for FSX and FS2004
add folder to airplanes/747-400 folder

add following to aircraft.cfg

[fltsim.x]
title=Boeing 747-400 Pan Am
sim=Boeing747-400
model=
panel=
sound=
texture=clipper
kb_checklists=Boeing747-400_check
kb_reference=Boeing747-400_ref
atc_id=N747I
atc_airline=Mothball
atc_flight_number=1123
atc_heavy=1
ui_manufacturer="Boeing"
ui_type="747-400"
ui_variation="Pan American Airlines"
ui_typerole="Commercial Airliner"
ui_createdby="Microsoft Corporation"
description="1970 Working closely with Boeing, Pan Am develop a whole new aircraft, Boeing 747."