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Boeing 737 Stall Escape manoeuvre, why MAX needs MCAS!!

Name: Boeing 737 Stall Escape manoeuvre, why MAX needs MCAS!!
Description: Mentour Pilot, a 737 instructor, explains the approach-to-stall and escape manoeuvre and why the 737 MAX needs MCAS while the 737NG did not. He covers the jackscrew and pitch behavior in terms a general viewer can follow.

Mentour Pilot

4 videos recommended on HN

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2 HN users recommended this explainer2 months2019–2020 score 2

Years with an HN recommendation, 2007–2026

HN people recommend it as an easy-to-understand pilot's explanation of the 737 MAX MCAS issue.

Mentour Pilot, a 737 instructor, explains the approach-to-stall and escape manoeuvre and why the 737 MAX needs MCAS while the 737NG did not. He covers the jackscrew and pitch behavior in terms a general viewer can follow.

“It's not very technical, but very easy to understand.” (HN, 2019)

2 recommendations · 1 citations · Explainers · partly dated

Aviation & aerospace engineering Explainers Engineering, Transport & Making

3 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@mastazi Mar 2019 Recommends

on HN thread 737 Max Explanation by a Software Engineer

If you have 20-ish minutes to spare, I suggest this video about the same topic by Mentour Pilot who is a 737 NG captain: [this video] It's not very technical, but very easy to understand. Assumes you have some basic aviation knowledge e.g. what a stall is and how weight & balance affects flying.

Easy-to-understand 737 captain explanation of the MAX issue.

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@catalogia Feb 2020 Recommends

on HN thread Boeing identifies new software problem on grounded 737 Max

> And of course, the main problem that the whole, entire airplane is unstable in the air. That's not really true. The airframe is fine, except it doesn't handle like a 737. MCAS was meant to make the MAX handle like a 737. Mentour Pilot, a 737 instructor with a youtube channel, has covered this fairly extensively: [this video]

Extensive coverage of MCAS from a 737 instructor.

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Citations, criticism and jokes

@darkpuma Apr 2019 Cites it

on HN thread Ethiopian Airlines 737 MAX Investigation Preliminary Report

> "decided to move the engines forward making the aircraft dynamically unstable," I don't believe that's true. Per Mentour Pilot, the 737 MAX and the 737 NG are both very stable aircraft that are not prone to stalling[0]. That there is a difference in performance characteristics that creates a difference in how an escape from stall maneuver is to be performed, and the MCAS is meant to paper over that difference. [0] [this video] @16:25 "[...] The 737 MAX and NG are equally less indicative of getting stalled, okay? They are very good, very nicely flying aircraft. But once they're in a thrust stall, they have slightly different characteristics. [...]"

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