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Search took 0.42 seconds. Search: Posts Made By: mfeldt
Forum: Aviation Safety Discussion Forum 02-05-2013, 07:40 AM
Replies: 160
Views: 13,052
Posted By mfeldt
THere's an article in the Seattle Times quoting...

THere's an article in the Seattle Times quoting some Boeing engineers stating that the batteries are actually only the tip of the iceberg, whilst the base is the power panels:
...
Forum: Aviation Safety Discussion Forum 01-17-2013, 11:45 AM
Replies: 160
Views: 13,052
Posted By mfeldt
Is that some standard duration, or do you have...

Is that some standard duration, or do you have some basis for that guess?

Since the goal is to convince FAA that the batteries are safe, what can they do and how long would it take?

An interim...
Forum: Aviation Safety Discussion Forum 01-17-2013, 07:14 AM
Replies: 160
Views: 13,052
Posted By mfeldt
I guess that is not so easy, as Li-ion was of...

I guess that is not so easy, as Li-ion was of course chosen for a reason: In the 787 many systems are operated electrically that conventionally were powered hydraulically or by something else. ...
Forum: Aviation Safety Discussion Forum 01-16-2013, 02:44 PM
Replies: 160
Views: 13,052
Posted By mfeldt
A german newspaper (>Der Spiegel< again...)...

A german newspaper (>Der Spiegel< again...) quotes the batteries as the primary concern. Li-Ion batteries apparently used for the first time in aviation, quite dangerous with respect to fire...
Forum: Aviation Safety Discussion Forum 10-06-2011, 02:47 PM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Just seen on, er... bloomberg.com: ...

Just seen on, er... bloomberg.com:
http://www.bloomberg.com/news/2011-10-05/air-france-flight-447-crash-probe-shows-confused-crew-misread-instruments.html
Forum: Aviation Safety Discussion Forum 06-01-2011, 02:54 PM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Der Spiegel and Prof. Hüttig again...: ...

Der Spiegel and Prof. Hüttig again...:


Victims' Families Propose Grounding All A330s


http://www.spiegel.de/international/world/0,1518,766148,00.html
Forum: Aviation Safety Discussion Forum 05-12-2011, 07:06 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Indeed - but not indefinitely. It has been two...

Indeed - but not indefinitely. It has been two years now, that's a long time for the pressure to work!
Forum: Aviation Safety Discussion Forum 05-09-2011, 09:27 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Since I'm clearly one of the non-experts here,...

Since I'm clearly one of the non-experts here, would everybody forgive me my possibly naive question...

I've now read many times here about the proximity of the coffin corner or its variants as a...
Forum: Aviation Safety Discussion Forum 05-09-2011, 09:09 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Since the total numbers of a/c losses is not...

Since the total numbers of a/c losses is not large, you will easily end up with only very few or even no accidents at all in each category when you split up by too many variables. No need to try and...
Forum: Aviation Safety Discussion Forum 04-04-2011, 11:11 AM
Replies: 25
Views: 4,636
Posted By mfeldt
http://en.wikipedia.org/wiki/Birgenair_Flight_301

http://en.wikipedia.org/wiki/Birgenair_Flight_301
Forum: Aviation Safety Discussion Forum 07-28-2010, 01:22 PM
Replies: 29
Views: 2,788
Posted By mfeldt
A Colleague of mine was on a UA flight FRA-IAD on...

A Colleague of mine was on a UA flight FRA-IAD on July 2nd or around that date and reported the air condition worked intermittently in the forward section - 20 minutes freezing and 20 minutes...
Forum: Aviation Safety Discussion Forum 07-21-2010, 01:19 PM
Replies: 37
Views: 3,767
Posted By mfeldt
Most of this is true during takeoff as well, or?...

Most of this is true during takeoff as well, or? I remember once a pilot told me that (for him) actually take-off is the most tense phase of the flight, the stress on aircraft components being much...
Forum: Aviation Safety Discussion Forum 07-21-2010, 01:01 PM
Replies: 26
Views: 2,978
Posted By mfeldt
In this case, one person was reported to have...

In this case, one person was reported to have her head banged against the cabin wall - I guess this can also happen when the belt is buckled.

Flying to the ceiling, as was reported for another...
Forum: Aviation Safety Discussion Forum 07-12-2010, 12:59 PM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Appears a reasonable scenario ... only: Did the...

