Search found 17510 matches

by zeke
Tue Feb 07, 2023 9:29 am
Forum: Technical/Operations
Topic: United Airlines and A320's RNP Question
Replies: 33
Views: 2576

Re: United Airlines and A320's RNP Question

Starlionblue wrote:
Top tip: On your next trip, Read the notes on the ILS 25R RNAV transition and approach plates with care before you arrive. :)


Reading them seems optional, seen an A380 and 787 perform immaculate EGPWS escape manoeuvres.

Next approach ATC issue the LOC.

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by zeke
Mon Feb 06, 2023 4:40 pm
Forum: Technical/Operations
Topic: Southwest to Halve Flying Time Needed for Prospective Pilots
Replies: 29
Views: 2039

Re: Southwest to Halve Flying Time Needed for Prospective Pilots

GalaxyFlyer wrote:
An extra $10,000 could easily be the difference b
Knowing human nature, they’d, like most, would have pocketed to money and still slept in the crew room. I’ve seen well paid legacy captains do it.


Why not just book them a room under their name, no financial incentive.

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by zeke
Mon Feb 06, 2023 4:01 pm
Forum: Military Aviation & Space Flight
Topic: Chinese Spy Balloon
Replies: 151
Views: 9038

Re: Chinese Spy Balloon

bikerthai wrote:
Huh? Do we have any operational ground base laser system that can hit a target at that altitude?


Yes, and even much higher. The amount of energy required is not intuitive.

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by zeke
Mon Feb 06, 2023 2:57 pm
Forum: Military Aviation & Space Flight
Topic: Chinese Spy Balloon
Replies: 151
Views: 9038

Re: Chinese Spy Balloon

Why take it down with the latest Sidewinder carried on board the 2nd most technologically advanced fighter in the USAF's inventory (sans whatever Skunkworks has in hiding}? It could have been taken down by a ground based laser. The shoot down was simply communication by YouTube. And communicating, ...

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by zeke
Mon Feb 06, 2023 2:36 pm
Forum: Technical/Operations
Topic: Southwest to Halve Flying Time Needed for Prospective Pilots
Replies: 29
Views: 2039

Re: Southwest to Halve Flying Time Needed for Prospective Pilots

Please explain how just adding money makes a safer pilot? My point resonated from regional pilots having to live away from rostered base (often due to the cost of living) and having to resort to jumpseats and sleeping in crew rooms to fly their rosters. It iwas an industry wide issue at the regiona...

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by zeke
Mon Feb 06, 2023 2:29 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

A very good point. I made the exact same point 4 days ago, “The 77F/77L can have either a General Electric GE90-110B1 or GE90-115B.” If I had a penny every time I see a poorly written textbook... If the design regulations had a definition of flutter I would have quoted that, it doesn’t . A textbook...

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by zeke
Mon Feb 06, 2023 12:20 pm
Forum: Technical/Operations
Topic: Southwest to Halve Flying Time Needed for Prospective Pilots
Replies: 29
Views: 2039

Re: Southwest to Halve Flying Time Needed for Prospective Pilots

Ryanair have FOs with 185h total time and have a perfect safety record. A friend of mine who’s a senior training captain there says the low time pilots are great — their knowledge is recent, they’re young so their energy levels and reflexes are super sharp, and they’re brimming with enthusiasm. The...

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by zeke
Mon Feb 06, 2023 5:52 am
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

This is a copy-paste of a textbook, showing no understanding of underlying physics. Correct, it is a textbook definition of flutter. I don’t understand how you can claim it is incorrect. There are certainly propulsion-induced flutter effects as airflow interaction doesn't care about the source of a...

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by zeke
Fri Feb 03, 2023 12:12 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

Well, your definition of flutter please. Other than that it is a problem affecting both civilian and military airplanes, of course. and without referencing "good working understanding of non-applicable equations". Some references may be helpful, though. You really don't care what is the r...

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by zeke
Thu Feb 02, 2023 3:56 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

This is drivel, the jet exhaust over the tailplane as cited above is not flutter. Lots of aircraft types experience similar. Your posts are just red herrings, and do not address the claim at all. I was very familiar with flutter, in air, in water, and in space. The engineering principles have not ch...

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by zeke
Thu Feb 02, 2023 3:42 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Updated: QR and Airbus reach settlement in legal dispute

Not to mention QR had to pay a high proportion of the Air us legal bill.

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by zeke
Thu Feb 02, 2023 2:34 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Updated: QR and Airbus reach settlement in legal dispute

While we don’t know the details of the deal apart from the official statements from either side. The fundamental claim that was made, I,e, the A350s were unsafe and grounded by the QCAA is being answered with them returning to service. That sends a very clear message to industry, and to the leasing ...

