To Install Make a Backup of your aircraft.cfg file then just copy and paste the below lines to your aircraft.cfg file

[fltsim.4]
title=Boeing 747-400 Paint4
sim=Boeing747-400
model=
panel=
sound=
texture=4
kb_checklists=Boeing747-400_check
kb_reference=Boeing747-400_ref
atc_id=N747P
atc_airline=Soar
atc_flight_number=1123
atc_heavy=1
ui_manufacturer=Boeing
ui_type="747-400"
ui_variation="Air Force One"
description="More than 30 years ago, the 747 made its first trip from New York to London.  Since then, it's become the standard by which other large passenger jets are judged. Its size, range, speed and capacity were then, and are now, the best in its class."