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Search: Posts Made By: chris lz
Showing results 1 to 35 of 49
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Forum: Tech Log
10th Dec 2020, 01:17
Replies: 32
Views: 7,157
Posted By chris lz

As long as I'm not in the cross hairs of any...

As long as I'm not in the cross hairs of any skirmishes.

Thank you ALL for your replies.
Forum: Tech Log
8th Dec 2020, 05:20
Replies: 32
Views: 7,157
Posted By chris lz

Is this a common practice in wet conditions?

Is this a common practice in wet conditions?
Forum: Tech Log
8th Dec 2020, 03:03
Replies: 32
Views: 7,157
Posted By chris lz

take off rev hold

Circumstance: date Jan 1996, TWA 767-200


I am trying to see if anyone can shed light on my memory, which could be all off as it is now very vague, and 25 years ago. It was I believe a somewhat...
Forum: Spectators Balcony (Spotters Corner)
25th Mar 2015, 18:51
Replies: 10
Views: 4,475
Posted By chris lz

Are you aware of this incident? There was a...

Are you aware of this incident?

There was a case of a Lufthansa crew at London who commenced take off after receiving a delayed airways clearance. So confident were they that they had received a...
Forum: Spectators Balcony (Spotters Corner)
25th Mar 2015, 18:29
Replies: 10
Views: 4,475
Posted By chris lz

Thank you again. While we're at it, maybe...

Thank you again.

While we're at it, maybe you could help solve one more mystery for me. It has been mentioned from time to time that the KLM was given this message from ATC:

"Cleared for...
Forum: Spectators Balcony (Spotters Corner)
25th Mar 2015, 09:13
Replies: 10
Views: 4,475
Posted By chris lz

. And would it be your guess that yours...

.


And would it be your guess that yours is the "standard" view among commercial pilots and ATCs? I cannot conceive of many that would disagree with you. On the other hand, the view that VZ...
Forum: Spectators Balcony (Spotters Corner)
25th Mar 2015, 09:05
Replies: 10
Views: 4,475
Posted By chris lz

to DaveReidUK Thank you, Are you...

to DaveReidUK

Thank you,

Are you suggesting that it is still widely debated? I am under the impression that the consensus view in the industry is that VZ was convinced he had the clearance and...
Forum: Spectators Balcony (Spotters Corner)
25th Mar 2015, 03:14
Replies: 10
Views: 4,475
Posted By chris lz

Tenerife (sorry, but I just can't help myself)

For commercial pilots especially,

It's anniversary time for Tenerife, and Youtubers are in full swing with their endless Van Zanten the arrogant, ego-driven pilot, or even murder posts.

Today...
Forum: Australia, New Zealand & the Pacific
23rd Jan 2012, 01:51
Replies: 624
Views: 76,171
Posted By chris lz

Lucas

ampan/prospector,

Interesting, thanks.
Forum: Australia, New Zealand & the Pacific
18th Jan 2012, 19:00
Replies: 624
Views: 76,171
Posted By chris lz

Ampan, Can you or anyone fill me in on the...

Ampan,

Can you or anyone fill me in on the alleged discontent of Lucas on F901?
Forum: Australia, New Zealand & the Pacific
27th Dec 2011, 08:57
Replies: 624
Views: 76,171
Posted By chris lz

Now before I forget, can someone fill me in on...

Now before I forget, can someone fill me in on the alleged possible discontent of F/E Lucas? I can't find a thing on this.
Forum: Australia, New Zealand & the Pacific
22nd Dec 2011, 03:27
Replies: 624
Views: 76,171
Posted By chris lz

Thanks prospector. I recall that what we...

Thanks prospector.