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by zeke
Thu Feb 02, 2023 12:25 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

The only time a standby generator does not count (normal ETOPS) as “independent power source” is when it is unable to meet the demands of the systems required to be available. Many standby generators can meet that requirement, eg the A330. The 767 example you keep bringing up by your own admission h...

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by zeke
Thu Feb 02, 2023 12:08 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

Excessively immature. I am very familiar with the difference between vibration and flutter, I have provided the definition of flutter. Many many moons ago I used to do ground vibration testing using Brüel & Kjær shakers and accelerometers connected to a HP FFT system doing modal analysis on a HP...

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by zeke
Thu Feb 02, 2023 3:31 am
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

What is the difference between flutter and vibration in the wind from your perspective? Flutter is a specific engineering, it means an unstable, self-excited structural oscillation at a definite frequency where energy is extracted from the airstream by the motion of the structure. It can occur in b...

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by zeke
Wed Feb 01, 2023 5:30 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

It’s false. Flutter is the interaction between the airflow over an aero structure and how it excites the inherent structural modes are excited. The aero structure does not know the difference between air coming from an engine or from free stream flow. The 77F/77L can have either a General Electric G...

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by zeke
Wed Feb 01, 2023 5:18 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Airbus axes remaining A350 jet deal with Qatar -sources

If you don't believe it, rewind a decade and review the Airbus vs. AA "beef" over AA587 that A.net was convinced would last for all time..... AA ended up coming back to Airbus for (what was then) the biggest order of all time. That was just fanboy hogwash, still see it today with all the ...

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by zeke
Wed Feb 01, 2023 1:48 am
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

Fun fact: The 777-200 LR GE90-115 was down rated to 110,000 lbs of thrust and designated the GE90-110. Exact same engine, just an artificially imposed limitation This limitation was imposed because testing revealed that 115,000 lbs of thrust moved so much air that flutter was induced on the elevato...

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by zeke
Wed Feb 01, 2023 1:26 am
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Airbus axes remaining A350 jet deal with Qatar -sources

This argument is over the semantics of the language. It's clear that QCAA made a Level 1 finding and that EASA is aware of this, and has had discussions with QCAA regarding it. They have not been transmitted to EASA or provided to the court, everyone has been asking for the documents that have grou...

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by zeke
Tue Jan 31, 2023 7:50 pm
Forum: Civil Aviation
Topic: Sloths die on parked aircraft
Replies: 35
Views: 6567

Re: Sloths die on parked aircraft

Well, the cockpit crew signs of the NOTOC, so for sure they are aware of AVI being loaded on the flight(s). And, yes the captain also has the final decision and accepts the aircraft. So for sure the captain has a responsibility here too. Once the flight lands that NOTOC is invalid, cargo is no long...

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by zeke
Tue Jan 31, 2023 1:55 pm
Forum: Civil Aviation
Topic: Sloths die on parked aircraft
Replies: 35
Views: 6567

Re: Sloths die on parked aircraft

davies2911 wrote:
The pilots should be dismissed for this. They are responsible for live cargo. Shocking but not surprised from a company operating from Qatar. They don’t value human rights so why would they that of animals.


Nothing the pilots could do about this. Pilots don’t get any say on how cargo is treated.

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by zeke
Tue Jan 31, 2023 12:10 pm
Forum: Civil Aviation
Topic: Boeing: B787F most likely candidate to succeed B767F
Replies: 124
Views: 20659

Re: 787F As Successor to 767F?

slick1017 wrote:
Is there any reason we haven't seen Boeing offer the 787 as a freighter?


Boeing has said they will not be offering it.

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by zeke
Mon Jan 30, 2023 5:14 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Where does this "PRIMARY" wording come from ? FAR 25 Appendix K just says "(b) Electrical power supply. The airplane must be equipped with at least three independent sources of electrical power." The standby generator on Airbus aircraft meet the ETOPS requirements, an APU is not ...

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by zeke
Mon Jan 30, 2023 4:15 pm
Forum: Technical/Operations
Topic: Small antenna radome on some DAL 737-900s
Replies: 7
Views: 1105

Re: Small antenna radome on some DAL 737-900s

GHz or MHz? The glossy brochure on the Gogo website indicated 850 Ghz "Gogo is the only connectivity provider with the ability to leverage both licensed and unlicensed frequencies – our proprietary 850 GHz plus 2.4 GHz. It’s an exclusive benefit to our networks and gives our customers a consta...

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by zeke
Mon Jan 30, 2023 11:56 am
Forum: Civil Aviation
Topic: Airbus A350XWB ongoing evolutionary enhancements, EIS 2025-2030.
Replies: 258
Views: 62424

Re: Airbus A350XWB ongoing evolutionary enhancements, EIS 2025-2030.

Because the additional fuel is added to the extant center fuel tank, which significantly shifts the aircraft's center of gravity forward. Requiring the forward cargo bay to be empty, helps balance this out. Absolute hogwash, the index for 115 of fuel tonnes is only -454, the index maximum load in t...

