Search found 303 matches

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by hitower3
Wed Aug 03, 2022 12:12 pm
Forum: Technical/Operations
Topic: Trent 1000 variants
Replies: 9
Views: 1009

Re: Trent 1000 variants

The WP page has a comprehensive list of all variants.
https://en.m.wikipedia.org/wiki/Rolls-Royce_Trent_1000

Hendric

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by hitower3
Tue Jul 19, 2022 1:30 pm
Forum: Civil Aviation
Topic: Boom Supersonic new configuration.
Replies: 102
Views: 18181

Re: Boom Supersonic new configuration.

They might consider a cooperation with Rekkof for their experience in the field of hypothetical aircraft.

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by hitower3
Tue Jul 19, 2022 12:30 pm
Forum: Technical/Operations
Topic: Lufthansa LH797 - winter 2022 schedule
Replies: 5
Views: 805

Re: Lufthansa LH797 - winter 2022 schedule

Dear Musa, Although there is a slight difference in normal cruise speed (M0,82 for the A340-300 vs. M0,85 for the A350), a major difference in flight time most likely comes from different routings. There is no significant restriction for the A340 to operate the ideal route from the Far East to Europ...

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by hitower3
Sun Jul 03, 2022 7:11 am
Forum: Civil Aviation
Topic: EK Incident at Brisbane: debris causes hole in wing join fairing
Replies: 42
Views: 10227

Re: EK Incident at Brisbane: debris causes hole in wing join fairing

Dear all, Here is my take on this occurrence, in the form of a hypothetical sequence of events: - A bolt detaches from the nose landing gear during take off roll. - The bolt rolls over the runway surface and hits the rearmost outer tire of the left body gear, wich receives damage in the process. - T...

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by hitower3
Fri Jun 17, 2022 7:17 am
Forum: Civil Aviation
Topic: AMS putting a limit on international passenger traffic through the airport
Replies: 71
Views: 12980

Re: AMS putting a limit on international passenger traffic through the airport

Dear all, I read several posts proposing to move some of the cancelled flights to regional airports like RTM. However, the Netherlands being a rather small country, would this shift solve the problem at all? If Schipol is short staffed, RTM will struggle to find additional staff as well - perhaps ev...

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by hitower3
Wed Jun 15, 2022 10:47 pm
Forum: Technical/Operations
Topic: Which is the most FUEL EFFICENT REGIONAL aircraft in the world ?
Replies: 16
Views: 2651

Re: Which is the most FUEL EFFICENT REGIONAL aircraft in the world ?

N1120A wrote:
What E195 is flying around with 146 passengers?


I took the maximum allowable seat capacity for both aircraft in order to get comparable results.

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by hitower3
Wed Jun 15, 2022 12:54 pm
Forum: Civil Aviation
Topic: What next for Airbus?
Replies: 100
Views: 18424

Re: What next for Airbus?

I’m sure they have a good idea what a new 36m wing would do for the A32x family. They might even have studies on 40m wings? Why box the A322/323 into 36m - everyone says it s a new category of plane. Would MoM have been in the 36m Box? Hello BD, The 36m wingspan limit comes from ICAO Annex 14 (Aero...

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by hitower3
Wed Jun 15, 2022 11:47 am
Forum: Technical/Operations
Topic: ERJ 145 Flying Manual
Replies: 1
Views: 1094

Re: ERJ 145 Flying Manual

I am pretty sure you can fly an ERJ-145 manually. :-)

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by hitower3
Wed Jun 15, 2022 11:45 am
Forum: Technical/Operations
Topic: Which is the most FUEL EFFICENT REGIONAL aircraft in the world ?
Replies: 16
Views: 2651

Re: Which is the most FUEL EFFICENT REGIONAL aircraft in the world ?

Dear FR, The ATR-72 had been advertized as "the most fuel efficient commercial aircraft" by the manufacturer literally decades ago, sporting an equivalent fuel consumption of "2,5 l/100km per passenger". This is still a good value by today's standards and it was achieved through ...

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by hitower3
Tue Jun 14, 2022 1:42 pm
Forum: Civil Aviation
Topic: What next for Airbus?
Replies: 100
Views: 18424

Re: What next for Airbus?

A modern 36m wing with a cleaned up design should give the A320 family a pretty good boost in efficiency. Dear FF, I agree with your statement. The A320 wing is the oldest wing in production at Airbus and only the 3rd wing design they ever made (after the A300 and the A310 which is different from t...

