Search found 266 matches

by michi
Thu Jul 23, 2020 7:55 am
Forum: Technical/Operations
Topic: Parallel Runway Assignment
Replies: 15
Views: 1560

Re: Parallel Runway Assignment

In Munich, the runways are specifically assigned for landings (08R and 26R) and departures (08L and 26L). The reason is that the runways are longitudinally displaced in such a way that taxi times for both incoming and departing traffic are minimized. This is not correct. This concept might have bee...

Jump to post
by michi
Thu Jan 09, 2020 4:59 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

I guess it depends on the distance the fin was from the crash site and how shallow the descent was. I would think that the fin would stay close to the site, or the entire back of the plane would break off. If the fin is simply at the end of the debris field then I agree with you. The fin is at the ...

Jump to post
by michi
Thu Jan 09, 2020 4:40 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

The vertical fin being quite far back from the crash site suggests either that the missile hit it, or that the pilots were too aggressive (or there was some mechanical issue) trying to bring stability to the plane, or a bit of both. The vertical fin is at the end of the debris field of the crash si...

Jump to post
by michi
Thu Jan 09, 2020 4:24 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

Has anyone posted a theory on the loss of the vertical fin far before the crash site? It might be a sign that the pilots were to aggressive in trying to control the plane. The vertical fin was found at the crash site. Numerous pictures available online show the vertical fin at the end of the debris...

Jump to post
by michi
Thu Jan 09, 2020 4:11 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

morrisond wrote:
How long had they veered off the straight ahead track before loss of signal?


It looks like around 43sec, depending which data point is the first one off the SID track.

Jump to post
by michi
Thu Jan 09, 2020 4:01 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

The standard departure out of IKA when flying towards UKBB would be straight out. Using the FR24 Data it looks like the aircraft did an early turn. As it is not known so far that there has been communication between the aircraft and the controllers, one might think that the crew did the turn for som...

Jump to post
by michi
Thu Jan 09, 2020 2:58 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

It's not surprising that the missile tip / proximity fuse would fall near the crash site. The hypothetical missile would have approached the airplane from the rear, following approximately the same flight path, then after exploding both its head and the (completely uncontrollable) airplane would ha...

Jump to post
by michi
Wed Jan 08, 2020 8:43 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

However a close pattern of multiple holes all with similar directions of travel would indicate a blast. I have seen my fair share of vehicles that have been hit by IED’s. Very similar pattern as what an air burst (proximity detonation) would do. After a quick search it looks like that a SA-15 uses ...

Jump to post
by michi
Wed Jan 08, 2020 8:36 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

But we don't have any track data suggesting it was a turn back to the airport. Could you create a map showing the plot line from ADS-B relative to the crash site? I know it is 14km from the last spot, but I don't know if it is 14km backward or straight ahead. My guess is there is an arc involved, b...

Jump to post
by michi
Wed Jan 08, 2020 8:18 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

Please delete... Fingertrouble..

Jump to post
by michi
Wed Jan 08, 2020 8:17 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

Would they have gotten a TCAS or other type of alert about a missile? Or would they have known their transponder was being messed with? Either would have led to emergency procedures. No missile warning in civil aircraft. Transponder failure would not have led to emergency procedures. Transponder fa...

Jump to post
by michi
Wed Jan 08, 2020 8:12 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

If this ends up just being an accident, it has to go down as one of the most zany coincidences in aviation history. An airliner bursts into flames over a missile launch site mere hours after missiles were launched. Do you know what kind of missile launch site (e.g. ICBM, SAM) the aircraft flew over...

Jump to post
by michi
Wed Jan 08, 2020 8:08 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

In the times that we live you have to triple check everything. Yup.. But this basic knowledge isn't around everywhere :banghead: A picture posted on the net has to be the truth! I would take it with a pinch of salt due to all the above. Someone more of an expert than me could do some further diggin...

Jump to post
by michi
Wed Jan 08, 2020 8:03 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

I posted this upthread, but I propose that the ADS-B was scrambled/spoofed/hacked purposefully causing the Iranian missile defense to recognize it as a hostile. The reason the crash site is 14km (I measured the GPS coordinates from the last ADS-B to the crash site) is that was the period potentiall...

Jump to post
by michi
Wed Jan 08, 2020 7:49 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

Someone on Twiiter posted a picture of a Surface-to-air missile wreck, claiming it was taken from the crash site. Reverse search did not find any other similar images that were previously posted, so the image may be recent, but it has not yet been confirmed that it was taken near the crash site. ht...

