Can anyone explain to me why a turbofan engine has a minimum cool down time and what components are at risk if the proper procedure is not followed? I am a curious how this affects how quickly an aircraft can be turned for it’s next flight. Thx The main reason for the cool down is to stabilize the ...
Jump to postIn my mind, this is the real alarm bell here. It's clear how far they were off from the localizer, and it's clear that there was an imminent situation. And yet, they apparently lacked the situational awareness to understand why their landing clearance was canceled. The rest will all come out with t...
Jump to postI’m thinking more likely incorrect loadsheet cg leading to incorrect stab trim, or the crew setting the incorrect stab trim. If the stab trim was set for too much pitch up, on rotation it just takes a small input to start the rotation, and you need to set the correct attitude. The automatic trim wil...
Jump to postQuestion related to this. How would customs be handled for someone needing urgent medical care? Customs agents take them directly to US customs office after being released from the hospital? CBP should have all pax details in advance. The airline would place a call to them and then it’s up to the m...
Jump to postBoth fuselages are roughly circular and the widest point of both the 777 and A350 is near the armrests. There’s no getting around that a 10 abreast A350 will be a miserable experience. The A350 fuselage is not circular, nor does the floor intersect the fuselage half way. https://runwaygirlnetwork.c...
Jump to postIt would take several years to get it to market. You don't start developing it when there is already high demand. I don’t see it happening. To invest that much money internally, there needs to be a compelling business case presented to justify why such a development should be worthy of the companie...
Jump to postThe A350 NPS' cabin width is 6 inches narrower than the legacy 777, and 10 inches narrower than the 777X. That suggests 10-abreast on an A350 NPS would have seats and aisles 1/2 inch narrower than the legacy 777 (assuming the same width armrests). According to the 777 airport planning guide, on the...
Jump to postI travel through Manila quite often, and see Lufthansa Technics hanger area accommodating A380s from Lufthansa, BA, and Qantas. Not just Lufthansa that flies them so far from home for a major overhaul. I believe that the facility at MNL is to be expanded with another A380-dimensioned hanger, I hear...
Jump to postI'm aware of stands like that, what i am talking about is a situation like this where a 747-8 or A380 is the only aircraft large enough to intrude on adjacent stands That simply isn’t true, something minor like 10% of the gates in Riga can handle an aircraft the size of a 767. The vast majority of ...
Jump to postPolot wrote:$$$
Labor is much cheaper in Manila than Europe.
If an aircraft intrudes on a stand next to it, you cannot park another aircraft in that stand. I'd call that an impact to regular operations (at least depending on the airport) That happens at airports all over the world on a daily basis, a lot of stands at airports are 3 stands in one, can park tw...
Jump to postI meant to say that Latvia doesn't have a single airport that can accommodate an A380 without an impact to regular operations Those stands are deep enough to accommodate an A380, it simply would take up two stands as it hangs over by about 4m. I think one of those is a 72 m wide gate, you could pos...
Jump to postBefore they are being sent to Manila, if needed, all LH A380 are checked at Frankfurt. This is why I suggested it, being closer to DME than Manila. A speedy AOG repair might not need this. That is not my understanding, the heavy checks are done in MNL as these take up significant time and space in ...
Jump to poststormwave534 wrote:Latvia doesn't have a single A380 capable airport.
I hadn't claimed anything different. I am talking about the practical repair logistics and the closest A380 dock and such infrastructure available. No LHT would be booked out at least 12-18 months in advance. They don’t even have the capacity to do the LH A380 heavy maintenance, they are sent to MNL.
Jump to postFrom the photos they look mainly like Nixon structural fairings. Some of which maybe already covered by the CDL.
Perhaps they could do a 250 kt 10,000 ft ferry into XFW.
The 747-8 should be modern enough not to have D checks, just C checks
Jump to postOkay, suppose you have strong headwinds and some gusts, so you have to add 20 knots to your VREF speed. How does it know what flap setting to use based on the speed since you don't add the gusts into the FMC as far as I know. Additionally, as soon as you change the flap setting, you also change the...
Jump to postSome1Somewhere wrote:I wonder whether we'll see an airliner with auto-flaps, comparable to horizontal stabiliser auto-trim?
New question. Suppose on the initial performance calculation, you require 2A, so you select flaps 2. Then during taxi, the runway changes, so now you require 2B. Once you enter it into the FMC, do the flaps move automatically or do you have to reselect them. It would go to the new position and woul...
Jump to postWait. Now I'm confused. You're saying 1+F was not always the same degree of slats/flaps and internally the A330 already calculated that based on ZFW and CG and stuff? I understood the upgrade now to allow for 1+F a and b which can be selected directly in the MCDU to achieve different degrees. (Ther...
Jump to postGalaxyFlyer wrote:Try 10 hours of the quick donning mask clamped to your head
raffy wrote:What happened on the second pic from the top? Hail damage maybe?
So I took a trip this past Saturday morning (March 9, 2024) on an American Airlines Airbus 319 from BDL (Hartford, CT) to DCA (Washington, DC). I noticed two pieces of duct tape applied on the upper part of the right side (starboard side) engine pylon. One was applied in the flight direction on the...
Jump to postIt seems to me that some people are far too tolerant of pilots flying after having drink. If they are too drunk to meet the limits they should not fly. I have news for you. Pilots are not saints, there will be thrives, frauds, drug addicts, alcoholics, and even murders. They are a cross section of ...