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by zeke
Mon Jan 30, 2023 8:47 am
Forum: Technical/Operations
Topic: United Airlines and A320's RNP Question
Replies: 33
Views: 2576

Re: United Airlines and A320's RNP Question

If it is helping controllers workload as much as you claim, the FAA should be funding it to be a mandate.


Decreasing controller workload or increasing airport capacity would not be a KPI for any airline manager.

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by zeke
Mon Jan 30, 2023 5:27 am
Forum: Technical/Operations
Topic: Small antenna radome on some DAL 737-900s
Replies: 7
Views: 1105

Re: Small antenna radome on some DAL 737-900s

N47 wrote:
Does anyone know what frquency band these ground based wifi systems used? Im curious as the rf spectrum is pretty tight.


I think it’s the Aircell 850 GHz

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by zeke
Mon Jan 30, 2023 4:39 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Some airplanes have certain ETOPS restrictions/downgrades based upon operation with a generator inop. The MEL has to be followed. Sure, however they can still be dispatched ETOPS. For the 767 example you keep bringing up, 120 minutes is still enough to fly TATL, Europe to South America, Australia/N...

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by zeke
Mon Jan 30, 2023 3:01 am
Forum: Technical/Operations
Topic: Question re ILS + STAR approaches
Replies: 14
Views: 1021

Re: Question re ILS + STAR approaches

That was my initial thought upon checking into this thread having had some experience with FMC issues in Flight Sim in the past, but nonetheless, it sparked my curiosity about real-world FMC use. I'd be interested to hear what any real-world pilots have to say about the training that goes into usin...

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by zeke
Sun Jan 29, 2023 3:33 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

No word games at all. I do this for a living. 120 minutes is still ETOPS, for some airlines that’s all they need and approved for, it might have no operational impact. On the A330, only one generator is required to power the whole aircraft. In the event of all 3 (2xeng and APU) of them failing the e...

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by zeke
Sun Jan 29, 2023 6:05 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

I think blanket statements like "there are no ETOPS limits for APU inop, Which is correct, there is nothing in the ETOPS regulations that says that an aircraft must have an APU. It is about system redundancy, how that is achieved varies. "ATA 24 ELECTRICAL A minimum of three independent s...

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by zeke
Sun Jan 29, 2023 3:31 am
Forum: Technical/Operations
Topic: United Airlines and A320's RNP Question
Replies: 33
Views: 2576

Re: United Airlines and A320's RNP Question

Why did it take so long for UA's Airbus fleet to get this capability? UA 'Bus crews are fond of calling the 737s Jurassic or antiques, but the 737 fleet has had this capability (RNAV RNP) for years. When looking at things like it is a commercial decision, what is the cost benefit of obtaining and r...

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by zeke
Sun Jan 29, 2023 3:14 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

And just to be sure, are you saying that the 330 can fly unrestricted out to the maximum limit with the APU on MEL? If memory serves, the is a time reduction reduction for the 330 but I confess I may be wrong. We have no limit in our A330 MEL for an inop APU, however we only have ETOPS 180 on the A...

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by zeke
Sun Jan 29, 2023 3:03 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Aircraft can become ETOPS restricted with inoperative equipment. An inoperative APU limits ETOPS capability. The same applies for engine fan case overheat detection systems, main tank fuel pumps, engine anti-ice systems, fuel flow indicators, autothrottle arm switches, IDG, etc. Just a few examples...

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by zeke
Sun Jan 29, 2023 2:30 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Regarding the APU specifically, yes, in some cases and dependent upon the airplane ETOPS can be flown with an APU inoperative. Levels may be degraded: 120 mins and APU continuously operated for example, might be a requirement for certain airplane types. It all depends upon the system design/MMEL. A...

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by zeke
Sun Jan 29, 2023 2:26 am
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Whether or not they were grandfathered doesn't answer any of the questions I posed. They are not really questions, they are ramblings in disbelief that Airbus did something before Boeing. fact is A300/A310s were flying commercially beyond 60 minutes from the mid 1970s. It was not just like a light ...

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by zeke
Sat Jan 28, 2023 5:44 pm
Forum: Technical/Operations
Topic: Question re ILS + STAR approaches
Replies: 14
Views: 1021

Re: Question re ILS + STAR approaches

It often seems to happen that if you set an ILS approach for a particular runway and then want to add a STAR, the latter will duplicate one or more of the ILS waypoints. An example: fly into Lisbon LPPT, runway 02. Select the ILS for that runway (no transition) and then STAR TROI9A. You then have a...

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by zeke
Sat Jan 28, 2023 3:20 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

No offense, but is there anything in print or online about those operations? Its not that I don't believe you but it might be nice to see "officially." One sees over and over that the A300 was the first "ETOPS compliant" aircraft, which appears to be a direct requote from Airbus...

