BY ORDER OF THE COMMANDER
AIR EDUCATION AND TRAINING
COMMAND
AIR EDUCATION AND TRAINING
COMMAND INSTRUCTION 21-109
07 FEBRUARY 2023
Maintenance
MAINTENANCE MANAGEMENT
TRAINER DEVELOPMENT
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY
ACCESSIBILITY: This publication is available for downloading or ordering on the e-
Publishing website at www.e-Publishing.af.mil.
RELEASABILITY: There are no releasability restrictions on this publication.
OPR: 19 AF/A4PP Certified by: 19 AF/A4
(Jay C. Hennette)
Supersedes: AETCI21-109, 16 July 2018 Pages: 29
This instruction implements Air Force Policy Directive 21-1, Maintenance of Military Materiel. It
establishes the maintenance management system for Air Education and Training Command
(AETC) trainer development activities. This instruction prescribes procedures and responsibilities
necessary to operate and obtain support from trainer development activities at Joint Base San
Antonio (JBSA) Randolph, TX; Keesler Air Force Base (AFB), MS; Kirtland AFB, NM; and
Sheppard AFB, TX. It applies to AETC Regular Air Force. This instruction does not apply to Air
National Guard, Air Force Reserve Command, or United States Space Force. Ensure all records
generated as a result of processes prescribed in this publication adhere to Air Force Instruction
(AFI) 33-322, Records Management and Information Governance Program, and are disposed in
accordance with (IAW) the Air Force Records Disposition Schedule (RDS), which is located in
the Air Force Records Information Management System. The authorities to waive wing, unit, delta
or garrison level requirements in this publication are identified with a Tier (“T-0, T-1, T-2, T-3”)
number following the compliance statement. See Department of the Air Force Manual (DAFMAN)
90-161, Publishing Processes and Procedures, for a description of the authorities associated with
the tier numbers. Submit requests for waivers on Department of the Air Force (DAF) Form 679,
Air Force Publication Compliance Item Waiver Request/Approval, through the chain of command
to the appropriate tier waiver authority, or alternately, to the publication Office of Primary
Responsibility (OPR) for non-tiered compliance items. Refer recommended changes and questions
about this publication to the OPR using the DAF Form 847, Recommendation for Change of
Publication; route DAF Forms 847 from the field through the appropriate functional chain of
command. All recommendations and requests must have the approval of the appropriate group
