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Forum: Tech Log
15th Jul 2019, 23:52
Replies: 15
Views: 1,259
Posted By john_tullamarine

This is the only paper I've found regarding a...

This is the only paper I've found regarding a DC-9's takeoff prep

Then do make sure that the model used and the one you are trying to model are the same - the numbers do differ between models.
...
14th Jul 2019, 09:57
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

I would be interested in your opinion on the...

I would be interested in your opinion on the automatic use of stabiliser trim to correct pitch feel

In respect of the Boeing, I can only speculate.

For lighties, the normal way to influence...
14th Jul 2019, 08:26
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

This MCAS, we previously told you nothing about,...

This MCAS, we previously told you nothing about, ıs merely a pitch feel modifier and absolutely not SAS or anti-stall device

Is not any longitudinal SAS a pitch feel modifier ? .. inadequate...
12th Jul 2019, 05:57
Replies: 50
Views: 26,923
Posted By john_tullamarine

A sobering read from a CASA AWB I received today...

A sobering read from a CASA AWB I received today - a small corrosion pit and rapid crack growth - just what no-one wants to see.
...
11th Jul 2019, 12:57
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

Just wanting the second MCAS "solution" put...

Just wanting the second MCAS "solution" put openly in view John - yes we need more details on that.

There is no "hiding" those concerns - plenty of references abound. I am sure that, at day's...
11th Jul 2019, 09:22
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

the first was for the stick feel certification...

the first was for the stick feel certification issue, the other not mentioned as a stick feel issue but more a stability issue

I guess we all are interested and following the story in the hope of...
10th Jul 2019, 23:22
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

I believe the certification required a higher...

I believe the certification required a higher force to signal to the pilot the approach to the stall - enter MCAS.

Greetings, good sir. - I trust you and your good lady continue to enjoy...
Forum: Tech Log
10th Jul 2019, 01:21
Replies: 11
Views: 1,663
Posted By john_tullamarine

I know it may look simple or ridiculous but I'm...

I know it may look simple or ridiculous but I'm really not sure.

Not at all - the only silly questions are those we don't ask when we don't know the answer ...

Consider an aerobatic aircraft...
10th Jul 2019, 00:07
Replies: 1,433
Views: 1,053,852
Posted By john_tullamarine

A sideline observation. Reading though some...

A sideline observation.

Reading though some of the MAX thread(s) comments, there are numerous references to the offset thrust line's causing a pitching moment change with thrust changes but a...
Forum: Questions
9th Jul 2019, 10:08
Replies: 3
Views: 978
Posted By john_tullamarine

Moved from Tech Log

Moved from Tech Log
9th Jul 2019, 00:31
Replies: 27
Views: 2,962
Posted By john_tullamarine

This is certainly not an answer you should give...

This is certainly not an answer you should give an aspiring private pilot.

(Personal view, only)

Well, yes, and no.

One of the problems in this Industry is that pilots, in general, are...
6th Jul 2019, 04:06
Replies: 84
Views: 31,132
Posted By john_tullamarine

Surely, the student pair will have a set of...

Surely, the student pair will have a set of course/session/endorsement/recurrency notes for reference ? If this is the case, as it should be, the pilots should be turning up for the session already...
1st Jul 2019, 23:11
Replies: 96
Views: 35,726
Posted By john_tullamarine

I don't see this link anywhere in the thread -...

I don't see this link anywhere in the thread - Alcock and Brown > Vintage Wings of Canada...
Forum: Questions
30th Jun 2019, 00:41
Replies: 1
Views: 996
Posted By john_tullamarine

Manufacturers may be not wish to publish figures...

Manufacturers may be not wish to publish figures as they are concerned about not meeting targets and the consequential contractual liabilities.

Such would relate to a specified build state. Even...
26th Jun 2019, 12:08
Replies: 83
Views: 30,964
Posted By john_tullamarine

'twas an observation, only. Like you, I prefer...

'twas an observation, only. Like you, I prefer that folks stay in their areas of discipline competence when pontificating ... (not always that easy unless stone cold sober, of course ..)
25th Jun 2019, 23:38
Replies: 83
Views: 30,964
Posted By john_tullamarine

the same aviation “expert” Putting to one...

the same aviation “expert”

Putting to one side the possibility of misreporting ... I haven't spoken with Neil for many years, don't know if he has any/significant pilot experience, but he is...
Forum: Tech Log
25th Jun 2019, 23:31
Replies: 17
Views: 2,504
Posted By john_tullamarine

and he didn't care if it was on the MMEL - so...

and he didn't care if it was on the MMEL - so figure it out

Absolutely not a problem. The MMEL would not have had the permission for the consideration of initial flight testing, one opines ? In...
Forum: Tech Log
21st Jun 2019, 04:55
Replies: 24
Views: 5,708
Posted By john_tullamarine

FWIW on the -300, I used just to align with the...

FWIW on the -300, I used just to align with the runway at a suitable height, depending on crosswind (perhaps 200-300ft approaching maximum), sideslip as required to maintain track, pitch up a degree...
Forum: Tech Log
15th Jun 2019, 11:30
Replies: 21
Views: 3,596
Posted By john_tullamarine

We'll leave this query here for the time being....

We'll leave this query here for the time being. If it doesn't get much in the way of useful responses, we might look at moving it to Questions.

A difficult question as, for maximum braking, you...
Forum: Questions
12th Jun 2019, 23:51
Replies: 20
Views: 4,428
Posted By john_tullamarine

Good sir, please do wade into any discussions,...

Good sir, please do wade into any discussions, the subjects of which you consider you might have comments of value to offer ...
12th Jun 2019, 23:46
Replies: 17
Views: 6,962
Posted By john_tullamarine

but I bet there has been a lot of shit she has...

but I bet there has been a lot of shit she has put up with to get to where she is today.

Indeed, but the lady has a high level of resilience. Without knowing the background to this award, I...
Forum: Tech Log
12th Jun 2019, 23:42
Replies: 23
Views: 4,647
Posted By john_tullamarine

It all commences at the start of the takeoff roll...

It all commences at the start of the takeoff roll with the starting vortex. PPRuNe's resident aerodynamicist, Owain Glyndwr, has numerous words to say on circulation which is the buzzword you seek. ...
Forum: Questions
12th Jun 2019, 08:48
Replies: 5
Views: 2,831
Posted By john_tullamarine

.. which is why one uses something else to...

.. which is why one uses something else to establish the fact of being on course prior to following the needle.

Years ago, I was doing some contract training work for SAA on the B732 and the sim...
12th Jun 2019, 08:41
Replies: 17
Views: 6,962
Posted By john_tullamarine

Long time since Deb and I have conversed. A...

Long time since Deb and I have conversed. A fine lady and one can only be happy for an award such as this for her.
Forum: Tech Log
12th Jun 2019, 08:36
Replies: 23
Views: 5,038
Posted By john_tullamarine

Why is the takeoff minimum acceleration height...

Why is the takeoff minimum acceleration height 400 ft but the go-around is 800 feet?

400 ft third segment is historical and based on early ICAO documents. I am not aware of any standardised...
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