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27th Apr 2019, 05:22
Replies: 5,120
Views: 10,489,869
Posted By threemiles

A single sensor failure of any kind on any...

A single sensor failure of any kind on any airliner happens every day and is a no-brainer. Except on the MAX, thanks to Boeing and FAA.



Thanks. Can't say it better.
27th Apr 2019, 05:11
Replies: 79
Views: 66,932
Posted By threemiles

Be it so, also, I would expect that there is a...

Be it so, also, I would expect that there is a visual live outside check by the AMPs, demanded by the AMM, after work was performed on a critical component like this one. Safety category:...
26th Apr 2019, 16:57
Replies: 79
Views: 66,932
Posted By threemiles

Torque tube assembly

was incorrectly wired or mounted by LBAS. Spoilers were actuated on the wrong side. (mirrored) Pilots couldnt detect it during pretaxi check as the indicator shows spoiler activity only, but not on...
18th Apr 2019, 19:44
Replies: 123
Views: 204,386
Posted By threemiles

I would look at takeoff data in the FMS....

I would look at takeoff data in the FMS. Emirates, Melbourne, I guess was the one.
14th Apr 2019, 19:44
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Which means, pilots did not know about the...

Which means, pilots did not know about the revised trim cutout switches functionality on the MAX?

What does PRI and B/U mean? Would putting PRI to off and B/U on leave MCAS engaged?

Coming...
11th Apr 2019, 19:41
Replies: 85
Views: 48,705
Posted By threemiles

All maintenance of all Luftwaffe AIRBUS planes is...

All maintenance of all Luftwaffe AIRBUS planes is outsourced to Lufthansa Technik. There is an overexpectation in the media with regard to realistic delay and cancellation rate. Tis is no worse than...
9th Apr 2019, 14:05
Replies: 5,120
Views: 10,489,869
Posted By threemiles

737s prior to MAX worked like this.

737s prior to MAX worked like this.
9th Apr 2019, 11:05
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Was this taught in the difference powerpoint...

Was this taught in the difference powerpoint "training"?
9th Apr 2019, 05:33
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Of course, they could have done so, this and...

Of course, they could have done so, this and that. But they elected to start a 30 degrees bank manual flown turn at 340 kIAS without the ability to pull or trim ANU. Whatever dictated them to turn.
...
9th Apr 2019, 05:23
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Cabin diff press indicator has no influence on...

Cabin diff press indicator has no influence on ISFD IAS shown.
Some sophisticated numerical compensations that are done inside ADM and ADIRU are missing, as for AoA. But these are not too relevant...
9th Apr 2019, 05:15
Replies: 5,120
Views: 10,489,869
Posted By threemiles

There is not just another sensor, there are two...

There is not just another sensor, there are two other sensors. One is called ISFD speed tape that can be used to vote 2 over 1.

If two or three probes are iced and all three tapes show different...
9th Apr 2019, 04:58
Replies: 5,120
Views: 10,489,869
Posted By threemiles

It was cut out by the cutout switches.

It was cut out by the cutout switches.
8th Apr 2019, 21:18
Replies: 5,120
Views: 10,489,869
Posted By threemiles

The question was about using GPS ground speed...

The question was about using GPS ground speed when there is IAS disagree /UAS.
8th Apr 2019, 21:13
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Aux pitot & alternate static sources, no...

Aux pitot & alternate static sources, no ADC/ADIRUís.

https://cimg0.ibsrv.net/gimg/pprune.org-vbulletin/700x486/image_523fdddbfae3e36124cf8e43c5faac49bf363b2a.png
8th Apr 2019, 20:13
Replies: 5,120
Views: 10,489,869
Posted By threemiles

There is a THIRD and independant IAS speed tape...

There is a THIRD and independant IAS speed tape on the flight deck, right above the gear announciators.

​​​​GPS delivers ground speed and is of little value, unless you are close to MSL in calm...
8th Apr 2019, 16:47
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Re-scheduling has nothing to do with...

Re-scheduling has nothing to do with "expectations". You have to keep managing the operations about 180 days in advance, i.e. availability of the right aircraft and crew at the right time, feeding...
8th Apr 2019, 13:34
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Also, they were in a 30 degrees bank turn when...

Also, they were in a 30 degrees bank turn when things started to really go wrong. Almost no pitch, 340 kts, no ability to pull or trim ANU, how can that work out? Before the bank had increased slowly...
8th Apr 2019, 13:22
Replies: 5,120
Views: 10,489,869
Posted By threemiles

This is a serious system design matter. MCAS does...

This is a serious system design matter. MCAS does its job as planned. It is just the wrong job. There is no need for assembler to speed anything up. It makes code harder readable, less maintainable...
7th Apr 2019, 16:51
Replies: 5,120
Views: 10,489,869
Posted By threemiles

[/left] The other primary problem is the...

[/left]
The other primary problem is the Emergency AD. It ignores an accelerating aircraft, low altitude, low pitch, and increasing stab load, and then asks to cutout electrical trim, without any...
7th Apr 2019, 07:27
Replies: 5,120
Views: 10,489,869
Posted By threemiles

No. I take an aviation document as literal and...

No. I take an aviation document as literal and binding. What you say may be from some private working papers, which is not an official numbered published document. So can be anything, including fake.
7th Apr 2019, 06:01
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Not to be shown for b) Seems to be true...

Not to be shown for b)


Seems to be true for c), though
7th Apr 2019, 05:43
Replies: 5,120
Views: 10,489,869
Posted By threemiles

I read it that this must be shown only for speeds...

I read it that this must be shown only for speeds between minimum for steady, unstalled flight and VLO/VFE. MCAS operates when flaps are retracted. The rubber word "appropriate" may be the secret.
7th Apr 2019, 05:22
Replies: 5,120
Views: 10,489,869
Posted By threemiles

EASA aircraft certification document written by...

EASA aircraft certification document written by an intern.
Never challenged by his/her/its boss to explain what the writing means.
Four terms for the same subject (wheel), totally confusing...
5th Apr 2019, 11:21
Replies: 5,120
Views: 10,489,869
Posted By threemiles

This is a master piece of an aviation agency...

This is a master piece of an aviation agency output. Could be any, this is not sepcific to EASA: It is the result of lawyers writing tech statements or manuals. The 737MAX emergency AD is no better....
5th Apr 2019, 07:54
Replies: 5,120
Views: 10,489,869
Posted By threemiles

Fully agreed. There could be much more on the...

Fully agreed. There could be much more on the list (e.g. same sound for cabin pressure altitude warning and t/o config, which killed 121 people)
Sensors will continue to break in future. Bits will...
Showing results 1 to 25 of 436
 


 
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