Jump to post
by michi
Wed Jan 08, 2020 3:09 pm
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

https://i.dailymail.co.uk/1s/2020/01/08/10/23142804-7863359-image-a-57_1578478775834.jpg Did they really turn around the tail fin? This yellow cup-Thing (oxygen mask?) still seems to be on the same place. And why and how would turn the tail fin? It looks like it was turned around. The yellow cup lo...

Jump to post
by michi
Wed Jan 08, 2020 11:14 am
Forum: Civil Aviation
Topic: Iran admits to accidentally shooting down Ukraine Flight 752
Replies: 2728
Views: 300787

Re: Reports of Ukrainian 737 Crash in Tehran,Iran

Some observations: The initial track shown on FR24 looks like a NABAX SID (R285 IKA VOR until D33 IKA). However the aircraft did a right turn around D10 IKA. This turn might have been a direct clearance by ATC. This clearance needs communication. It is not known wether this happened or not. Shortly ...

Jump to post
by michi
Tue Jun 25, 2019 6:12 am
Forum: Civil Aviation
Topic: LH will look at A321XLR, but it's no game-changer: CEO
Replies: 183
Views: 27534

Re: LH will look at A321XLR, but it's no game-changer: CEO

LH needs cargo capacity as well. This might be a problem with the XLR. LH is a full service carrier, not only for the passengers but also for cargo. Lots of those destinations in Africa and the ME would be in XLR range. But those destinations are cargo heavy flights als well. Therefore cargo might b...

Jump to post
by michi
Fri Jun 07, 2019 6:16 pm
Forum: Travel, Polls & Preferences
Topic: Should Airports Stop Building for 380 sized Aircraft?
Replies: 56
Views: 8171

Re: Should Airports Stop Building for 380 sized Aircraft?

Airports are constantly modified. New regulations, new aircraft and whatsoever requires a modernization of airport infrastructure all the time. The demise of category D (ICAO Aerodrome Reference Code) / ADG IV (FAA Aircraft Design Group) aircraft (B757, B767 mostly) might trigger another redesign ph...

Jump to post
by michi
Tue Jun 04, 2019 6:01 pm
Forum: Travel, Polls & Preferences
Topic: Should Airports Stop Building for 380 sized Aircraft?
Replies: 56
Views: 8171

Re: Should Airports Stop Building for 380 sized Aircraft?

Again, lots of inaccuracies regarding the A380 in this thread :banghead: Airports did not start widening stuff for the A380. The 773 or the A346 also needed taxiway adjustments. The inner side of taxiway curves needed fillets in order to enable use of sharp turns. The distance between the NLG (Nose ...

Jump to post
by michi
Fri May 17, 2019 5:51 pm
Forum: Technical/Operations
Topic: 787 vs A350 range
Replies: 483
Views: 118657

Re: 787 vs A350 range

zeke wrote:
Captain does not have his hand on the side stick during the final approach :roll:


I noticed that too. And the first officer is grabbing the reverse before touchdown. :boggled:

Jump to post
by michi
Thu May 16, 2019 6:56 am
Forum: Aviation Hobby
Topic: Airbus A/C DWG files converted into KML
Replies: 2
Views: 2506

Re: Airbus A/C DWG files converted into KML

Thank you atomicstar.

I have tried that site. It did not work. But maybe it was me who failed to use it correctly. Unfortunatly I have used all my free conversions yesterday.

Jump to post
by michi
Wed May 15, 2019 3:43 pm
Forum: Aviation Hobby
Topic: Airbus A/C DWG files converted into KML
Replies: 2
Views: 2506

Airbus A/C DWG files converted into KML

Hi all, I would like to use KML files of airbus aircraft in google earth. Airbus offers download of their A/C drawings in a .dwg file: https://www.airbus.com/aircraft/support-services/airport-operations-and-technical-data/autocad-3-view-aircraft-drawings.html As I do not have AutoCAD I cannot conver...

Jump to post
by michi
Fri Apr 19, 2019 12:38 pm
Forum: Civil Aviation
Topic: Istanbul new airport - latest pictures and discussion thread
Replies: 686
Views: 184295

Re: Istanbul new airport - latest pictures and discussion thread

Here is my trip report flying to and from the new IST airport: The arrival was fast. We where cleared for a STAR first, but shortly after beginning our descent we received a direct towards a base waypoint. So no weird turns. Also no delay or long final. We did an ILS 34L (34R was not used at all thi...