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by hitower3
Fri Jun 03, 2022 8:51 am
Forum: Civil Aviation
Topic: A321XLR vs first generation long haul jets
Replies: 34
Views: 12954

Re: A321XLR vs first generation long haul jets

Also, it'll be interesting to see just how many carriers take the optional forward fuel tank, and on what type of application. I suspect that, like with the 772LR, few carriers will ultimately select the optional tankage. Dear LAX772LR, I agree with your assumption. The 321XLR will have a sufficien...

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by hitower3
Fri Jun 03, 2022 6:57 am
Forum: Technical/Operations
Topic: Air France 447: 13 years on
Replies: 56
Views: 6192

Re: Air France 447: 13 years on

I'm by no means an expert but my understanding is that on AF447 the FBW system switched off due to a frozen Pitot tube and left two inexperienced pilots fly manually, without them realising what was actually happening. Had the FBW been functional, it would have prevented the stall and thus saved th...

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by hitower3
Thu Jun 02, 2022 2:15 pm
Forum: Civil Aviation
Topic: Condor News and Discussion Thread 2022
Replies: 165
Views: 31839

Re: Condor News and Discussion Thread 2022

("wood class" sounds fun - a Google mistranslation from the German). This is a fun translation error indeed. For the context, the German word "Holzklasse" - literal translation "wood class" refers to the third class in German railways, which was equipped with wooden be...

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by hitower3
Sun May 29, 2022 9:47 am
Forum: Civil Aviation
Topic: Bombardier launches the Global 8000
Replies: 25
Views: 6792

Re: Bombardier launches the Global 8000

Dear all,

Just to get an idea - what is the fuel burn penalty of cruising at M0,94 vs. M0,90? I could imagine that for some passengers of this aircraft, a few 1'000USD added cost is acceptable for arriving a bit earlier, still would be interested to know the numbers.

Kind regards,
Hendric

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by hitower3
Sun May 29, 2022 9:37 am
Forum: Civil Aviation
Topic: Boeing 777 Production/Delivery Thread - 2022
Replies: 122
Views: 44184

Re: Boeing 777 Production/Delivery Thread - 2022

I have the impression that at present, Boeing's civilian widebody programs are mainly supported by freighters. Fortunately, B is showing a strong portfolio in this expanding market.

Hendric

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by hitower3
Sun May 29, 2022 9:34 am
Forum: Civil Aviation
Topic: A321XLR vs first generation long haul jets
Replies: 34
Views: 12954

Re: A321XLR vs first generation long haul jets

Does the XLR feature anything different to improve fuel burn from the normal 32Q? So far it just looks like a boring upgrade with nothing too exciting. Dear Aseem, From a (potential) customer's perspective, the XLR is anything but boring, having secured hundreds of orders and many more to come. Tec...

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by hitower3
Sat May 28, 2022 5:38 pm
Forum: Civil Aviation
Topic: A321XLR vs first generation long haul jets
Replies: 34
Views: 12954

Re: A321XLR vs first generation long haul jets

viewtopic.php?t=1388811

Best regards!
Hendric
-->

Dear Mike,

I did a comparison between the LR and the 707 in this thread:
viewtopic.php?t=1388811

Best regards!
Hendric

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by hitower3
Sun May 08, 2022 6:36 pm
Forum: Technical/Operations
Topic: Double-hinged flap explained or shown??
Replies: 9
Views: 1386

Re: Double-hinged flap explained or shown??

Dear Convair, I am not entirely sure if the author may not have meant "double slotted flaps", as the DC10's flaps were single slotted. If it was indeed about double hinged flaps, the idea could have been an implementation of a NASA patent from 1967: https://ntrs.nasa.gov/citations/19700032...

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by hitower3
Sun May 08, 2022 12:37 pm
Forum: Technical/Operations
Topic: CFM Engine High Oil Consumption
Replies: 28
Views: 3760

Re: CFM Engine High Oil Consumption

Just a practical question: In the case of tri-jets, in particular the DC-10 and MD-11, the engine nr. 2 is mounted some 10m above ground. How is the oil level control and top-up performed? Logically, a cherry picker or similar device would be required to access the engine. Or is there a possibility ...

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by hitower3
Fri May 06, 2022 2:45 pm
Forum: Civil Aviation
Topic: Six arrests after brawl on board KLM flight
Replies: 56
Views: 13245

Re: Six arrests after brawl on board KLM flight

Aircraft was parked at the gate when this brawl broke out. So at not time was there any risk inflight. Call was made to the military police at Schiphol who arrived quickly and removed the party. This from a internal klm memo. Dear Flanker7, Thank you for this important clarification! In this case t...

