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Breaking sound barrier

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  • Breaking sound barrier

    AT 12:11 am this morning a Lufthansa A380 (lh441) (iah - fra) was flying at 725mph at an altitude of 37000 feet. Was it exceeding mach 1. It was over the Atlantic Ocean at the time.

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  • #2
    About 30mph short for mach1..

    768mph
    Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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    • #3
      I though 768 was at ground level according to what I've read. Doesn't it reduce at altitude increases?

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      • #4
        The reported speed from ADSB is relative ground speed.
        https://www.faa.gov/nextgen/programs/adsb/faq/

        ADS-B does not report vertical or horizontal airspeed. Instead, ADS-B reports horizontal and vertical velocity relative to the Earth. This velocity is useful for air traffic control functions and ADS-B applications. Airspeed can be provided by other aircraft sensors.
        Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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        • #5
          Thanks. .944 mach is pretty impressive for such a huge aircraft.

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          • #6
            So I believe, no matter the alt. unless that ticks over and the plane gets super stressed by a sonic boom. It'd have been close. But not breaking.
            Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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