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Search: Posts Made By: YYZjim
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Forum: Tech Log
6th Jul 2020, 06:15
Replies: 76
Views: 10,544
Posted By YYZjim

I don’t think that large passenger aircraft will...

I don’t think that large passenger aircraft will ever be designed for a single (human) pilot. I think that the transition, when it comes, will be from two to zero.

Unless the pilot is chained...
30th Jun 2020, 21:53
Replies: 3
Views: 1,687
Posted By YYZjim

Poor Kiwis. They have locked themselves down so...

Poor Kiwis. They have locked themselves down so tightly that they haven't had any Covid cases for weeks. While that sounds like perfection, there's a hidden cost. Namely, that they'll have to stay...
30th Mar 2020, 05:29
Replies: 89
Views: 46,966
Posted By YYZjim

Pretty much everybody here in Ontario is in...

Pretty much everybody here in Ontario is in stay-at-home mode unless they work in an essential
business. So, I'm sitting at home. All well, but sitting at home nonetheless.

Some months ago, the...
14th Dec 2019, 20:11
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

On December 12, LowObservable gave a link to an...

On December 12, LowObservable gave a link to an article from “The Air Current”.

The article describes “week-long trials inside Boeing’s 737 Max engineering simulator focused on the human...
23rd Jul 2019, 12:13
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Grandma's advice to fly low and slow might be...

Grandma's advice to fly low and slow might be true after all. Keeps the flaps out and gives
the CPU a chance to keep up.

YYZjim
19th Jul 2019, 00:11
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Implications of AF447 lawsuit It has been...

Implications of AF447 lawsuit

It has been disclosed (see another thread) that prosecutors in France have brought a lawsuit against Air France in the matter of AF447's mid-Atlantic crash. I...
Replies: 73
Views: 44,021
Posted By YYZjim

Racing to the bottom. When margins are high,...

Racing to the bottom.

When margins are high, a company can afford to be kind to its employees. Think of nap stations at
Google and free lunches at Facebook.

Airlines suffer from about the...
8th Jul 2019, 03:35
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

About the Non-Disclosure Agreements (NDAs). ...

About the Non-Disclosure Agreements (NDAs).

NDAs typically arise when a company with proprietary technology intends to have a voluntary discussion about the technology, or stuff relating to it,...
8th Jul 2019, 03:31
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Final minutes of Lion Air LT601 (accident...

Final minutes of Lion Air LT601 (accident flight).

It is true, if proper procedure was followed, then the PIC handed control over to the SIC at a peaceful moment when the airplane was reasonably...
7th Jul 2019, 22:09
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Hopefully, the final report into the accident...

Hopefully, the final report into the accident will include the FDR traces for the elevator position, which were not in the preliminary report. That would clear up some of the uncertainty. Of...
7th Jul 2019, 21:44
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Dear Alchad: The two traces of interest in...

Dear Alchad:

The two traces of interest in the chart are the red one labelled CCForce_PitchCWSLocalFDR() and the green one labelled CCForce_PitchCWSForeignFDR(). As I understand it, the "local"...
7th Jul 2019, 20:20
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

There has been a fine debate between two posters...

There has been a fine debate between two posters about the handover of control from PIC to SIC on the Indonesian LT610 accident flight. One can deduce from the ATC transcript that the PIC handed...
1st Jul 2019, 01:13
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Oops. The 737 stabilizer trim motor is much...

Oops.

The 737 stabilizer trim motor is much more sophisticated than I had envisioned. I've attached a brochure from Eaton's plant in India. It's a three-phase motor, with an internal processor...
1st Jul 2019, 00:27
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Thanks for the clarification, ARealTimTuffy ...

Thanks for the clarification, ARealTimTuffy

Two-speed control is something that can be handled quite nicely using relays and a passive component or two. If the original 737 also trimmed using...
1st Jul 2019, 00:07
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Question about trim motor speed A couple of...

Question about trim motor speed

A couple of posters have mentioned both direction and speed as inputs to the trim motor. Is the motor speed really variable (I doubt it), or does the motor run at...
28th Jun 2019, 20:21
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Re: Regulators joining forces (post #779 c.f.) ...

Re: Regulators joining forces (post #779 c.f.)

Back in the 1930s, when the FAA and the EASA's British and French precursors were in their formative stages, there were lots of airplane...
27th Jun 2019, 00:34
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Hello yoko1: Re: No computers in that...

Hello yoko1:

Re: No computers in that circuit

My only knowledge about 737 electrical systems comes from PPRUNE. (So I'm a fully-informed expert, right?) In the early days of this thread, back...
26th Jun 2019, 23:45
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Hello ve3id: You are right about one thing...

Hello ve3id:

You are right about one thing -- nobody in the aviation world uses Microsoft Windows, or any other widely-used operating system, in airborne components. They write their programs...
26th Jun 2019, 23:08
Replies: 4,656
Views: 4,434,813
Posted By YYZjim

Re: Hardware capacity IIRC, the 737...

Re: Hardware capacity

IIRC, the 737 computers use the old 80286 Intel processor. (Ah, those were the days; you could still access the I/O ports directly.) It is easy to see how adding extra...
Forum: Tech Log
25th May 2019, 15:00
Replies: 117
Views: 30,680
Posted By YYZjim

1. Fly in any direction for five minutes 2. Fly...

1. Fly in any direction for five minutes
2. Fly the reverse course for five minutes
3. Divide displacement over ground (from GPS device) by ten minutes
4. Result is wind velocity

YYZjim
19th May 2019, 21:24
Replies: 107
Views: 103,528
Posted By YYZjim

MCAS: Stick-force corrector or anti-stall device?...

MCAS: Stick-force corrector or anti-stall device?

We are constantly reminded that MCAS is not an anti-stall device. It was introduced solely to cause the forces pilots experience from the yoke...
11th May 2019, 16:50
Replies: 93
Views: 62,444
Posted By YYZjim

Dear Mr. 737 Driver: It looks to me like...

Dear Mr. 737 Driver:

It looks to me like some posters on this forum have decided that you are employed by [redacted] and are spreading bad thoughts. I don't think that, and I appreciate the...
11th May 2019, 16:31
Replies: 3
Views: 2,138
Posted By YYZjim

New EoR separation standard at YYC

NAV CANADA just became the first ANSP in the world to implement a new ICAO standard: Established on RNP-AR (EoR).

The new separation standard, implemented at Calgary International Airport (YYC),...
10th May 2019, 15:05
Replies: 93
Views: 62,444
Posted By YYZjim

An important step in the re-gaining trust process...

An important step in the re-gaining trust process will be for pilots to think through how the Lion and Ethiopian pilots would have coped if they had been using Boeing's MCAS fix (whatever it turns...
1st May 2019, 16:59
Replies: 5,120
Views: 10,638,300
Posted By YYZjim

Who owns the CVR and FDR data? A complete...

Who owns the CVR and FDR data?

A complete CVR transcript would shed a lot of light on the question of whether or not an MCAS runaway is beyond the capability of the average MAX pilot. A complete...
Showing results 1 to 25 of 41
 


 
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