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Search: Posts Made By: DaveReidUK
Showing results 1 to 35 of 44
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Forum: Rumours & News
17th Jan 2017, 13:05
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

The two theories aren't mutually exclusive. ...

The two theories aren't mutually exclusive.

Once the engines quit, the question of whether or not the aircraft was flying on autopilot up to that point becomes academic.
Forum: Rumours & News
9th Mar 2015, 17:35
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Thanks for the link. But I'm afraid I...

Thanks for the link.

But I'm afraid I stopped reading at
Forum: Rumours & News
23rd Dec 2014, 16:44
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

He assumes a constant TAS and true track for the...

He assumes a constant TAS and true track for the last two and a half hours of flight. If either of those varied, his final position calculation will be wrong.
Forum: Rumours & News
29th Sep 2014, 06:28
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

How would that have made any difference? The...

How would that have made any difference?

The aircraft was off-track, not transmitting, and the only data that was subsequently able to give clues as to its possible whereabouts didn't emerge until...
Forum: Rumours & News
25th Sep 2014, 21:49
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

I can't speak for the C-5, but the P-3 certainly...

I can't speak for the C-5, but the P-3 certainly has.

Either way, you're right in that the subject of ejectable ELTs has been done to death.

While it might seem unreasonable to suggest that...
Forum: Rumours & News
12th May 2014, 11:06
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

No argument there. But read what I said: I...

No argument there. But read what I said:

I didn't say that SSR was required to track it, but if it's out of range of SSR (say 200nm max), then it's surely beyond the range of primary radar, too. ...
Forum: Rumours & News
12th May 2014, 06:30
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

No. Regardless of what was or wasn't...

No.

Regardless of what was or wasn't functioning on board, it would only have been trackable while within range of SSR.
Forum: Rumours & News
30th Apr 2014, 05:58
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

You are mistaken. Their website appears to date...

You are mistaken. Their website appears to date back to June of last year:

http://web.archive.org/web/20130604173645/http://georesonance.com/
Forum: Rumours & News
18th Apr 2014, 06:42
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

In fact Annex 13 would not apply anyway (cf...

In fact Annex 13 would not apply anyway (cf 9/11), if the wreckage and recorders were to be found and if it transpired that the fate of MH370 was the result of a deliberate act by a person or persons...
Forum: Rumours & News
3rd Apr 2014, 15:47
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Why is there a requirement that any assumptions...

Why is there a requirement that any assumptions should be made ?
Forum: Rumours & News
3rd Apr 2014, 07:03
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

That's not how I read it. Australia is not...

That's not how I read it.

Australia is not representing Malaysia, poor choice of words on the journalist's part. Australia is an accredited representative to the investigation, which is only to...
Forum: Rumours & News
31st Mar 2014, 15:56
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

A USN P-8A has in fact been deployed in the...

A USN P-8A has in fact been deployed in the search area for the last two weeks, and was joined by a second one a few days ago.
Forum: Rumours & News
29th Mar 2014, 08:00
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Flight planning 101

I can't believe we've needed 50-odd posts to try to explain what was crystal clear in the original ATSB statement - that in the early stages of the flight, the aircraft burned more fuel than had...
Forum: Rumours & News
28th Mar 2014, 23:32
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Read the ATSB statement quoted in this post: ...

Read the ATSB statement quoted in this post:

http://www.pprune.org/rumours-news/535538-malaysian-airlines-mh370-contact-lost-286.html#post8406162

and come back if you still don't understand.
Forum: Rumours & News
26th Mar 2014, 08:55
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

That would make the safety demonstration very...

That would make the safety demonstration very interesting - by the time you have shown 300+ pax how to don pressurised masks and then how to breathe through them, you'd be at your destination.

And...
Forum: Rumours & News
25th Mar 2014, 18:34
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Why is the MH370 R-R engine monitoring data pushed away out of sight?

Well they probably could, retrospectively, in the case of a normal flight - my understanding is that the EHM system stores half-hourly data snapshots for transmission once an ACARS link becomes...
Forum: Rumours & News
25th Mar 2014, 08:02
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

I believe the "beancounter" comment was made in...

I believe the "beancounter" comment was made in respect of the ULBs (Underwater Locator Beacons) attached to the FDR and CVR.

Given that those are beacons to help in locating said objects...
Forum: Rumours & News
24th Mar 2014, 22:29
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Demonstrating that there is an absence of proof...

Demonstrating that there is an absence of proof for a hypothesis does not necessitate having to prove the opposite.
Forum: Rumours & News
24th Mar 2014, 09:42
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

No. Read up on altitude encoding/decoding. ...