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by zeke
Sat Jan 28, 2023 3:01 pm
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

Starlionblue wrote:
From what I have heard, the A340 engines would regularly overtemp EGT if it was hot and/or high, and require thrust reduction. :)


Nope, not regular at all. We would have had a NTC in the front of the tech log if the engine was having high egts. Compressor washers helped a lot.

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by zeke
Sat Jan 28, 2023 8:03 am
Forum: Civil Aviation
Topic: Auckland flooded/closed
Replies: 42
Views: 9850

Re: Auckland flooded/closed

EK returned to DXB. Would be pretty peeved to be a pax on that flight and fly 14 hours to nowhere. Guess all the other options had too many complications. You would be surprised just how long you need to stay in the air to get below maximum landing weight when flying ultra long haul. Hope the fuel ...

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by zeke
Thu Jan 26, 2023 7:17 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

Thank you, other people aware of the real facts will not go down well.

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by zeke
Thu Jan 26, 2023 7:14 pm
Forum: Civil Aviation
Topic: Yeti Airlines AT75 crash in Nepal
Replies: 332
Views: 84857

Re: Yeti Airlines AT75 crash in Nepal

This article states both the FDR and CVR will be sent to Singapore this Friday. There was an MOU signed in 2020 relating to support for aircraft incident and accident investigations. https://www.channelnewsasia.com/singapore/nepal-yeti-airlines-691-mot-black-box-flight-recorder-retrieval-3233576 Si...

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by zeke
Thu Jan 26, 2023 12:53 am
Forum: Technical/Operations
Topic: Engine Derates and top-of-climb power
Replies: 80
Views: 4197

Re: Engine Derates and top-of-climb power

They can select lower but not higher. But I believe it’s an option so some airlines may only have assumed temp derates and no "fixed" derates. The terminology you are using is unhelpful. With assumed temperature the maximum thrust is available, you can do your numbers and insert the speed...

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by zeke
Wed Jan 25, 2023 9:28 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

What you say is second approach becomes dominant. As a passenger who prefers getting to the destination in one piece (and hence from the regulator standpoint) that's fine as long as it works. So shutdown statistics in that monitoring scenario may not tell airline cost story, but it definitely tells...

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by zeke
Wed Jan 25, 2023 1:20 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

USAirKid wrote:
It got me to thinking, what are the real world statistics of in flight engine shutdowns (IFSD) on ETOPS maintained airplanes? It looks like SYD-AKL requires 90 minute ETOPS.


The stats these days are rather meaningless, with all the engine monitoring that is done engines are pulled before they fail.

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by zeke
Wed Jan 25, 2023 1:15 pm
Forum: Technical/Operations
Topic: ETOPS In Flight Shutdown Statistics
Replies: 48
Views: 3939

Re: ETOPS In Flight Shutdown Statistics

ETOPS was a success due to demands of Airbus and the pilot unions? That is some real revisionist history there, it takes quite a lens to see the situation that way. Sadly, Tony Broderick has passed so we can't interview him. Airbus had the A300 flying trans Atlantic beyond 60 minutes before ETOPS r...

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by zeke
Tue Jan 24, 2023 8:29 pm
Forum: Technical/Operations
Topic: How are MELs practically handled at airlines?
Replies: 15
Views: 1959

Re: How are MELs practically handled at airlines?

At my last airline and my current one no two entries needed. All log pages have a section at the bottom of the page for parts info you can close the original write up close the MEL with the parts change and put the parts info on the original page. Ours is all electronic done on iPads. The iPads hav...

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by zeke
Sun Jan 22, 2023 2:25 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Airbus axes remaining A350 jet deal with Qatar -sources

QCAR 1003 says: "Damage shall be assessed and modifications and repairs carried out using approved data " and the QCAA letter claims there is 'non-availability of approved data' It does not say this: That level 1 finding is saying the airline has failed in its maintenance oversight/proced...

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by zeke
Sun Jan 22, 2023 2:12 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Airbus axes remaining A350 jet deal with Qatar -sources

[You are saying that the QCAA has not communicated a Level 1 finding to the EASA, I am asking for your source of that information. A lot of people here on A.net say there has been no communication between EASA and QCAA on the matter, and that is not correct. The QCAA level 1 finding related to the ...

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by zeke
Sun Jan 22, 2023 1:55 pm
Forum: Civil Aviation
Topic: Updated: QR and Airbus reach settlement in legal dispute
Replies: 408
Views: 108135

Re: Airbus axes remaining A350 jet deal with Qatar -sources

Source: QCAR 1003 Which is maintenance oversight, not related to a type design. Qatar Civil Aviation Regulation No. 1003 of 2006 governing the continuing airworthiness of aircraft and aeronautical products, parts and appliances, and on the approval of organisations and personnel involved in these t...

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