Do a search on FlightSim.Com for this file: boeing_727-100_air_force_one.zip (I found it by doing a search there for B. Lechner).

Then add this to the 727-100 aircraft.cfg. :

[fltsim.XX]
title=CS 727-100 Captain - AIR FORCE ONE
sim=cs727100
model=
panel=
sound=
texture=AIRFORCEONE
kb_checklists=
kb_reference=
atc_id=
atc_airline=
atc_flight_number=0001
ui_manufacturer="Boeing"
ui_type="727-100"
ui_variation="AIR FORCE ONE"
ui_typerole="Commercial Airliner"
ui_createdby="Captain Sim"
description="727 Captain (727-100 Base Pack) v2.3\n(c) 2009 Captain Sim www.captainsim.com"
visual_damage=1

instead of what the readme tells you to do. Change [fltsim.XX] to the next available consecutive number. E.g. if the last entry in the aircraft.cfg is [fltsim.9] then make it [fltsim.10] (change XX to 10)

Mark