I recall that what we covered was that instruments on the ground, being regularly calibrated, are less likely to give false information than an INS. But in the case of radar at...
Forum: Australia, New Zealand & the Pacific
22nd Dec 2011, 02:21
Replies: 624
Views: 76,171
Posted By chris lz

prospector/ framer Getting back to ampan's...

prospector/ framer

Getting back to ampan's point about placing one's trust in controllers who are human and therefore may make mistakes (or even get drunk), he questions why relying on ground...
Forum: Australia, New Zealand & the Pacific
22nd Dec 2011, 02:10
Replies: 624
Views: 76,171
Posted By chris lz

Don't think that's correct, at least in the...

Don't think that's correct, at least in the Chippindale report itself, which has the airplane in clear air, but flying toward an area the crew should have recognized as requiring IFR, i.e. towards a...
Forum: Australia, New Zealand & the Pacific
21st Dec 2011, 22:25
Replies: 624
Views: 76,171
Posted By chris lz

For anyone: Let me make sure I have...

For anyone:

Let me make sure I have everything straight. With the NDB assumed as non operational, and the TACAN incapable of giving bearing info, the only means the crew of F901 had (at the time...
Forum: Australia, New Zealand & the Pacific
21st Dec 2011, 06:56
Replies: 624
Views: 76,171
Posted By chris lz

framer/prospector, In addition to what...

framer/prospector,

In addition to what ampan has written, could you explain for the benefit of the ignorant if the TACAN at McMurdo was capable of providing both distance and bearing info, thus...
Forum: Australia, New Zealand & the Pacific
21st Dec 2011, 06:45
Replies: 624
Views: 76,171
Posted By chris lz

Certainly ATC have guided aircraft to their...

Certainly ATC have guided aircraft to their demise in the past. I also know of at least one case were instruments on the ground were faulty and probably caused a crash. That said, before proceeding,...
Forum: Australia, New Zealand & the Pacific
20th Dec 2011, 17:57
Replies: 624
Views: 76,171
Posted By chris lz

In regard to 2) above, just curious how this...

In regard to 2) above, just curious how this strikes you:


- The crew's reliance on AINS resulted in plane hitting mountain

- The crew's reliance on ground aids would not have resulted in...
Forum: Australia, New Zealand & the Pacific
20th Dec 2011, 06:08
Replies: 624
Views: 76,171
Posted By chris lz

Thanks. This is precisely the kind of nuance...

Thanks. This is precisely the kind of nuance that's key to one's understanding. Maybe my assumption is incorrect. Let's be very specific: to other pilots still tuning in:

1) is there a formal...
Forum: Australia, New Zealand & the Pacific
20th Dec 2011, 02:13
Replies: 624
Views: 76,171
Posted By chris lz

Thanks - I've only looked at the Chippindale...

Thanks - I've only looked at the Chippindale report proper and don't recall seeing this.




That's what I used to think until I encountered commercial pilots on internet forums. How many do...
Forum: Australia, New Zealand & the Pacific
19th Dec 2011, 08:48
Replies: 624
Views: 76,171
Posted By chris lz

FGD135...

FGD135 (http://www.pprune.org/members/237338-fgd135),

Thank you for your reply. I am not one of those who say this was just another ordinary CFIT. So whatever Collins misjudgements regarding AINS...
Forum: Australia, New Zealand & the Pacific
17th Dec 2011, 23:57
Replies: 624
Views: 76,171
Posted By chris lz

But that's debatable. Their certainty was based...

But that's debatable. Their certainty was based on trusting AINS. It probably should not have been. The logic makes more sense after reading framer's response to my AINS question: he stated he's...
Forum: Australia, New Zealand & the Pacific
16th Dec 2011, 17:44
Replies: 624
Views: 76,171
Posted By chris lz

DozyWannabe, My apology. In hindsight that...

DozyWannabe,

My apology. In hindsight that what I wrote above was (unintentionally) insenstive and presumptuous. I was referring more to me, because I was, in in fact, "taken in" by Vette in the...
Forum: Australia, New Zealand & the Pacific
16th Dec 2011, 07:35
Replies: 624
Views: 76,171
Posted By chris lz

Well I certainly can relate to that! Not...

Well I certainly can relate to that!

