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Search: Posts Made By: GlobalNav
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Forum: Tech Log
27th Feb 2014, 16:51
Replies: 1,033
Views: 502,348
Posted By GlobalNav

Thumbs up @ PJ2 totally agree with you and look forward to...

@ PJ2 totally agree with you and look forward to more insightful comments from yourselff, MM43 and others.
Forum: Tech Log
27th Feb 2014, 02:13
Replies: 1,033
Views: 502,348
Posted By GlobalNav

@mm43 NTSB has done a lot of the work for...

@mm43

NTSB has done a lot of the work for you in a very illustrative plot, Figure 9b of the Aircraft Performance Group Report. FWIW

URL for NTSB Aircraft Performance Group Report:
Document...
Forum: Tech Log
24th Feb 2014, 17:13
Replies: 1,033
Views: 502,348
Posted By GlobalNav

PAPI "Issue" is Irrelevent

That the TCH was 47.7 ft, not 60-75 ft, which is the minimum for Height Group 4 (A300), is not relevant to this accident, considering the events, in my opinion.

Had the crew paid any attention to...
Forum: Tech Log
20th Sep 2013, 15:35
Replies: 1,033
Views: 502,348
Posted By GlobalNav

"C. Donald Bateman, the primary inventor of both...

"C. Donald Bateman, the primary inventor of both GPWS and EGPWS (along with the patents underpinning both) was very much as much a safety advocate as he was an engineer."

Mr Bateman is a bonafide...
Forum: Tech Log
2nd Sep 2013, 16:40
Replies: 1,033
Views: 502,348
Posted By GlobalNav

Perhaps I misunderstood the original question. ...

Perhaps I misunderstood the original question. All I meant was that GPS or not, RNAV or not, the pilot is required to fly the published procedure, meeting all of the altitude restrictions and other...
Forum: Tech Log
2nd Sep 2013, 15:06
Replies: 1,033
Views: 502,348
Posted By GlobalNav

Question "Re map shift, I very much doubt whether any...

"Re map shift, I very much doubt whether any authority would allow NPAs to be flown today in non-GPS augmented aeroplanes without stringent monitoring of the raw data, if at all."

I don't know...
Forum: Tech Log
30th Aug 2013, 22:55
Replies: 1,033
Views: 502,348
Posted By GlobalNav

Excellent find on an interesting piece of...

Excellent find on an interesting piece of information.

Using 3.2 deg angle and considering the difference of 27 ft (75ft -48 ft), the difference in touchdown point would shorten touchdown...
Forum: Tech Log
24th Aug 2013, 13:56
Replies: 1,033
Views: 502,348
Posted By GlobalNav

"Many accidents have happened in the past when...

"Many accidents have happened in the past when undesired high rates of descent developed when both crewmembers were involved in attaining visual contact/references with the runway/lights/PAPI...
Forum: Tech Log
23rd Aug 2013, 18:23
Replies: 1,033
Views: 502,348
Posted By GlobalNav

You are correct: V/S vs Rad Alt Logic

There is a published formula that describes the "SINK RATE" alert logic which is a function of V/S and Radio Altitude. UPS would have had a VS higher than -1000 FPM (perhaps more like -1200) for the...
Forum: Tech Log
21st Aug 2013, 21:52
Replies: 1,033
Views: 502,348
Posted By GlobalNav

High sink rate?

The late EQPWS alerts might seem consistent with a higher than normal sink rate. What might account for a high sink rate in the visual segment?
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