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by hitower3
Fri May 06, 2022 8:08 am
Forum: Civil Aviation
Topic: Six arrests after brawl on board KLM flight
Replies: 56
Views: 13245

Re: Six arrests after brawl on board KLM flight

One thing that I find disturbing (apart from the recurrence of such events in general) is that in this case the captain entered the passenger cabin attempting to calm the fighters. In my view as someone not familiar with the relevant procedures in place, isn't this a significant risk for this situat...

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by hitower3
Fri Apr 29, 2022 7:50 am
Forum: Civil Aviation
Topic: BEA : EgyptAir MS804 crash caused by pilot smoking
Replies: 62
Views: 15656

Re: BEA : EgyptAir MS804 crash caused by pilot smoking

Dear all, Regarding flammability of materials, there is a significant property called the Limit Oxygen Index (LOI). This index, expressed in %, defines the concentration of oxygen required to allow the material in question to sustain combustion at room temperature. Typical insulation materials have ...

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by hitower3
Fri Apr 29, 2022 7:36 am
Forum: Technical/Operations
Topic: Augmented crew - logging flight hours
Replies: 28
Views: 3761

Re: Augmented crew - logging flight hours

Dear all, Thank you for the interesting insights so far! Let me formulate a bonus question: How are pilots logging flight hours in practice? Have you got a classic booklet where you had write your hours? Is it an online tool or a program on your PC? Would you take these records with you in case of c...

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by hitower3
Mon Apr 25, 2022 12:49 pm
Forum: Civil Aviation
Topic: Airbus A321XLR Development / Testing / Production Thread - 2022
Replies: 178
Views: 46313

Re: Airbus A321XLR Development / Testing / Production Thread - 2022

By the way, will the XLR get a separate ICAO designator?

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by hitower3
Mon Apr 18, 2022 6:51 am
Forum: Technical/Operations
Topic: Augmented crew - logging flight hours
Replies: 28
Views: 3761

Augmented crew - logging flight hours

Dear all, Just a short, stupid question: How are flight hours logged for pilots in an augmented crew setting? Let's assume a 12h flight with a crew of 3 (CA, FO, Cruise pilot). Would all 3 get the full 12h flight time credited to their logbook, or only these hours they are actually on duty? Thanks! ...

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by hitower3
Tue Apr 12, 2022 2:38 am
Forum: Technical/Operations
Topic: Can Singapore Airlines 253 seats A350 do SIN-NYC mission if they are 280T variant?
Replies: 17
Views: 3993

Re: Can Singapore Airlines 253 seats A350 do SIN-NYC mission if they are 280T variant?

5% contingency is normally not required for this type of flight. Some sort of variable contingency depending on route and conditions is carried. Often several tonnes less than 5%. 0.5 hours of reserve fuel is carried, and typically diversion fuel is also no less than 0.5 hours even if the nearest a...

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by hitower3
Mon Apr 11, 2022 2:33 pm
Forum: Technical/Operations
Topic: Can Singapore Airlines 253 seats A350 do SIN-NYC mission if they are 280T variant?
Replies: 17
Views: 3993

Re: Can Singapore Airlines 253 seats A350 do SIN-NYC mission if they are 280T variant?

Dear SQ32,

0,6 hours of reserve fuel is just a little on the low side. :D
A contingency of 5% (5,6t) must be accounted for, plus diversion (a few tons), plus final reserve (3t).

Maybe your assumptions for OEW and flight time are a little on the high side.

Best regards,
hendric

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by hitower3
Mon Apr 11, 2022 7:52 am
Forum: Civil Aviation
Topic: China Eastern 737-800 crashes in Guangxi, southern China
Replies: 1178
Views: 455942

Re: China Eastern 737-800 crashes in Guangxi, southern China

Malaysia Airlines' incident a few weeks ago, also a 738. Similarities? https://www.straitstimes.com/asia/se-asia/malfunction-of-pitot-static-system-affected-tawau-bound-malaysia-airlines-flight "Based on initial reports extracted from the flight data recorder (FDR), it was determined that a te...

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by hitower3
Sun Apr 10, 2022 4:13 am
Forum: Technical/Operations
Topic: Location of data plate on Airbus aircraft
Replies: 17
Views: 2668

Re: Location of data plate on Airbus aircraft

There are at least two of them: one in the door frame of L1, one in the rearmost door on the left side.