Appears a reasonable scenario ... only: Did the ACARS messages not imply a time span of just 4 minutes between 2 and 6 (assuming that the cabin vertical speed warning also appeared on the flight...
Forum: Aviation Safety Discussion Forum 07-12-2010, 12:43 PM
Replies: 31
Views: 2,773
Posted By mfeldt
I don't really get the purpose of this thread......

I don't really get the purpose of this thread... usually fatality statistics are shown by the airline industry in order to prove to people who may feel uneasy about flying that the transportation...
Forum: Aviation Safety Discussion Forum 06-23-2010, 11:41 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
I think there is a dedicated thread on this, but...

I think there is a dedicated thread on this, but for short:

JPEG is lossy compression, you want to do that to data.
In fact, when transmitting basically a stream of numbers, there is very...
Forum: Aviation Safety Discussion Forum 05-19-2010, 11:28 AM
Replies: 97
Views: 13,759
Posted By mfeldt
Oh .. I missed that. Water is also in the...

Oh .. I missed that. Water is also in the statistics and it's almost always worse than flying ... how far back does the statisctics reach? Titanic?
Forum: Aviation Safety Discussion Forum 05-19-2010, 09:09 AM
Replies: 97
Views: 13,759
Posted By mfeldt
It helps to look at actual numbers, not just...

It helps to look at actual numbers, not just keywords...

Although I generally dislike Wikipedia, they have this excellent comparison on deaths per kilometer, per hour, and per journey. When...
Forum: Aviation Safety Discussion Forum 05-12-2010, 11:30 AM
Replies: 248
Views: 47,080
Posted By mfeldt
But the tail looks pretty attached to a piece of...

But the tail looks pretty attached to a piece of fuselage that broke off with it - unlike AF 447 and AA

m.
Forum: Aviation Safety Discussion Forum 05-10-2010, 10:59 AM
Replies: 156
Views: 13,800
Posted By mfeldt
After my citation of an article of "Der Spiegel"...

After my citation of an article of "Der Spiegel" in th ethread about AF447, here's now another one....

I don't know whether it will ever be available in english, but here's the link:...
Forum: Aviation Safety Discussion Forum 05-07-2010, 08:25 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Well, North-South it's about 7km, East-West...

Well, North-South it's about 7km, East-West more like 10.

m.
Forum: Aviation Safety Discussion Forum 04-19-2010, 01:12 PM
Replies: 156
Views: 13,800
Posted By mfeldt
Clouds are normally visible at night, too. Even...

Clouds are normally visible at night, too. Even in a very dark & moonless night one would notice the absence of stars in a direction where the weather radar shows nothing but clear sky.

That...
Forum: Aviation Safety Discussion Forum 04-19-2010, 11:56 AM
Replies: 156
Views: 13,800
Posted By mfeldt
AP...

AP (http://www.google.com/hostednews/ap/article/ALeqM5gOf6EkFL_a2lZK_hHNlDWEig3uXwD9F63E6G4)
Forum: Aviation Safety Discussion Forum 04-19-2010, 11:40 AM
Replies: 156
Views: 13,800
Posted By mfeldt
+ possible sensor equipment vulnerability - maybe...

+ possible sensor equipment vulnerability - maybe we should ask Thales again about their pitot devices...


m.
Forum: Aviation Safety Discussion Forum 04-12-2010, 06:54 AM
Replies: 2,301
Views: 210,074
Posted By mfeldt
Small problem? What kind do you actually mean? ...

Small problem? What kind do you actually mean?


Actually it's you who appears to try gaining political grounds by already using the "don't trample on the heritage" argument to conceal the...
Forum: Aviation Safety Discussion Forum 03-15-2010, 10:43 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
That, in turn should depend on why you are...

That, in turn should depend on why you are arriving late... if it is due to going a longer way, or because of flying more slowly.

May I repeat my question on weather radars (even if weather...
Forum: Aviation Safety Discussion Forum 03-12-2010, 08:28 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
To get once more to the RIF issue and the fuel...

To get once more to the RIF issue and the fuel situation which might have been too tight to allow lengthy deviations without making certain a stop-over in Bordeaux....
Forum: Aviation Safety Discussion Forum 03-11-2010, 02:55 PM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Hmmm.... the flight plan reads: What...

