26
Replies: 908
Views: 1,100,882
Posted By Ian W

Well there is a second AoA vane but the MCAS and...

Well there is a second AoA vane but the MCAS and stick shaker system only uses one at a time. The AoA vane being used swaps with the other AoA vane with Weight on Wheels. It appears both AoA vanes...
Forum: Rumours & News
13th Feb 2019, 15:08
Replies: 908
Views: 1,100,882
Posted By Ian W

As the 737 Max8 is the only variant with the...

As the 737 Max8 is the only variant with the issue and has only flown with MCAS that is difficult to say. But the point is academic as the certification authority believes that a system is needed to...
Showing results 1 to 17 of 17


 
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