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Search: Posts Made By: YYZjim
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14th Dec 2019, 20:11
Replies: 4,656
Views: 4,789,309
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: 4,789,309
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: 4,789,309
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...
8th Jul 2019, 03:35
Replies: 4,656
Views: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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: 4,789,309
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...
Showing results 1 to 15 of 15


 
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