Jump to content

Sign in to follow this  
Guest Ian_Riddell

Radio Altitude Height Callouts

Recommended Posts

Guest Ian_Riddell

This logic behind the sounding of Rad Alt height callouts was a topic brought up and answered on the PPRuNe site, but I am still none the wiser...My old 747-400 notes mention that the RA height callouts are armed when the aircraft climbs above 1000' and each callout will only sound once below this height (not good if you're a bad flyer or flying over undulating ground). My notes also mention that the landing gear lever should be in the down position. However, there is no mention of this landing gear lever input in either the 767 or the 747-400 Boeing Maintenance Manuals. Also, considering the fact that there can be callouts programmed to sound above 1000', how do these fit into the 1000'/one time only/gear down logic? For example, there can be a 2500' callout. The landing gear may not be extended until below this height. Hopefully the experts here can tell me what really goes on in those mysterious (RA) black boxes? :-)Thanks. Cheers. Ian.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    2%
    $540.00 of $25,000.00 Donate Now
×
×
  • Create New...