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There are many examples where the PF will place the thrust levers at idle and the "retard" command will continue sounding. Here are some examples: 1 and 2. Note that I am not referring to the singular "retard" command that will sound between 20 and 10 ft regardless of the A/THR status or thrust lever position (here is an example of that).

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Simply because the callout always occurs at 20 ft radio height, regardless of the position of the levers. Therefore, idling the levers also does not interrupt the callout. The callout is only a reminder to the pilots, not an order according to the A320 Flight Crew Training Manual: enter image description here

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    $\begingroup$ But what determines how often your hear the RETARD callout? In the linked YouTube videos, you can hear it 5 times, 3 times and once respectively. $\endgroup$
    – Bianfable
    Oct 27, 2022 at 12:45
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    $\begingroup$ @Bianfable Probably the model of aircraft. Some aircraft only call it once. $\endgroup$
    – Machavity
    Oct 27, 2022 at 19:40
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    $\begingroup$ "Note that I am not referring to the singular 'retard' command that will sound between 20 and 10 ft regardless of the A/THR status or thrust lever position..." I believe that is what your answer is referring to. The question is why it will sound even after 20ft with the levers at idle (as seen in the videos). $\endgroup$ Oct 27, 2022 at 22:38
  • $\begingroup$ @CharlesNicholson I suspect the callout simply repeats because the levers in the videos you posted are not yet fully in the idle position. $\endgroup$ Jan 10, 2023 at 11:05
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    $\begingroup$ @stefanlinden Did you watch the videos? That's the main point of the question, they are at idle. This only seems to occur on the A320 (and not any other Airbus airplane). $\endgroup$ Jan 10, 2023 at 17:51

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