Not to be ganging up on Dozy, but I do know the "spell" that Vette's book can have on lay readers. Sometimes an unstated assumption drives a belief. For me,...
Forum: Australia, New Zealand & the Pacific
16th Dec 2011, 05:31
Replies: 624
Views: 76,171
Posted By chris lz

prospecter, I came to read Vette's book...

prospecter,

I came to read Vette's book before talking to pilots, and I have to say he had me convinced. It was only later that I felt I could not defend my positions while debating with pilots...
Forum: Australia, New Zealand & the Pacific
16th Dec 2011, 02:38
Replies: 624
Views: 76,171
Posted By chris lz

prospector, I have the feeling most lay...

prospector,

I have the feeling most lay people familiar with the accident tend to agree with the Royal Commission's conclusion, but that pilots, in general, tend not to. Is this impression yours...
Forum: Australia, New Zealand & the Pacific
15th Dec 2011, 16:48
Replies: 624
Views: 76,171
Posted By chris lz

DC-10 seating

Dozy,

The Chippindale report mentions that 21 seats were left empty. The DC-10, as configured by most airlines at the time, was for 250-300. 330-350 may have been closer to the norm in more...
Forum: Australia, New Zealand & the Pacific
15th Dec 2011, 02:13
Replies: 624
Views: 76,171
Posted By chris lz

prospector, I appreciate your detailed...

prospector,

I appreciate your detailed response to AINS.





What I'm hearing you say is, the crew was for all intents and purposes relying, by the back door route, on AINS. Take away...
Forum: Australia, New Zealand & the Pacific
14th Dec 2011, 03:59
Replies: 624
Views: 76,171
Posted By chris lz

So, is this a fair translation: 1) AINS...

So, is this a fair translation:


1) AINS is inherently less trustworthy than ground aids

2) The primary reason is because ground aids are calibrated regularly.

3) Therefore, AINS should...
Forum: Australia, New Zealand & the Pacific
14th Dec 2011, 02:06
Replies: 624
Views: 76,171
Posted By chris lz

Prospector, as a retired pilot, would you care to...

Prospector, as a retired pilot, would you care to speculate in general terms on the shortcomings of AINS as compared with ground based radar.

Thanks
Forum: Australia, New Zealand & the Pacific
14th Dec 2011, 01:15
Replies: 624
Views: 76,171
Posted By chris lz

Yes, I'm quite aware of that. But what I would...

Yes, I'm quite aware of that. But what I would ask you, and others who take the "Vette position" is, in the absence of AINS, do you really think the crew would have had the confidence they did?
...
Forum: Australia, New Zealand & the Pacific
14th Dec 2011, 00:40
Replies: 624
Views: 76,171
Posted By chris lz

Basic principles

For pilots:

I still don't feel, despite the incredibly informative discussion, that I've completely graduated from Erebus 101. In previous posts I've made the assumption AINS is not as reliable...
Forum: Australia, New Zealand & the Pacific
12th Dec 2011, 02:21
Replies: 624
Views: 76,171
Posted By chris lz

Dozy, I concede we can't know for sure...

Dozy,

I concede we can't know for sure exactly what the crew saw, since only they were there at the time. But everyone seems to agree that most of the land area was cloud covered, including all...
Forum: Australia, New Zealand & the Pacific
11th Dec 2011, 06:16
Replies: 624
Views: 76,171
Posted By chris lz

Thanks again Dozy for your detailed thoughts....

Thanks again Dozy for your detailed thoughts. Yes, we have gone over this before. But. . . .



Let's forget Erebus for a moment and speak in general terms. Could we agree that because AINS (in...
Forum: Australia, New Zealand & the Pacific
11th Dec 2011, 05:24
Replies: 624
Views: 76,171
Posted By chris lz

FDG, thank you for your reply. I'm aware the crew...

FDG, thank you for your reply. I'm aware the crew of 901 elected a visual let-down. That means to me that they needed certainty of position before they started down. But clearly they did not have...
Showing results 1 to 35 of 49
 
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