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NTSB issues investigative update on B-767 runway excursion accident in Miami

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Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#121
post #31

Earlier quoted context omitted.

You're being downvoted because actual qualified aviators are telling you how egregious of a mistake this looks to be, and you're quibbling with them without any professional credibility on the subject. Sincerely, A former military aviator

In any aviation incident, it’s generally a good idea to wait for the full NTSB report before drawing any firm conclusions. That said, it is exceedingly difficult to find any explanation for what happened in this case that doesn’t boil down to incompetence or gross negligence. There were so many opportunities to avoid this accident. The crew seemingly more or less single-handedly punched a hole straight through the en…

> In any aviation incident, it’s generally a good idea to wait for the full NTSB report before drawing any firm conclusions.

It's also pretty rare for the NTSB to release this much information ahead of their full report. I wonder why.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#122
I know that it's not a luxury that all metro areas can implement, but if you look at airports like Denver or Kansas City, there is a very, very good reason that those airports are out in the middle of nowhere. Lots of accidents happen close to the runway, either on takeoff or landing. It's better that it be in a field than a road or building filled with people.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#123

Earlier quoted context omitted.

Get-there-itis is - quite famously - a pilot's internal desire (note: written before your ninja edit). Sure there have been plenty of incidents. Can you point to one in the US, with pilots flying big planes, that hasn't led to regulatory change? Its worth pointing out that pilots are almost always paid by flight hour. In other words, they get paid more to go around.

The worst aviation accident ever had this as a major contributing factor, the KLM plane at Tenerife was almost near their maximum crew time so if they didn't take off soon they'd have to stay overnight. That one did lead to major regulatory changes. It wasn't in the US though but there was an American plane involved (which was not to blame)

Yep, that 49 year old disaster led to major changes, which is why I’m dubious that corporate pressure was involved here.

Note: Both planes were American. One of the carriers was not. NTSB gets involved whenever it is a US carrier OR manufacturer, so they have a ton more data than just US carrier incidents.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#124

So many mistakes. A notable part is this: >> CVR: 00:15 A pilot called for a go-around. >> FDR: 00:15 Brakes were released at a groundspeed of 120 knots and throttles were increased to a value consistent with go-around thrust. >> FDR: 00:11 The throttles were reduced to idle power and the brakes were re-applied. The groundspeed was 117 knots. The throttles remained at idle, and brakes remained applied until the end o…

> unclear how speed didn't increase How can you comment as if you are knowledgeable enough about aviation to speak on this with authority, but you aren't aware that turbofan engines don't have instant throttle response and need time (up to 8 seconds) to spool up? I think a little more restraint is warranted in something like this if you don't know something that basic. You can actually do the math to work backwards a…

> How can you comment as if you are knowledgeable enough about aviation to speak on this with authority, but you aren't aware that ...

This is par for the course for HN; smart people applying first-principle thinking on unfamiliar domains for about a minute, which confirms the biases of other outsiders who vote the plausible, but not-quite-right comments to the top.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#125
post #90

Earlier quoted context omitted.

They didn't have much runway left at 00:15 and were far slower than 158 at that point. They came in far too fast, descending too rapidly; first touch was >50% down the runway, and they didn't get the left gear down, so the spoilers and brakes didn't apply until even later. Should have had a better approach; should have gone around before they even touched the ground; conditional on the bad approach and first touch, t…

> But they made the wrong choices at all of those points. This tends to be something we see in most incidents, because the cases where someone makes the right choice at one of the points tend to not become incidents. An interesting thought is that the more obviously bad/incompetent/terrible decisions or (in)actions were involved in an incident, the better it is, because it means more things had to go wrong for a disa…

Yeah, to some extent. But you see a lot more of this in GA (or Part 135) than in Part 121 airline operations. This was exceedingly bad judgement by real professional pilots in a 767.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#126
A few observations to add context (partially stolen from PPRuNe):

- Pilot Flying (PF) was the Captain, 55 yo (presumably) more experienced pilot, who only got certified to fly that type (B767) in May

- Pilot Monitoring (PM) was a 38 yo first officer, also not very experienced on B767

- PF made a number of mistakes, going too high, too fast (partially because he was descending too fast), not catching the glidescope on time

- PM was concerned that the approach/descent was abnormal but kept his mouth shut as the more experienced captain was at the controls (Edit: apparently he did speak up but PF did not acknowledge)

- PM lowered the flaps much later than required (PF orders flaps lowered and PM executes, but flaps can only be lowered when aircraft goes below certain speed) and the flaps were lowered all the way as the plane crossed the runway threshold, which likely caused plane to "float" and overshoot even further

- Plane touched down too late, and left wheel even later, which likely precluded some braking mechanisms from activating (or the PF forgot to since was busy trying to put the thing down)

- PM finally said "too fast, go around" but PF ignored him (or likely did not hear)

- In these situations PM has the right (and obligation) to take over the controls and start go around by themselves, but he didn't, presumably because the Cap was driving

- PF finally panicked and started the go around procedure, bit realized it was too late almost as the front wheel exited the runway, idled the engines and reapplied the brakes.

So, yeah...

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#127
post #2

tldw, per Blancolirio: unstable approach, crew should have done a go around at 1000 agl but did not attempt one until it was too late, then aborted the go around.

I think the real question is why didn't the pilots do a go around. I bet there are underlying pressures from the airlines and/or amazon to not do a go around to avoid schedule delays or fuel costs.

Normalization of deviance. While there may have been some pressure from corporate or whatever, my guess is that the pilot flying was the one who only got his type rating a few months ago and that he'd done this at least a few times before in another type and gotten away with it. Now in a bigger, less nimble craft, he didn't.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#128
Not enough info yet. Clearly they landed too fast, but why? Was there some problem on approach which caused a fast landing? NTSB hasn't gotten to that part yet.

From the timeline, one pilot knew they were too fast 90 seconds before touchdown.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#129
>A pilot called for flaps to be set to 20 degrees, and the other pilot cautioned they were too fast. The other pilot made additional comments regarding the aircraft’s excessive speed throughout the remainder of the recording. There was not a consistent verbal response to the comments about speed.

Wow, The Rehearsal season 2 flashbacks. Although the show was mostly pure absurdity, the central claim of crisis in cockpit communications / lack of adequate FAA mandated training around interpersonal dynamics was spot on.

Re: NTSB issues investigative update on B-767 runway excursion accident in Miami

#130

Earlier quoted context omitted.

I think the real question is why didn't the pilots do a go around. I bet there are underlying pressures from the airlines and/or amazon to not do a go around to avoid schedule delays or fuel costs.

I've never heard of anything even close to this. Airlines in the US do not pressure pilots to avoid go arounds. Pilots in the US do not delegate life or death decisions to ops, especially since the FAA legally holds them accountable for that. All pilots are aware that they are responsible for the decision to go around or not. Any airline found to be pressuring pilots to avoid go arounds would be in a world of pain wi…

We are talking about the same company that forces its employees to piss in bottles while driving to save time.
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