Jump to postFly out of Scotland as a crew member and you will find out why. The most invasive crew security you will ever experience. You mean they're doing a proper job? Sounds like everywhere else needs to up their game. Perhaps on this occasion. But this is the same place that delights in confiscating tooth...
Jump to postDeselecting GPS is easy...... POS REF 3/3>GPS Nav key. That's universal across all Honeywell FMS models! You've never had to go there but give it 2 weeks and it'll be SOP at every airline when in that region :lol: GPS jamming results in a "GPS" message in the CDU scratchpad on the 777. My...
Jump to postAs a surveyor I'm curious how the aircraft's GNSS systems work. Are they only using one constellation? Between GPS/GLONASS/GAL/BDS our receivers can be picking up 30+ satellites at any given time, and that's in much less favorable conditionsfor satellite signal, dealing with tree cover and multipat...
Jump to postMy understanding is that inertial systems - including laser and MEMS gyroscopes - advanced to the point when star observation may be not a best alternative. That's why inertial system failure along with GPS spoofing sounds a bit fishy. Either bad programming like MCAS isn't one off but the state of...
Jump to postBA for example, are using an 8F/48J/40W/165Y config, so only 261 passengers. Even with a full passenger load you're looking at little more 25 tonnes, so 30 tonnes for cargo before hitting MZFW. You'd likely run out of volume before weight. Jayunited posted this previously in viewtopic.php?t=1437339...
Jump to postI would imagine Airbus will continue to evolve the cockpit that has thousands of copies of it flying around and not switch to one that has 100s. The reason the A220 looks "more modern" to you is the ratio of the screens to the panels they are installed in. The cockpit of the 737 MAX looks...
Jump to postDoesn’t matter, the aircraft certification requirements do not account for disabled passengers.
No requirement for example to have a floating stretcher.
In case of an emergency evacuation or even ditching, how can the patients be evacuated? The simple fact is they will do their best. However take note that passengers with disabilities will never be placed next to an emergency exit. They will have a person to assist them, however the regulations sim...
Jump to postThat doesn't make a lot of sense. The 350 and 330 have much less in common than do the 330/340. It comes down to pilot type rating requirements, a pilot on a 330/350 needs to demonstrate the ability to land with one engine out. Where a pilot on a 340/380 needs to be able to land with 2 engines out....
Jump to postWell the A350 simply uses the engine air data on the PFD is the aircraft air data fails.
Jump to postThis uncontained engine failure was clearly an emergency imo. I am aware of the regs in the US whereby a "simple" engine failure in a quad is by definition not an emergency. However the PIC can always declare, and sometimes they do. I don't know Australian regs. Overweight landings are fa...
Jump to postkalvado wrote:Pardon me, but what did you just say?
Finally, some have mentioned QF32 as an example of great human decision making and skill. IIRC, the crew spent OVER TWO HOURS running blue ECAM procedures. I've got a suggestion: How about landing ASAP? It all ended up well, and so the crew is lauded as heroes, but I question the decision to clear ...
Jump to postIn general, steady state airspeed can be calculated as a function of thrust, pitch, weight - maybe something else. Actually would be a very good sanity check to have calculated airspeed compared to measured one, and raise a flag in case of significant discrepancy. A must if onboard computational re...
Jump to postI’m pretty sure most US rail is two-crew. If automation is so perfect, why do we any train crews? The damned train is only one dimensional. Some trains elsewhere are, in fact, fully automatic. DB (German railways) is planning to move to driverless trains in the long term. My company builds all kind...
Jump to postQatara340 wrote:I'm surprised CX and QR didn't resurrect their relationship and for CX to fly to DOH. I know QR flies to HKG on CX-leased aircraft but its QR operated.
Whats the history behind the BKK and TPE minihubs? Were they acquired and was there a specific purpose for them? BKK, SIN, TPE, and HKG are all very open ports to anyone. Think at one stage there were something like 120 airlines serving HKG. The relationship between TPE and HKG stemmed back when di...
Jump to postskipness1E wrote:Cathay was an Australian boys club for decades but they're all HKG based now.
My 20 years in AC Maintenance I’ve never seen a gear had to be changed due a hard landing. Of course AA has spare gears. You don’t operate hundred of planes with no spare landing gears. Gear changes are relatively common. Landing gear is designed for safe life where most of the rest of the structur...
Jump to post2 questions. 1. Does a compressor stall warrant a "Pan Pan Pan" call? 2. Did they have to dump fuel? It hasn't been confirmed that it was just a compressor stall. If you look at the footage, parts of the engine were being ejected out the exhaust in addition to flames. I suspect it's more ...
Jump to postchunhimlai wrote:https://www3.nhk.or.jp/news/html/20240116/k10014323461000.html
Details are unknown but it seems that all pax are safe and no fire occurs
Aircraft involved likely to be HL8249 (B739) & B-HNW(B773)
One aircraft under tow clips another parked at the gate, move it a couple of feet,
Jump to postB777/A350 command with only 3000hrs. Unbelievable The headline is a little misleading, generally speaking other than the captain, other crew members can only log flight time when they are in the seat, some pilots will be in the aircraft for 900 block hours in a year, and only log 3-400. That’s the ...
Jump to postIt's also "a lot simpler" to drive cars than flying airplanes ;) A wireless system can have multiple antennas (all non-ancient WiFi access points do) and only one needs to survive in order for the system to work. There are also "leaky cables" that work as an antenna along the en...
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