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Search: Posts Made By: cf6-80c2b5f
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Forum: Tech Log
22nd Apr 2016, 18:55
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks, BBK. You may very well be right about the...

Thanks, BBK. You may very well be right about the different modification states. Whether it was a delivery option from the factory or a subsequent modification, it would be interesting to know the...
Forum: Tech Log
21st Apr 2016, 19:52
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

There have been reports on this thread that are...

There have been reports on this thread that are contrary to the above, unless you take the first sentence as meaning that none of the description that follows the first sentence applies to a manual...
Forum: Tech Log
20th Apr 2016, 10:02
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

BBK: I'm not sure why you feel compelled to...

BBK:

I'm not sure why you feel compelled to police the forum for questions that you believe are inappropriate simply because "in [your] company, [it] shouldn't occur anyway." Really, you should...
Forum: Tech Log
19th Apr 2016, 19:07
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

It's a "hypothetical question" until it causes an...

It's a "hypothetical question" until it causes an accident, like the Asian 777 in SFO. If you're happy being ignorant about this, you can always skip this string. Thanks again for your valuable...
Forum: Tech Log
19th Apr 2016, 01:20
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

That pretty much restates my original question in...

That pretty much restates my original question in a more concise way. So far, we've got peole saying it behaves the same as the autoland and people saying it stays in SPD until anywhere from 25' RA...
Forum: Tech Log
16th Apr 2016, 23:20
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Good to hear from you, JammedStab. It doesn't...

Good to hear from you, JammedStab.
It doesn't go to SPD on touchdown; what was seen in the sim was that somewhere below 5' the SPD FMA just went blank and on touchdown the throttles remained...
Forum: Tech Log
16th Apr 2016, 07:16
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Well, that blows my theory. I was hoping you...

Well, that blows my theory. I was hoping you would say it had the NG software. Thanks again for trying this, Silberfuchs.
Forum: Tech Log
16th Apr 2016, 06:15
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks! Did this -400 have the NG software? If...

Thanks! Did this -400 have the NG software? If so, it's looking like the NG software is the reason for the IDLE at 25' versus just going from SPD to blank when below 5' for 2 seconds.
Forum: Tech Log
12th Apr 2016, 08:11
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Still hoping to hear from Silberfuchs.

Still hoping to hear from Silberfuchs.
Forum: Tech Log
9th Apr 2016, 19:59
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Well this totally throws a monkey wrench into the...

Well this totally throws a monkey wrench into the spokes! Thanks for the feedback CCA. Looking forward to hearing Silberfuchs' experience.
Forum: Tech Log
9th Apr 2016, 08:18
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks. I'm looking at my FCOM and this is what...

Thanks. I'm looking at my FCOM and this is what it says under the autoland section:

Could there be a software revision or specific airline setting that would account for the disparity?
Forum: Tech Log
9th Apr 2016, 01:50
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

I can only go by what the A/T does when in...

I can only go by what the A/T does when in autoland. If manual is the same as autoland, there is no HOLD.

What is not clear to me is when the A/T actually goes from IDLE to blank.

Is it:
...
Forum: Tech Log
8th Apr 2016, 23:40
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks for the input, Captain. It is...

Thanks for the input, Captain.

It is interesting. None of my books says anything about how the A/T will behave during a manual landing. During a manual landing, as you know, you are not going to...
Forum: Tech Log
8th Apr 2016, 09:36
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

It's hard to tell whether you are being sarcastic...

It's hard to tell whether you are being sarcastic or just daft. Do you think Boeing would have not thought to provide better warnings about the FLCH trap?

Irrespective, if the original question...
Forum: Tech Log
8th Apr 2016, 08:06
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

I am not advocating use of the A/T on a manual...

I am not advocating use of the A/T on a manual landing. As I said in my first post, this is theoretical. I eventually got my answer.

Incidentally, the Asiana crew in SFO never planned on...
Forum: Tech Log
8th Apr 2016, 03:33
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Yes, it is.

Yes, it is.
Forum: Tech Log
8th Apr 2016, 03:22
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

When I transitioned from the DC-8 to the DC-10...

When I transitioned from the DC-8 to the DC-10 back in 2000 the A/T was a novel feature -- It actually worked on every airplane. Imagine that.
Forum: Tech Log
8th Apr 2016, 03:10
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks. Just to be sure we are both on the same...

