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...

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...

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...

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.

Re: 787F As Successor to 767F?

slick1017 wrote:

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

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 ...

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...

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...

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.

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.

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...

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...

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...

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...

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...

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...

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...

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...

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 ...

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...

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...

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.

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 ...

Re: ETOPS In Flight Shutdown Statistics

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

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...

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...

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...

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.

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...

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...

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...

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 ...

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...

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

Not all Level 1 findings require a MCAI (AD or SB). They would require an emergency AD if it’s a technical defect. You simply are unaware that a level 1 finding can be issued to a maintenance organisation or AOC holder for ineffective safety oversight. Do you have any information on the content of ...

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

I have always been under the impression that the QCAA grounded these specific airplanes because QR refused to perform the required maintenance. (?). As far as I am aware the QCAA has never made a class 1 finding for any A350 (grounding due to immediate safety risk, like MCAS), it has been for a pot...

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

I have always been under the impression that the QCAA grounded these specific airplanes because QR refused to perform the required maintenance. (?). As far as I am aware the QCAA has never made a class 1 finding for any A350 (grounding due to immediate safety risk, like MCAS), it has been for a pot...

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

Pelly wrote:

It is not unusual for specific aircraft to be grounded and not the whole fleet.

Re: Yeti Airlines AT75 crash in Nepal

I have done a live Facebook video in the air before, and it definitely got choppy and stopped for a few seconds here and there. I noticed I could go live in certain areas below 3,000 feet, and in more populated areas. I'm gonna stick with it being legit. Any updates on the CVR? I think it was being...

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

I guess the visual aspect is interesting, having aircraft look at its surroundings, processing the information and acting upon it. Next to the more regular available situational awareness (GPS, height, speed, ATC, weight, wind, tempearature, airport maps, etc.) . Automotive have been doing groundwo...

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

Nope, that assertion needs a bit more evidence me thinks. As you can see above, the analysis I provided shows that it is quite capable of flying 253 pax (8864nm is available at that pax load) You can choose to ignore if you like. With the Russian airspace avoidance, CX flew regular A350s from YYZ/J...

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

Yes Yes I know its simple flying but nonetheless,,, UK Court Demands Qatar Airways Produce Evidence Of QCAA Grounding Airbus A350s https://simpleflying.com/qatar-airways-evidence-qcaa-grounding-airbus-a350/ Now, it sounds like Waksman has had enough. He demanded that either the evidence be presente...

Re: 737-800 Single Engine landing

We can do (and I have done) the exact same thing on the 737. As long as the hydraulics are pressurized you can cycle the reverser all day long whether the engine is running or not. However, when an engine fails in flight part of the procedure is to pull the fire switch (whether or not there is a fi...

Re: Will the Mitsubishi SpaceJet be cancelled?

Air India to order 250 (any obscene number out of thin air)

Friends of mine working on it in the US flight testing were terminated ages ago.

Re: Yeti Airlines AT75 crash in Nepal

the incident aircraft followed the same track to VNPR until we lose it about 5km from the threshold, at what point in the approach were they advised to use Runway 12? \. That is a pretty much a text book reversal to an opposite end approach, at 1500 ft (3nm/5lm); turn right 45 degrees intercept the...

Re: Delta A330 Lands 6 Feet Short Of The Runway At Amsterdam

I wonder if the flight had landed 12 feet on the concrete, instead of 12 feet short, if the event would have been captured and investigated? Would FOQA have picked that up? The safety management system would have seen a short landing, along with the GPWS glideslope warning. I can see my (or the FOs...

Re: 737-800 Single Engine landing

As others have pointed out the TR on a 737 will not deploy if the engine has been shut down. Especially since the crew reduced their status to a Pan Pan it would suggest that either: ⋅ The engine simply flamed out with no apparent damage and they were able to restart it, or ⋅ Th...

Re: How are MELs practically handled at airlines?

For a light, for example a navigation light that was U/S on the walk around, advise the mechanic/engineering and write it in the techlog. The mechanic/engineering will carry out there procedure to try and repair the item, if it cannot be repaired (often parts are not right next to the aircraft) they...

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

Depends on the changes you are talking about, most changes can be incorporated during a normal planned maintenance check. A software update could happen during a weekly check. The manufacturers make a fair bit of money from their in service upgrades, The A359 has more range than the 769, many airlin...

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

Does anyone have any info on how the enhanced A350 optimizers the flap and slat positions for take off performance enhancement? As per the Airbus article. https://aircraft.airbus.com/en/newsroom/stories/2022-10-the-best-gets-even-better-a350-introduces-new-performance-and-airspace I think they woul...

Re: Yeti Airlines AT75 crash in Nepal

So Simon is wrong. The path shown in the Cabin Video is not consistent with an approach to the old Airport (way too high) but is consistent with a circling approach to Runway 12 (which is what they were planning) on the new airport when arriving from the East (which is where Kathmandu is). Accordin...