BY ORDER OF THE COMMANDER
AIR FORCE GLOBAL STRIKE COMMAND
AIR FORCE GLOBAL STRIKE
COMMAND INSTRUCTION 21-152
30 MARCH 2021
Maintenance
ENGINE TRENDING & DIAGNOSTIC
(ET&D) PROGRAM
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY
ACCESSIBILITY: Publications and forms are 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: AFGSC/A4M
Supersedes: AFGSCI21-152,
19 September 2017
Certified by: AFGSC/A4MQ
(Shane Lensgraf, Lt Col)
Pages: 7
This instruction implements AFPD 21-1, Managing Aerospace Equipment Maintenance. It
prescribes policies and procedures for monitoring jet engine internal performance and
supplements Air Force Global Strike Command (AFGSC) units’ responsibilities to include
program requirements IAW TO 00-25-257, Engine Health Management (EHM+) General
Information User’s Manual. This program applies to all AFGSC units, and is applicable to the
Air National Guard (ANG) and the Air Force Reserve Command (AFRC) Classic Associations.
Ensure that all records created as a result of processes prescribed in this publication are
maintained In Accordance With (IAW) AFI 33-322, Records Management and Information
Governance Program, and disposed of IAW Air Force Records Information Management System
(AFRIMS) Records Disposition Schedule (RDS). Send comments and suggested improvements
to this publication on AF Form 847, Recommendation for Change of Publication, to
AFGSC.A4M.Workflow@us.af.mil. The authorities to waive wing/unit level requirements in
this publication are identified with a tier number (“T-0, T-1, T-2, T-3”) following the compliance
statement. See Department of the Air Force Instruction (DAFI) 33-360 for a description of the
authorities associated with the Tier numbers. Submit requests for waivers through the chain of
command to the appropriate Tier waiver approval authority, or alternately, to the Publication
OPR for non-tiered compliance items, utilizing guidance identified in DAFI 33-360. This
publication may be supplemented at any level, but all supplements must be routed to the OPR of
this publication for coordination prior to certification and approval.
