Recent posts

1

Hangar 7 / Re: Go-Around procedure question

« Last post by Britjet on Tue, 18 Jan 2022 14:51 »

Yes, I believe that the preferred Boeing procedure is to use VNAV. It came into being quite late in my career and I never cared for it much..
Peter.

2

Hangar 7 / Re: Go-Around procedure question

« Last post by Will on Tue, 18 Jan 2022 13:50 »

Are you saying now that VNAV is the preferred vertical mode to select at acceleration height? This can also lead up to runaway speed unless the missed approach segment or hold has published speed restrictions, or unless the crew speed intervenes, which adds a step because you have to dial the speed right back down to what it was.

I guess the workload ends up being lighter with VNAV as long as you ensure a speed restriction on the missed approach procedure, is that right?

Thanks for your input!

3

Hangar 7 / Re: Question about windshear Go/Around

« Last post by BEL747 on Tue, 18 Jan 2022 09:23 »

Hello Hardy,

Thank you for your answer.

It makes more sense now!!

That could very well be the only reason. Nothing being mentioned about a different logic and possible different ATHR logic during WS...

Thank you,

Best Regards,

BEL747

4

Hangar 7 / Re: Go-Around procedure question

« Last post by Britjet on Tue, 18 Jan 2022 09:11 »

My memory is getting hazy now!
I think it was a catch-all in the event that the GA had achieved an Altitude capture before another basic mode was selected. In which case the thrust would not reduce until a flap limit speed was reached - highly inconvenient.

Try a GA without changing any modes until it captures an altitude, and you will see that the speed just runs away.

In any case the FLCH procedure has become secondary to pressing VNAV.

Peter

5

Hangar 7 / Re: Go-Around procedure question

« Last post by Will on Tue, 18 Jan 2022 00:18 »

Thanks, that’s helpful. And the video is the first Go-Around video from BritJet’s tutorials, in the PSX tutorial page.

It would make sense to me that it’s a company SOP, but I’m still unclear on why SPD needs to be pressed.

6

Hangar 7 / Re: Fuel Quantity: Source of truth?

« Last post by John H Watson on Mon, 17 Jan 2022 23:54 »

Yes, the override feature is still available with the fake CALC. That's how you enter a manual fuel value if a fuel value is not available due to faulty tank sensors prior to departure. DELETE clears the manual entry.

7

Hangar 7 / Re: Go-Around procedure question

« Last post by localiser on Mon, 17 Jan 2022 22:53 »

Haven’t seen the video, but.. When not using VNAV the normal GA procedure would be to press FLCH and just select the speed you want, and once at the planned speed, to press the THR switch. THR changes the reference thrust limit (in green on EICAS) to CLB or CON after a GA (depending if one engine is inop).

Pressing the speed button as you describe could be a company sop, not everyone does that.

8

Hangar 7 / Re: Go-Around procedure question

« Last post by Jeroen Hoppenbrouwers on Mon, 17 Jan 2022 22:43 »

It is to make sure you don't push THR, because that would cause the wings to drop off.

9

Hangar 7 / Go-Around procedure question

« Last post by Will on Mon, 17 Jan 2022 17:48 »

Peter, this one might be for you...  :-)

In a certain video tutorial on go-arounds, the recommendation is to achieve acceleration height and then press FL CH and then press SPD, with the side note that the SPD switch will not illuminate (yet).

I've been practicing some go-arounds both with and without pressing the SPD switch, and I can't see the difference. Either way, the mode annunciator on the PFD ends up showing SPD | HDG SEL | ALT and the speed switch illuminates, and the MCP speed is controllable with the speed knob. Why is the recommendation there to press SPD?

Thanks.

10

Hangar 7 / Re: Fuel Quantity: Source of truth?

« Last post by Will on Mon, 17 Jan 2022 14:16 »

If you update PSX to show the fake word "CALC" before engine start, will the crew still be able to overwrite it with a manual value?

It would seem to me (no 747 experience) that the overwrite feature would still be available when "CALC" is displayed pre-engine start, regardless of whether the CALC word refers to CALC or SENSED.