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by hitower3
Fri Apr 08, 2022 10:35 am
Forum: Civil Aviation
Topic: DHL 757 off runway at SJO
Replies: 131
Views: 26222

Re: DHL 757 off runway at SJO

Why do they refer to 'two souls on board' rather than two people?. This seemingly bizarre terminology is used to avoid any confusion. "Passengers" would not account for flight and cabin crew, "people" would not account for lap children, as they are treated differently on the pas...

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by hitower3
Wed Apr 06, 2022 8:50 am
Forum: Civil Aviation
Topic: AF 011 go around - Possible flight control issue
Replies: 106
Views: 32531

Re: AF 011 go around

Can someone with knowledge in the 777 systems please give us a hint what is the signification of the alarm sounds in the flight deck which can be heard in the video? Autopilot disconnect wailer. Dear allnippon767, The sound at 0:43 is similar to a configuration warning sound. Could you confirm this...

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by hitower3
Wed Apr 06, 2022 6:48 am
Forum: Civil Aviation
Topic: AF 011 go around - Possible flight control issue
Replies: 106
Views: 32531

Re: AF 011 go around

Can someone with knowledge in the 777 systems please give us a hint what is the signification of the alarm sounds in the flight deck which can be heard in the video?

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by hitower3
Mon Apr 04, 2022 12:58 pm
Forum: Civil Aviation
Topic: Condor launch new livery
Replies: 271
Views: 33996

Re: Condor launch new livery

Honestly, I am amused!
I would say that this livery does indeed fulfill the main purpose: make the airline recognisable while transporting the image of the carrier.

I'd say: "mission accomplished!"

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by hitower3
Mon Mar 21, 2022 9:02 am
Forum: Civil Aviation
Topic: China Eastern 737-800 crashes in Guangxi, southern China
Replies: 1178
Views: 455942

Re: China Eastern 737 "Missing Contact"

High altitude stall ? While it's too early to speculate about the cause(s) of this accident, a stall looks rather unlikely. Based on FR24 data, the speed remains very constant, as the rate of descent. A stall would require a drop in airspeed, followed by a rapid onset of a descent, followed by sign...

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by hitower3
Tue Mar 15, 2022 6:24 pm
Forum: Technical/Operations
Topic: Sahara dust over Europe
Replies: 6
Views: 2795

Re: Sahara dust over Europe

Quick answer: most likely not at all. This phenomenon happens every now and then, typically several times a year. While the chemical composition _might_ be somewhat similar to volcanic ash, the concentration is a lot lower. Also, Aircraft are regularly operating in desertic places, where flying sand...

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by hitower3
Fri Mar 11, 2022 9:06 am
Forum: Civil Aviation
Topic: Russian Invasion of Ukraine - Civil Aviation Related *Discussion* Thread
Replies: 954
Views: 327947

Re: Russian Invasion of Ukraine - Civil Aviation Related *Discussion* Thread

Dear all, Someone in the area of Kyev seems to have fun with an ADS-B transponder: https://www.flightradar24.com/FCKPUTIN/2b196bf0 We can observe the (in fact destroyed) An-225 flying circles around the capital and displaying an identification code in the form of an insult against the Russian leader...

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by hitower3
Thu Mar 03, 2022 8:55 am
Forum: Technical/Operations
Topic: Flying a G-II with full reverse thrust? (Shuttle Training Aircraft)
Replies: 3
Views: 1777

Re: Flying a G-II with full reverse thrust? (Shuttle Training Aircraft)

Dear ehbowen, Highly interesting, thank you. And this is how it actually looked like flying the brick simulator aircraft: https://www.youtube.com/watch?v=z44bEm9MO6w There was also an episode of "Flying heavy metal" documentary series about this aircraft, but I could not find it. Kind rega...

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by hitower3
Tue Feb 15, 2022 8:00 pm
Forum: Civil Aviation
Topic: Lufthansa Group News and Discussion Thread - 2022
Replies: 611
Views: 195846

Re: Lufthansa Group Fleet Thread - 2022

My guess is that OS will either get some older A330 from Swiss or LH or 787, depending on how good they perform. I don't know if it's "worth" it to invest expensive 787 in a low yield market like VIE. While the capacity and economics (capital and operating costs) of a used A330 from Swiss...

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by hitower3
Tue Feb 15, 2022 1:59 pm
Forum: Civil Aviation
Topic: Lufthansa Group News and Discussion Thread - 2022
Replies: 611
Views: 195846

Re: Lufthansa Group Fleet Thread - 2022

B77W might be too big for Austrian. I can't think of any OS long haul destination can absorb the B77W capacity. Hello, I really can't see where else these 777W could go inside the LH group. Perhaps as P2F conversion to LH Cargo in a few years? I am still puzzled why LX did not take over a dozen of ...

