Why don't voice radio communications use FM?

Emily writes:

They were misunderstood a) because people were stepping on other people
and b) because the KLM crew had heavy Dutch accents.

The reasons why they were misunderstood have never been ascertained,
and there are several possibilities. It's not even clear how much was
understood or misunderstood, since a number of the people involved are
dead. The common point to all the possible scenarios is misunderstood
radio communication.

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Mxsmanic wrote:
Emily writes:

They were misunderstood a) because people were stepping on other people
and b) because the KLM crew had heavy Dutch accents.

The reasons why they were misunderstood have never been ascertained,
and there are several possibilities. It's not even clear how much was
understood or misunderstood, since a number of the people involved are
dead. The common point to all the possible scenarios is misunderstood
radio communication.

Because of a heterodyne, NOT poor radio transmission quality. As
someone else already pointed out, FM doesn't even have this useful quality.

And yes, the official probable cause lists the heterodyne. I thought
you would have known that, seeing as you know allegedly read all these
accident reports.

(And since one full flight crew survived, that's pretty good eyewitness
account)

Emily writes:

And yes, the official probable cause lists the heterodyne.

No, it does not, at least not if you're thinking of the NTSB reports.
The probable causes a

- Pilot in command - failed to follow approved procedures, directives,
etc. (KLM)
- Pilot in command - failed to abort takeoff (KLM)

- Personnel - Miscellaneous-personnel: Pilot of other aircraft (Pan
Am)

The first report is DCA77RA014, the second is DCA77RA014. For the KLM
flight, the probable-cause report also lists "Pilot in command -
misunderstanding of orders or instructions" as a factor.

I thought you would have known that, seeing as you know allegedly
read all these accident reports.

You can read them yourself with the NTSB IDs above.

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Mxsmanic wrote:
Emily writes:

And yes, the official probable cause lists the heterodyne.

No, it does not, at least not if you're thinking of the NTSB reports.
The probable causes a

- Pilot in command - failed to follow approved procedures, directives,
etc. (KLM)
- Pilot in command - failed to abort takeoff (KLM)

- Personnel - Miscellaneous-personnel: Pilot of other aircraft (Pan
Am)

The first report is DCA77RA014, the second is DCA77RA014. For the KLM
flight, the probable-cause report also lists "Pilot in command -
misunderstanding of orders or instructions" as a factor.

I thought you would have known that, seeing as you know allegedly
read all these accident reports.

You can read them yourself with the NTSB IDs above.


I wasn't reading the NTSB report.

Emily writes:

I wasn't reading the NTSB report.

It might not hurt to read the reports now, before criticizing anyone
else for not doing research.

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Mxsmanic wrote:
Emily writes:

I wasn't reading the NTSB report.

It might not hurt to read the reports now, before criticizing anyone
else for not doing research.

The difference is, I never said I'd read it. YOU did.

Emily writes:

The difference is, I never said I'd read it. YOU did.

A key to progress in debate is knowing what you are talking about.
What you actually say about what you know is irrelevant.

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