Hmmm....

the flight plan reads:


What does that actually mean? is FL270 planned to be achieved by the time they reach SALPU? Or would they request permission to climb once they are at SALPU?...
Forum: Aviation Safety Discussion Forum 03-11-2010, 10:03 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
So the conclusion is they DID maintain FL350 -...

So the conclusion is they DID maintain FL350 - either because the understood what the controler said but for some reason did not acknowledge, or because they didn't hear him and thus had no...
Forum: Aviation Safety Discussion Forum 03-11-2010, 09:23 AM
Replies: 55
Views: 4,729
Posted By mfeldt
I can't see that. To me, the RIF issue is a...

I can't see that. To me, the RIF issue is a possible issue in the AF447 context, which cannot be resolved because too little is known about the factors causing the AF447 disaster.

My...
Forum: Aviation Safety Discussion Forum 03-10-2010, 07:55 AM
Replies: 55
Views: 4,729
Posted By mfeldt
Even though AF447 is only an example here, I...

Even though AF447 is only an example here, I remember to have read in the early days after the disaster sentences like these:



According to the fuel calculation that Huettig made in his mail...
Forum: Aviation Safety Discussion Forum 03-09-2010, 01:32 PM
Replies: 55
Views: 4,729
Posted By mfeldt
While Pilots here are saying that such concerns...

While Pilots here are saying that such concerns need not exist, I could easily imagine very subtle measures by companies to exert pressure onto crews. In fact they don't need to know about the...
Forum: Aviation Safety Discussion Forum 03-08-2010, 08:32 AM
Replies: 2,438
Views: 278,171
Posted By mfeldt
Urks, I'm guilty on this one. the 8 minutes...

Urks, I'm guilty on this one. the 8 minutes were calculated by me, not by Huettig.... In Hüttig's mail, he makes the remark that 2.4t is good for "over 20 minutes of flight at most", and I used...
Forum: Aviation Safety Discussion Forum 03-05-2010, 10:31 PM
Replies: 3,327
Views: 485,183
Posted By mfeldt
I have very little against the idea of...

I have very little against the idea of occasionally not making my destination if the "not making" means finding myself at an airport I didn't intend to go. If that's for a good reason, where good...
Forum: Aviation Safety Discussion Forum 03-05-2010, 09:29 PM
Replies: 3,327
Views: 485,183
Posted By mfeldt
Admittedly I'm not an expert at all in this, but...

Admittedly I'm not an expert at all in this, but can someone maybe explain to me what the RIF procedure is good for when it makes no difference at all here? What I understand is that, since there...
Forum: Aviation Safety Discussion Forum 03-05-2010, 01:13 PM
Replies: 3,327
Views: 485,183
Posted By mfeldt
Hey, I got a reply from Gerhard Huettig, ...

Hey,

I got a reply from Gerhard Huettig, the Berlin Professor and Airbus pilot quoted in the "SPIEGEL" article. As it is a private message, I'm not going to post it here, but the bottom line...
Forum: Aviation Safety Discussion Forum 03-05-2010, 11:45 AM
Replies: 3,327
Views: 485,183
Posted By mfeldt
If I remember correctly, ships are going to set...

If I remember correctly, ships are going to set sail from the port of Recife on the 12th of March.

m.
Forum: Aviation Safety Discussion Forum 03-04-2010, 10:19 AM
Replies: 3,327
Views: 485,183
Posted By mfeldt
Sorry when some of you may think that time here...

Sorry when some of you may think that time here was spent on a useless discussion - but I would regard being able to get background information to a sloppy-written newspaper article as a proof of...
Forum: Aviation Safety Discussion Forum 03-02-2010, 07:37 AM
Replies: 3,327
Views: 485,183
Posted By mfeldt
It's a matter of human risk perception. Of...

It's a matter of human risk perception. Of course the airline will not be so dumb to pressure their pilots into a crash - but managers will tend to think that they can save a little money here and...
Forum: Aviation Safety Discussion Forum 03-01-2010, 12:27 PM
Replies: 3,327
Views: 485,183
Posted By mfeldt
As written a few pages back, I experienced one -...

As written a few pages back, I experienced one - and my flight career is probably shorter than that of most people here. At that time it was clearly weather related - the scheduled flight time was...
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