Live data from Hacker News

A Lufthansa A350's frustrating Oakland diversion

onemileatatime.com

121–130 of 413 posts

Re: A Lufthansa A350's frustrating Oakland diversion

#121
A couple of things to add:

Having watched the planes land at SFO at night provides an additional context. There are often two long streams of planes, like a spaced necklace, coming in to land. They look far apart when flying but then you notice just have fast another one comes.

And to those who fault the traffic controller - it is on the controller if something bad happens. Politeness, even a charge of grumpiness goes out the window in the face of that responsibility. Period. IMHO.

Re: A Lufthansa A350's frustrating Oakland diversion

#122

I see this as a reap what you sow moment for Lufthasa. Why should ATC at a busy airport be so accommodating? Lufthasa is the one making this hard on everyone. I used to watch both these airports fairly frequently from Oyster bay regional park, they are both super busy with flights often lining up to the horizon.

Driving south on a clear night on Highway 101, from SFO on down, is a neat experience because you can see these planes lined up clearly for about 20 miles. All the way down to the South Bay and beyond.

Re: A Lufthansa A350's frustrating Oakland diversion

#123
post #29

There's a follow up video to the one linked in the story that provides a lot more context missing in this piece. https://www.youtube.com/watch?v=4zHxdn8oz20 Basically, SFO normally does VFR parallel approaches at night. Approach sequences these approaches miles beforehand, so there can be a chain of 10-20 aircraft all sequenced to land before responsibility is even transferred to SFO's tower. The incident happened du…

I think the FAA leadership is ultimately in the wrong for allowing their area of responsibility to deteriorate to the point where a controller and a pilot were put in this situation.

They have a controller shortage that they are not doing enough to fix, and they have a troublesome airport with limited capacity to accommodate traffic, that they are being too bureaucratic about fixing. The controllers at SFO have used a number of tools to address the handicap, but the FAA recently put a lid on that by forbidding side-by-side IFR/VFR approaches while also failing to authorize custom precision landing procedures like SOIA.

The request for ILS is entirely reasonable in this context, and the decision to hold the flight out of the sequence is also reasonable in the context, but to hold the flight with no updates for half an hour is not reasonable and to require it to divert is not reasonable either. The FAA should be held responsible for planning things better than this.

Re: A Lufthansa A350's frustrating Oakland diversion

#124
post #29

There's a follow up video to the one linked in the story that provides a lot more context missing in this piece. https://www.youtube.com/watch?v=4zHxdn8oz20 Basically, SFO normally does VFR parallel approaches at night. Approach sequences these approaches miles beforehand, so there can be a chain of 10-20 aircraft all sequenced to land before responsibility is even transferred to SFO's tower. The incident happened du…

You're leaving out that they had a filed flight plan which for an international flight means controllers had many hours of notice as to when the flight was scheduled to arrive and that they would be looking for an ILS approach and it was the responsibility of approach controllers to have a spot in the pattern for them. They arrived in the area on time, and controllers had not allocated it a spot, which is why the pil…

I think the real issue is they promised 10 minutes max then once 15 minutes elapsed and the pilot complained, tower told the pilot to GTFO. It just feels wrong.

Re: A Lufthansa A350's frustrating Oakland diversion

#125
post #104

Earlier quoted context omitted.

Lufthansa does what the FAA recommends and SFO had air canada almost landing on the taxiway because of the visual approach not too long ago. So calling it an asshole move is turning things around.

So punish everyone because of Air Canada's fuck-up?

It's not punishment. The reason air travel is so safe is because every near-miss is root-caused and policies are put in place to prevent the same cause from resulting in a future accident.

Re: A Lufthansa A350's frustrating Oakland diversion

#126
post #119

Earlier quoted context omitted.

No, that's also not how it should work. Airports have a certain capacity, that's why you use slot allocations at crowded ones. You can say that day was so botched that they blew the one plane in fav of all the others, but that is not how it should work, telling a plane with an allocated slot you cannot even have a realistic estimate when we will fit you in.

You’re not wrong, but don’t forget that they were three hours late. This is really why airports operate on a first–come first–served basis; someone is always late.

