BY ORDER OF THE COMMANDER
AIR FORCE MATERIEL COMMAND
AIR FORCE MATERIEL COMMAND
INSTRUCTION 21-105
6 FEBRUARY 2023
Maintenance
CORROSION PROGRAM AND
MARKING OF AEROSPACE
EQUIPMENT
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY
ACCESSIBILITY: Publications and forms are available for downloading or ordering on the e-
Publishing web site at http://www.e-publishing.af.mil/.
RELEASABILITY: There are no releasability restrictions on this publication.
OPR: HQ AFMC/A4MY Certified by: HQ AFMC/A4M
(Col Jennifer Barnard)
Supersedes: AFMCI 21-105, 20 February 2019 Pages: 30
This instruction implements policy guidance in AFPD 21-1, Maintenance of Military Materiel.
This instruction does not apply to the Air National Guard, Air Force Reserve, and Space Force and
their units. However, if an AFRC unit is assigned or associated with AFMC where AFMC is the
lead, this guidance would be applicable to the AFRC units. Note: All contractor requirements
contained within this AFMC Supplement must be contained within the contract/grant/agreement
to be enforceable. It provides policy and objectives and assigns responsibilities for implementing
and maintaining an effective Corrosion Prevention and Control Program for aerospace systems,
equipment, and components in AFMC. It specifies responsibilities performed at each level of
command and implements guidance presented in Air Force Occupational, Safety, and Health, 48
and 91 series instructions, Technical Orders (T.O.) 1-1-691, Cleaning and Corrosion Prevention
and Control, Aerospace and Non-Aerospace Equipment, 1-1-8, Application and Removal of
Organic Coatings, Aerospace and non-Aerospace Equipment and 1-1-689 series, Cleaning and
Corrosion Prevention Control, Volume I and III, lead command instructions, and the specific
aircraft –23 T.O.s. If a conflict exists between this instruction and the lead command instruction,
contact the OPR. This instruction also provides guidance for applying command approved non-
USAF standards and markings as authorized in T.O. 1-1-8 and the applicable aircraft or equipment
T.O. Ensure all records generated as a result of processes prescribed in this publication adhere to
AFI 33-322, Records Management and Information Governance Program, and are disposed in
accordance with the Air Force Records Disposition Schedule, which is located in the Air Force
Records Information Management System. This publication may be supplemented at any level,
but all direct Supplements must be routed to the OPR of this publication for coordination prior to
