or (maybe)

Thinking that the AutoPilot was engaged when it was not the case

Most likely so

Spoke to a couple of current SO guys. 400ft AP on is SOP. Time will tell if it was on or off though.

if true this is extremely sad...

The reason behınd having test pilot in LHS was... it was development test flight.

AFCS software fault, whıch was so tragically discovered by Nick Warner's crew, was corrected before 330 went into production.

I wonder - if the system could inadvertently get into 'balked landing and a go-around' situation' - TOGA / IDLE after take-off ?

'… the auto-throttle remained engaged in the IDLE mode when the flight crew advanced the thrust levers to conduct a balked landing (a go-around initiated after touchdown, but before the thrust lever selection). Once airborne, the thrust levers moved back to idle.'

https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSAIB.nsf/dc7bd4f27e5f107486257221005f069d/b250f3003abca8a7862586220083a35a/$FILE/AIR-20-19.pdf

SAIB AIR-20-19

https://rgl.faa.gov/Regulatory_and_G...9?OpenDocument

SaylGoodman

Why? Busiest airspace I’ve ever encountered along with not great ATC.
If a colleague informs me they’ll be hand flying it I don’t say anything but do think to myself WHY?

400’ AP on as SOP is sad. Busy could be an excuse, but during this pandemic hardly any movement at all. And in busy airspace one could hand-fly easily. Myself and most of the colleagues do it all the time if the situation permits.

400 A/P in JFK or LHR is prudent.

Thinking you are 'handflying' a 777 when following the FD with ATHR engaged is sad.

Totally agree and there speaks another professional pilot. The guys who think they’re ‘part’ of the aeroplane and want to ‘feel’ it are only increasing the workload for their colleague.
Leave the machoism to the film set.
PS and two weeks ago JFK seemed as busy as ever for departures.

I was there a couple of days ago. Not busy at all. By all means putt it on at 400’ if you want. But having that as a “Standard Operating Procedure” is sad. If my colleague wants to fly manual in JFK airspace I’m usually ok with that. Turning the heading bug and pushing a few buttons doesn’t usually overload me. That is if the situation permits. Las month I flew raw data into HKG. Its a miracle I am still alive ;)

Modified from my earlier post......

Airspeed Low warning? It has been a while since I flew the triple but don't you only get a quadruple chime for the airspeed low caution(along with some visual indications such as FPV which disappeared when the flaps were retracted) followed by stickshaker.

When I turn the volume up on the video, it sounds to me like the autopilot disconnect warning(siren). It is rarely heard because the pilot usually clicks the autopilot disconnect button twice. But the second click may not happen on occasion such as stressful situations.

Overspeed warning? I suppose you get a siren for an overspeed as well, but the pilot on the radio was saying stall repeatedly, so excess speed was probably not the issue.

Disconnecting the autopilot is a plausible scenario in a low speed situation.

Our company had a similar event when the slats were retracted accidentally at too low an airspeed by the F/O.

early flaps 1 retraction by PM that triggers “airspeed low” caution, PF pitches down to gain speed, PM freaks out and selects flaps 5 (placard speed 245kts) and exceeds Flaps Speed triggering the siren.. 🤷🏻‍♂️

This is a good explanation of what may have happened, the presenter is a current 777 pilot.

Not in a 777, but I used to hand fly to and from JFK all the time. Especially fun with the Breezy point and Canarsie climbs, and of course the VOR 13L/R.

DH, very nearly correct but I'd like to correct some of your terminology. The speeds you mention that are referenced to Vref are the FLAP maneuvering (US spelling) speeds, not the minimum maneuvering speeds which are generally about 20kt+ lower than the equivalent FLAP maneuvering speed.

The minimum maneuvering speed for the current flap setting is shown on the PFD speed tape as the top of the top of the amber band and the flap maneuvering speed is shown as the number of the current flap setting e.g. for Flap 5, a green number 5 on the speed tape. Source: 777 FCOM 10-10 > Controls and indications > Primary Flight Display (PFD) > PFD indications

The Vref +20, 40, 60 & 80 speeds are the FLAP maneuvering speeds for F20, F5, F1 and Flap UP respectively and are the speeds we would normally fly as a minimum with those flaps settings but they aren't the minimum maneuvering speeds, which are always lower. Confusing isn't it?

Finally Vref+80 is normally referred to as 'minimum clean speed' but, as above it isn't the minimum maneuvering speed clean.

it's a bit like explaining the laws of cricket.

I believe 400" is Boeing SOP for the 777 and 787. Pretty sure SO is still using Boeing as its training vendor but that may have changed.

Nothing could be further from the truth...Other than a meeting with the safety folks facilitated through the union and perhaps some retraining (unless someone lies) there won’t be any “tea and biscuits” with the CP! As long as you fess up to your screw ups it’s pretty non punitive over here. Most 90% of screw ups over here In the US that would land you a letter of warning when I was an expat in the gulf would be deidentified and used solely for trend analysis and highlighted by the training department in the next recurrent, you wouldn’t even so much as get a phonecall.

Spooky 2;

i don’t think it’s SOP, but rather the minimum. That’s when I engage it in the sim. I’m pretty sure most airlines and authorities recommend using automation to reduce workload in high workload environments.

That is plausible. There is a gate to prevent(or at least slow down) rapid, inadvertent flap 5 selection from the up position making it less likely to be selected inadvertently.

But as I like to say when it comes to aviation incidents.....If it can somehow happen, it has happened.