Thanks. Just to be sure we are both on the same sheet of music -- and I think we are -- this is for a manual landing (without the autopilot). I'm pretty sure that's what you mean. If so, your manuals...
Forum: Tech Log
8th Apr 2016, 03:03
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

If your 744 manuals even mention a distance (15'...

If your 744 manuals even mention a distance (15' or 25') they are miles ahead of anything I can find. I sure would like to see something on this in writing if it's not too much trouble. So, you are...
Forum: Tech Log
8th Apr 2016, 02:45
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Very good!. Thanks! This largely confirms what I...

Very good!. Thanks! This largely confirms what I am hearing from someone who just tried it in a sim. I would have bet that the A/T would disconnect on manual landing at least by touchdown if not by...
Forum: Tech Log
5th Apr 2016, 19:02
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Exactly! That makes at least two of us who don't...

Exactly! That makes at least two of us who don't know. Thanks.
Forum: Tech Log
5th Apr 2016, 06:41
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

I don't think it's wrong -- it just doesn't...

I don't think it's wrong -- it just doesn't explain it very well. If you are descending in SPD mode on the A/T (say SPD||V/S) and you manually override the throttles by pulling the power back, the...
Forum: Tech Log
5th Apr 2016, 02:11
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

I don't know if it's a misprint. I think that...

I don't know if it's a misprint. I think that since TOGA is disabled below 5' for 2 seconds, there is also something that affects the A/T at this point. Or, maybe TOGA is disabled precisely because...
Forum: Tech Log
5th Apr 2016, 00:46
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

FLCH is a special situation. When the throttles...

FLCH is a special situation. When the throttles are manually overridden in FLCH, or they automatically reach the idle stop on their own (for an idle descent), the FMA will indicate HOLD and the...
Forum: Tech Log
5th Apr 2016, 00:26
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Correct, NSEU -- No need to throw that into the...

Correct, NSEU -- No need to throw that into the mix too. For the hypothetical, we just won't select reverse at all.
Not to change the subject, but this sounds like what would occur when in FLCH...
Forum: Tech Log
4th Apr 2016, 22:46
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

None of the Boeing or company manuals I have...

None of the Boeing or company manuals I have addresses my question. That's why I'm throwing it out here in hopes that someone might know. Granted that landing without using at least idle reverse is...
Forum: Tech Log
4th Apr 2016, 22:12
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Well, if you are now speaking for Percy, then...

Well, if you are now speaking for Percy, then maybe you can explain how the A/T can "remain[] armed throughout" but the "A/T will not do anything."

My books don't address this issue, as I'm sure...
Forum: Tech Log
4th Apr 2016, 20:17
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Percy: Then you are saying that the A/T will...

Percy: Then you are saying that the A/T will attempt to maintain the MCP speed upon touchdown on a manual landing if no reverse is used?

Zero: You are describbing an autoland and that is...
Forum: Tech Log
4th Apr 2016, 08:51
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

I am aware of the dead zone, but I never...

I am aware of the dead zone, but I never questioned the reason for it. Could it be that TOGA doesn't work below 5' because the throttles are disabled for manual landings? What other reason would...
Forum: Tech Log
4th Apr 2016, 00:03
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Like you, I have made all my manual landings...

Like you, I have made all my manual landings looking out the front. That's why neither of us knows exactly what is going on with the A/T at that point (e.g., Does it go to idle or hold? Does the FMA...
Forum: Tech Log
3rd Apr 2016, 22:57
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

So we both agree that below 5' for more than 2...

So we both agree that below 5' for more than 2 seconds disables (for lack of a more descriptive word) the A/T for purposes of TOGA.

The question I have is on a manual landing, what is the effect...
Forum: Tech Log
3rd Apr 2016, 22:15
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

But only if you are above 5'.

But only if you are above 5'.
Forum: Tech Log
3rd Apr 2016, 19:27
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

Thanks for the reply, Eckhard, but you are...

Thanks for the reply, Eckhard, but you are describing the autoland. You won't get those FMA indications like FLARE and ROLLOUT on a manual landing.
Forum: Tech Log
3rd Apr 2016, 09:45
Replies: 70
Views: 18,107
Posted By cf6-80c2b5f

B744 Autothrottle on Manual Landing

I was going through an old study guide and read something that I was not aware of with regard to the autothrottle. It may not even be true, but I was hoping to get some feedback here on the forum:
...
Showing results 1 to 34 of 34


 
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