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A comment on Boeing 737 Max to Resume Flying U.S. Passengers Today. Parent comment

Re:Boeing 737 Max to Resume Flying U.S. Passengers Today by tyingq on Tuesday December 29, 2020 @11:02AM (#25571063)
Odd that it doesn't mention the sawtooth pattern on the rear of the engine cowling, or the flat bottom shape of the engine as you look into the intake, versus the normal round shape for non-max/leap engines. Either of those is easy to spot from far away.
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Re:Boeing 737 Max to Resume Flying U.S. Passengers Today by jerbs on Tuesday December 29, 2020 @12:52PM (#25572518)
The CFM 56 on the 737 (NG or Classic) also has a flat bottom. E.g., [1] shows a 737-800 with an engine with a flat bottom, and [2] shows a 737-300 with an engine with a flat bottom.

[1] https://commons.wikimedia.org/wiki/File:CFM_56_Lauda_737.jpg [2] https://commons.wikimedia.org/wiki/File:Classic_Colors_South...

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Re:Boeing 737 Max to Resume Flying U.S. Passengers Today by AnimalMuppet on Tuesday December 29, 2020 @12:41PM (#25572373)
I don't think that's right. Didn't several generations of 737 before MAX have that flattened engine bottom? I think I've been seeing it for considerably longer than MAX has been around.
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Re:Boeing 737 Max to Resume Flying U.S. Passengers Today by tyingq on Tuesday December 29, 2020 @12:49PM (#25572470)
Ah, yes, searching a bit, you appear to be right about the flat bottom. I believe the sawtooth edge is still correct though.
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Re:Boeing 737 Max to Resume Flying U.S. Passengers Today by rawgabbit on Tuesday December 29, 2020 @05:31PM (#25575866)
The sawtooth is called a "chevron" and is designed to reduce engine noise to meet FAA standards.
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