Ah ok thanks, did not get that at all.. then more understandable.

Re: A Lufthansa A350's frustrating Oakland diversion

#127

Earlier quoted context omitted.

Pilot was bluffing. If they call an emergency, they can do whatever they want. But they can't just call a fuel emergency if they have enough fuel to divert to a viable alternate - that's not how the system is supposed to work. They're supposed to divert if they get close to minimum fuel and can't land at their primary airport. Of course, if it's a real emergency they can call any emergency (weather at alternate preve…

It's a safety issue when the plane is getting low on fuel and the crew are fatigued from a long international flight, and the only reason they're being told no is because of policies designed to maximize airport/airline profits. Controllers had hours of notice the flight would need an ILS approach. They petulantly ignored it because ILS approaches take up more space in the pattern, which means less landings per hour,…

Crew fatigue is not an ATC concern. Long haul flights like this carry relief pilots and have crew rest facilities so fatigue shouldn't be an issue in the first place.

Controllers mostly work for the FAA. They have volume goals to meet, but they aren't accountable to airport or airline management for profit targets.

Re: A Lufthansa A350's frustrating Oakland diversion

#128
1/ Visual vs instrument approach. The main difference in this case is separation requirements that ATC must provide. Specifically, under IFR rules ATC mus provide 3 miles / 500 feet altitude separation minimum. For visual approaches, the separation is responsibility of the pilots and this enables parallel runway landings at SFO with much shorter intervals (there is a version of parallel landings with instrument approaches at SFO but it discontinued during Covid and not resumed since AFAIK).

2/ The approach sequence is established long long long before arrival to the airport. The ATC controllers (approach and center) coordinate arrivals and create sequencing hundreds of miles from a large airport like SFO. The last minute Lufthansa request for an instrument approach would have forced dozens of planes to go into hold or fly vectors which creates a lot of work for everyone.

3/ SFO tower is NOT responsible for approaches and was not dealing with holding Lufthansa. This is responsibility of NorCal approach

4/ My personal take is that Lufthansa should have advised ATC that they need instrument approach much earlier (as soon as they got ATIS which would be 50-100 miles from airport). That would have enabled ATC to create a gap for them. Last minute request is a surprise nobody needs. The Lufthansa attitude afterwards is unacceptable. They were asking for preferential treatment (get us in and screw a couple dozen of other airplanes). They also should have communicated to ATC that they have 30 mins of fuel for hold and that would informed NorCal about time limits they are working with. Lastly, threatening ATC with a fuel emergency.... not nice, not nice at all. From my personal experience with ATC is that they are very accommodating but they don't like surprises. Tell them what you want early and controllers usually find ways to make it work by the time you get there. Have a last minute request? If ATC is not busy they will help you. If ATC is busy -- go to the back of the line. Which is exactly what happened here.

Re: A Lufthansa A350's frustrating Oakland diversion

#129

https://youtu.be/o7RId2iiZng?si=ERMLyrSwkrLL6xmh Recently there was a separation issue with a very similar night time visual approach into SFO. It's not like trying to squeeze two flights into close parallel runways at the same time to maximizer capacity is a very safe thing to do considering everything that could go wrong

I really worry that SFO is going to have a major disaster. There have been so many close calls recently, the controllers have been making mistakes and acting out against pilots, there are 4 runway intersections (which other major airports are phasing-out), they have a fog problem, and an enormous amount of flow, and tons of air traffic and airports all around them.

Re: A Lufthansa A350's frustrating Oakland diversion

#130

A couple of things to add: Having watched the planes land at SFO at night provides an additional context. There are often two long streams of planes, like a spaced necklace, coming in to land. They look far apart when flying but then you notice just have fast another one comes. And to those who fault the traffic controller - it is on the controller if something bad happens. Politeness, even a charge of grumpiness goe…

Being rude and grumpy a) tilts everyone else, b) everybody's cortisol levels to up, c) cortisol stress impairs cognition especially problem solving and interpersonal skills, d) thus INCREASING the risk of mistakes and accidents.

Modern psychology, more professionals should keep updated about it.

Post reply on HN