Jump to post
by michi
Tue Apr 16, 2019 5:41 pm
Forum: Civil Aviation
Topic: Istanbul new airport - latest pictures and discussion thread
Replies: 686
Views: 184295

Re: Istanbul new airport - latest pictures and discussion thread

Good comparison. I suppose they will change operations similar to Gatwick once more runways have been constructed. After preparing my flight towards IST tomorrow, I have discovered some interesting procedures about the runway usage. First, there are two pairs of parallel runways west of the termina...

Jump to post
by michi
Thu Apr 11, 2019 10:59 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

One would hope that the fact that the captain's AoA display had gone all blue while the FO's was still ~40% brown would also be a clue. The display with the blue and brown is called attitude indicator (aka artificial horizon). It displays pitch and bank. However, this is not an AoA indicator! https...

Jump to post
by michi
Tue Apr 09, 2019 6:00 pm
Forum: Civil Aviation
Topic: Istanbul new airport - latest pictures and discussion thread
Replies: 686
Views: 184295

Re: Istanbul new airport - latest pictures and discussion thread

I suppose there was an intensive simulator training of ATC of all possible setups for arrivals and departures incl change of RWY's in use as well as emergency situations /closure of RWY due to the accident, holding procedures due to weather etc./. This in conjunction with traffic patterns to SAW, a...

Jump to post
by michi
Mon Apr 08, 2019 8:51 am
Forum: Civil Aviation
Topic: Istanbul new airport - latest pictures and discussion thread
Replies: 686
Views: 184295

Re: Istanbul new airport - latest pictures and discussion thread

Looking at the IGA departures only 6 TK flights between 9-11am this morning. Flightradar24 suggest TK is operating at 60-70% capacity. Flights departing, landing taking the long way around, making strange turns even though there is no apparent heavy traffic in the air. Do not forget that the new ai...

Jump to post
by michi
Fri Mar 15, 2019 11:15 am
Forum: Civil Aviation
Topic: LH orders 20 B789 and 20 additional A350; Will sell 6 A380s back to Airbus
Replies: 355
Views: 57310

Re: LH orders 20 B789 and 20 additional A350; Will sell 6 A380s back to Airbus

From LH's comments it looks like all their A346 will be replaced by A359. So I don't think they feel first class is required on those routes anymore. Replacing A346 with A359 does not mean they will be used on the same routes. They might rotate aircraft as well. It is way to simple to say that A359...

Jump to post
by michi
Fri Mar 15, 2019 8:24 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

What I fear is that there is unreliable airspeed from the take off roll, and they were shocked to see stick shaker on from the take off roll, and decided to shallow out the climb to "get out of it"... only to not see it not disappear.... with the increasing speed and confusion with the st...

Jump to post
by michi
Thu Mar 14, 2019 2:38 pm
Forum: Civil Aviation
Topic: LH orders 20 B789 and 20 additional A350; Will sell 6 A380s back to Airbus
Replies: 355
Views: 57310

Re: LH orders 20 B789 and 20 additional A350; Will sell 6 A380s back to Airbus

I guess that all the 4 engined aircraft will leave LH before the first D-Check.

2022 fits for the A380.

Jump to post
by michi
Wed Mar 13, 2019 12:15 pm
Forum: Civil Aviation
Topic: Atlas Air 3591 Down in Trinity Bay, Texas
Replies: 1923
Views: 455987

Re: Atlas Air 3591 Down in Trinity Bay, Texas

... Previous generation large jets (not fly-by-wire) have cables from the control columns to a bellcrank that directs a PCU to deflect the control surface as required through the control column movement. If the control column is moved but the associated PCU does NOT move (or vice versa), it may cau...

Jump to post
by michi
Wed Mar 13, 2019 7:02 am
Forum: Civil Aviation
Topic: Atlas Air 3591 Down in Trinity Bay, Texas
Replies: 1923
Views: 455987

Re: Atlas Air 3591 Down in Trinity Bay, Texas

AirlineCritic wrote:
...

So, does this leave only spatial disorientation and confusion then as the initiating action? Can others see any other issue that would fit what we've been told?


Mechanical failure of some sort? Hardware failure within the elevator control chain?

Jump to post
by michi
Tue Mar 12, 2019 8:19 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Stall is AOA dependend. Not speed!

You can stall an aircraft at any speed.

Jump to post
by michi
Tue Mar 12, 2019 7:37 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

casinterest wrote:
Do you have an updated one ?


I suggest to use the map on avherald.

http://avherald.com/h?article=4c534c4a&opt=0

Jump to post
by michi
Tue Mar 12, 2019 7:34 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

As nobody answered before, I would like to repost some observations and questions. There is a lot of focus on the MCAS. Still, there are other questions not answered yet. Those questions came up after reading all the information in the news (and this thread). This information might not be reliable, ...

