Hello everybody I have pmdg 777 ,I recently noticed when I put EGLL London Heathrow airport either in origin or destination I get this massage (LN:130 Error AT -999)

I really appreciate your professional prompt response

Ashraf Nakity

See this:

http://forum.avsim.net/topic/432684-pmdg-fmc-eerror-err-at-999-ln130/

Download new revision from Navigraph,it sorted it for me.

I think the new download is either rev 2 or rev 3..