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IRS TTN?

Scheduled Pinned Locked Moved RJ Professional
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  • D Offline
    D Offline
    daan_vb
    wrote on last edited by daan_vb
    #1

    Hello,

    I read in the manual that you can see the time its going to take for IRS's to align but I can't seem to find it in the plane?

    The quote from the manual:

    The duration of the alignment process depends on aircraft latitude. It varies from 2.5 minutes at the equator to 15 minutes at latitudes greater than 70°. The time to completion of alignment is known as ‘time to NAV’ mode (TTN).

    TTN can be seen on the IRS sub-section of the NMS or FMS. TTN values greater than 7 minutes are shown as 7
    minutes. When alignment is complete, TTN will be shown as 0.0 and an IRS NAV READY message will be given.

    Where can I find this? Also what is the NMS?

    Thanks

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  • S Offline
    S Offline
    Spurious
    wrote on last edited by
    #2

    Yes, I've noticed this in the manual too; I spent far too long looking through pages in the FMS trying to find it. Error in the manual maybe?

    Maybe one for @Martyn , a time to IRS align counter in the EFB perhaps?

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  • MartynM Offline
    MartynM Offline
    Martyn JF Staff
    wrote on last edited by
    #3

    In the upcoming v1.1 update, tooltips have been added to the IRS MSU alignment knobs to show the seconds left until alignment.

    Martyn - Development Manager

    RhinozherousR 1 Reply Last reply
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  • RhinozherousR Offline
    RhinozherousR Offline
    Rhinozherous
    replied to Martyn on last edited by
    #4

    @Martyn Cool, thank you!

    1 Reply Last reply
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