BY ORDER OF THE
SECRETARY OF THE AIR FORCE
AIR FORCE POLICY DIRECTIVE 90-20
18 APRIL 2019
Special Management
MISSION SUSTAINMENT
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY
ACCESSIBILITY: Publications and forms are available on the e-Publishing website at
www.e-Publishing.af.mil for downloading or ordering.
RELEASABILITY: There are no releasability restrictions on this publication.
OPR: SAF/IE
Supersedes: AFPD 90-20, 12 April 2012
Certified by: SAF/IE
(Mr. Richard Hartley)
Pages: 8
This publication implements Department of Defense Instruction (DoDI) 4715.24, The Readiness
and Environmental Protection Integration (REPI) Program and Encroachment Management and
is consistent with Department of Defense Directive (DoDD) 3020.40, Mission Assurance, DoDD
3200.15, Sustaining Access to the Live Training and Test Domain, DoDI 4180.02,
Implementation and Management of the DoD Mission Compatibility Evaluation Process, and
DoDI 4165.57, Air Installations Compatible Use Zones. This Air Force Policy Directive (AFPD)
sets mission sustainment policy and creates the necessary overarching structure that enables the
Air Force to successfully execute its Mission Sustainment Program. It applies to Department of
the Air Force personnel, to include civilian employees, members of the Regular Air Force, Air
Force Reserve, and Air National Guard, and to contractor support personnel when mandated by
the terms of a contract or other legally binding agreement. This directive may not be
supplemented.
Refer recommended changes and questions about this publication to the Office of Primary
Responsibility using Air Force Form 847 Recommendation for Change of Publication; route Air
Force Form 847 from the field through appropriate functional’s chain of command. Ensure that
all records created as a result of processes prescribed in this publication are maintained in
accordance with AFMAN 33-363, Management of Records, and disposed of in accordance with
the Air Force Records Disposition Schedule located in the Air Force Records Information
Management System.