Jump to post
by michi
Tue Mar 12, 2019 7:14 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

... We do not have the data from after this point to understand what happened till the crash minutes later and miles away. We need the FDR for that. https://si.wsj.net/public/resources/images/B3-DJ688_backgr_16U_20190310130545.jpg The crash location on this map is not correct.

Jump to post
by michi
Tue Mar 12, 2019 7:10 pm
Forum: Civil Aviation
Topic: Atlas Air 3591 Down in Trinity Bay, Texas
Replies: 1923
Views: 455987

Re: Atlas Air 3591 Down in Trinity Bay, Texas

I am not familiar with design of the flight controls of the B767. Therefore I have some questions regarding the phrase "in response to column input". Does the B767 still have cables/wires between the control column and the hydraulic actuators? Would there be a possible column movement beca...

Jump to post
by michi
Mon Mar 11, 2019 7:57 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

the captain starts flying solo and becomes an instructor


Good CRM should prevent that from happening.

Jump to post
by michi
Mon Mar 11, 2019 3:26 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

There is still a lot of focus on the MCAS. Still, there are other questions not answered yet. These are my questions which I have after collection all the information in the news. Of course, the information might not be reliable, incomplete (as FR24 coverage is poor in that area) and even fake. But ...

Jump to post
by michi
Mon Mar 11, 2019 11:14 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Very well done sir, I agree Thanks for adding the pictures. The hill to the east is 8772ft MSL. Otherwise they have been in an area with relatively flat terrain (less than 8000ft MSL). Only a few mountains up to 8772ft MSL are in that area southeast of the AD, with the exception of one 100072ft mou...

Jump to post
by michi
Mon Mar 11, 2019 10:26 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 761287

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

To me it looks like the crash site is located here: 8°52'38.04"N 39°15'4.28"E This is approximatley 18NM to the southeast of the last FR24 data point. I have looked at different pictures and videos of the crash site. The Street pattern, the small canyon or ravine and the hill with trees in...

Jump to post
by michi
Wed Feb 20, 2019 9:15 am
Forum: Civil Aviation
Topic: First B777-9X of LH in PAE now
Replies: 95
Views: 23587

Re: First B777-9X of LH in PAE now

DeltaB717 wrote:
When LH received their first A380, they flew them on existing services to both LHR and CDG in place of the usual A320 Family. I don't see why that wouldn't be the case for the B779...


AF did this, but not LH. LH did training flights within Germany.

Jump to post
by michi
Sun Nov 11, 2018 1:33 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

... Ironically the Kalman filter was designed a half century ago to flight in space but is still not used to flight aircraft... The Kalman filter is used for position computation. It is used to combine the IRS with the GPS position. IRS position gives you a very accurate short term position. It als...

Jump to post
by michi
Fri Nov 09, 2018 5:39 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

One of them is to compute the domain of possible next inputs values given the actual values and state of the system (this is how stateful inspection firewall work for example). In a measuring system, input with impossible values can be filtered out of the redundancy set. In case of an aircraft, it'...

Jump to post
by michi
Thu Nov 08, 2018 6:11 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

BUSS is quite simple actually. It uses raw AoA from the vanes. There is no speed displayed, just an AoA range. Just keep it in the green. Combine with an appropriate thrust setting and you get expected performance. Excellent - my question is then - why do the pilots have to deactivate a load of pri...

Jump to post
by michi
Sun Nov 04, 2018 7:51 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

FDR has been read out. 1800 paramters from 19 flights.

Looks promising.

Jump to post
by michi
Sun Nov 04, 2018 7:39 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

It looks to me like you're throwing irrelevant / inaccurate information around in an attempt to confuse the reader. Was this aircraft equipped with the optional AOA sensor? I doubt it. All of the static and pitot probes are suspect from the last flight. All modern aircraft have AOA Sensors. The dis...

Jump to post
by michi
Sun Nov 04, 2018 7:03 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

Because it could only record data from the static port / pitot system which is suspected of being the failure point in the previous flight. The FDR will record much more than that. AOA angles for example, all of the static and pitot probes, IRS data, GPS data, AP status, Autothrottle status, thrott...

Jump to post
by michi
Sun Nov 04, 2018 6:51 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3187
Views: 620910

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

salttee wrote:
The ADS-B Data and the FDR data come from the same source and there is serious doubt about the validity of that source. The radar data is crucial.


Why is the validity of the FDR data in doubt?

Jump to post