No. Read up on altitude encoding/decoding.

No matter how many bits of the AC may have been corrupted, if any, it will still only resolve to an altitude that's a multiple of 25' or 100',...
Forum: Rumours & News
24th Mar 2014, 08:21
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Neither you nor I know exactly how FlightRadar24...

Neither you nor I know exactly how FlightRadar24 processes the data it gets from enthusiasts, so I certainly wouldn't make any assumptions about the astuteness, or otherwise, or their programmer(s)....
Forum: Rumours & News
24th Mar 2014, 00:15
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Your assumption isn't valid. Those are not...

Your assumption isn't valid. Those are not original ADS-B transmissions, they are FlightRadar24's processed data, originating from enthusiast Mode S receivers with software that may also have done...
Forum: Rumours & News
21st Mar 2014, 23:35
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

"Plausible" only in the sense that, in the...

"Plausible" only in the sense that, in the absence of any firm evidence to the contrary, pretty well any hypothesis that anyone can dream up can't, strictly speaking, be ruled out.

That would of...
Forum: Rumours & News
21st Mar 2014, 18:11
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

The arc isn't a track. :ugh: It's the set...

The arc isn't a track. :ugh:

It's the set of possibilities for the position at the time of the final exchange with the satellite. And no, it's not a Great Circle.
Forum: Rumours & News
21st Mar 2014, 18:04
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

"Ping", which judging from the interview with the...

"Ping", which judging from the interview with the Inmarsat VP isn't a term they actually use, clearly implies a ping-and-response sequence in this context. Except in the case of the final ping, of...
Forum: Rumours & News
21st Mar 2014, 12:58
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

I very much doubt that they can derive altitude,...

I very much doubt that they can derive altitude, for two reasons.

The aircraft is a minimum of 36,000km from the satellite. So the difference between, say, FL280 and FL410 represents around...
Forum: Rumours & News
21st Mar 2014, 12:34
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

A bit of confusion here. In this context,...

A bit of confusion here.

In this context, 3.5 ft/s is indeed a velocity - specifically it's the change in longitudinal velocity required to activate the ELT, provided that's also accompanied by a...
Forum: Rumours & News
19th Mar 2014, 08:08
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

It's by no means certain that Inmarsat have...

It's by no means certain that Inmarsat have access to any stored (ephemeral) data on any but the last ping.
Forum: Rumours & News
19th Mar 2014, 00:21
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Well no, actually. If the spacing between arcs 1...

Well no, actually. If the spacing between arcs 1 and 2 is less than the distance that the aircraft is likely to have flown in the hour, that tells us that the average track angle was somewhere...
Forum: Rumours & News
18th Mar 2014, 19:46
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Why so? You can construct a GC between any two...

Why so? You can construct a GC between any two points on the globe, including any pair of points on that arc.

We only know that the aircraft was equidistant from the satellite at two specific...
Forum: Rumours & News
18th Mar 2014, 19:02
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

The circles (assuming that more than one could be...

The circles (assuming that more than one could be plotted, which now seems in doubt) would be 60 minutes apart, because that's how often the satellite pings the aircraft.

The only deduction that...
Forum: Rumours & News
18th Mar 2014, 16:42
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Either that, or it's simply the case that up to...

Either that, or it's simply the case that up to now nobody asked the only people (Inmarsat) who were in a position to answer the question.

But I'm struggling to see what would be the point of the...
Forum: Rumours & News
14th Mar 2014, 23:06
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Kudos to the former AAIB investigator who was the...

Kudos to the former AAIB investigator who was the only person on Channel 5's panel who declined the invitation at the close of the programme to speculate on what was behind MH370's disappearance.
...
Forum: Rumours & News
14th Mar 2014, 19:11
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

There is no evidence that the aircraft sent...

There is no evidence that the aircraft sent erroneous data for altitude (i.e. zero), speed or position, nor at this stage any reason to believe that it might have done.

I thought we had disposed...
Forum: Rumours & News
14th Mar 2014, 09:47
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Investigators from Rolls-Royce and the UK AAIB...

Investigators from Rolls-Royce and the UK AAIB reportedly enroute to KL.
Forum: Rumours & News
13th Mar 2014, 18:08
Replies: 11,831
Views: 24,151,573
Posted By DaveReidUK

Yes, that's a pretty good analogy. The confusion...

Yes, that's a pretty good analogy. The confusion in previous posts probably arises because "Aircraft ID" (ACID) is the term used in the ADS-B spec for the crew-configurable callsign/flight number,...
Showing results 1 to 35 of 44
 
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