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by hitower3
Thu Feb 10, 2022 3:02 pm
Forum: Technical/Operations
Topic: What Is the Minimum Runway Width for Airline Service?
Replies: 16
Views: 3361

Re: What Is the Minimum Runway Width for Airline Service?

According to Airbus, the 320 series can operate from runways as narrow as 30m / 98,4ft.
So yes, 100ft is possible.

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by hitower3
Wed Feb 09, 2022 4:51 pm
Forum: Civil Aviation
Topic: Airbus cancels two A350-1000 for Qatar Airways
Replies: 76
Views: 17624

Re: Airbus cancels two A350-1000 for Qatar Airways

At least these two parked NTU QR 350-1000s will get a fresh coat of paint...

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by hitower3
Wed Feb 09, 2022 4:41 pm
Forum: Civil Aviation
Topic: Third and fourth freedoms of air
Replies: 8
Views: 1675

Re: Third and fourth freedoms of air

Ziyulu wrote:
I don't understand the difference between third and fourth.


It's almost the same, except that 3rd is the flight from home country to a remote country, whereas the return flight involves the 4th.
I agree that granting the 3rd makes little sense without the 4th.

Hendric

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by hitower3
Mon Feb 07, 2022 12:01 pm
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

Never knew the KC-46 has no reverse thrust, do you know why? My guess would be about mission profile: The KC-46 being a tanker aircraft, it will usually come back very light after the mission, since it did not only consume most of its trip fuel, but also its payload. Less landing weight means less ...

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by hitower3
Sat Feb 05, 2022 10:06 am
Forum: Technical/Operations
Topic: SAS flying an A321LR CPH-IAD
Replies: 25
Views: 3924

Re: SAS flying an A321LR CPH-IAD

From a regulatory standpoint, would they need an augmented crew for that flight?

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by hitower3
Wed Feb 02, 2022 3:51 pm
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

Interesting, the military connection. I was amazed seeing Canada's RCAF C-17's, up close and personal, to see not only the fan thrust was "reversed" but the core thrust was blocked during landing ops. Given the ratio of 75/25 for fan/core thrust production on landing, that extra 25% block...

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by hitower3
Mon Jan 31, 2022 7:33 am
Forum: Technical/Operations
Topic: Uncommanded thrust reversal deployment
Replies: 39
Views: 3529

Re: Uncommanded thrust reversal deployment

Hello, This is a rather challenging scenario that - at least as far as I recall - has never happened in reality. If an engine running at takeoff thrust suffers an uncommanded TR deployment (there are effective safeguards to prevent this, but let's assume this still happens), this will cause a very s...

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by hitower3
Wed Jan 26, 2022 1:36 pm
Forum: Technical/Operations
Topic: Night Curfew vs. Emergency Landing
Replies: 11
Views: 2584

Night Curfew vs. Emergency Landing

Dear a.netters, I am living not too far away from Vienna airport (VIE / LOWW) in Austria. This airport observes a night curfew between 23:00 and 6:00 local time every night. However to my knowledge, the curfew does not apply for emergency landings. I wonder what kind of preparations the airport (or ...

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by hitower3
Fri Jan 14, 2022 12:03 pm
Forum: Technical/Operations
Topic: Status of electric pushback tugs at MAD (Madrid)?
Replies: 12
Views: 4610

Re: Status of electric pushback tugs at MAD (Madrid)?

Dear all,

Electric drive would be great for tugs. Max. torque at 0rpm, heavy batteries provide grip, braking energy fed back into the batteries.
The environmental benefit comes on top.

Hendric

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by hitower3
Fri Jan 14, 2022 11:50 am
Forum: Technical/Operations
Topic: aerospatiale A200 from the 1980'?
Replies: 13
Views: 2079

Re: aerospatiale A200 from the 1980'?

Dear all, I once tried to find out if there was any "Dassault Mercure genes" to be found in the A320 genealogy. I researched the fuselage diameter and found different values for the A320 (3,95m / 13ft) and the Mercure (3,89m / 12ft10in), which is an indication of unrelated designs. With re...

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by hitower3
Thu Jan 13, 2022 11:25 am
Forum: Technical/Operations
Topic: A321LR flight level?
Replies: 9
Views: 2458

Re: A321LR flight level?

Obviously I am not a pilot. Nevertheless, I have analyzed some A321LR flights, specially the long range flights Air Portugal operates, and I have noticed that the flight level is usually below FL340. Is it possible to say that the A321 LR or the future XLR is not able to climb to a higher altitude ...

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