Purpose and Background:
a. The Chairman, Joint Chiefs of Staff, has ordered the implementation of the Joint Airframe Condition Evaluation
(JACE) for the Tri-Service (Department of Defense (DoD)) Users of the H-60 derivative airframe The implementation
date of JACE has been set as 1 January 1997. A test to evaluate differences in technical criteria between the services,
will be conducted from 1 June 1996 through 1 October 1996.
b. The Joint Aircraft Condition Evaluation (JACE) criteria provides a method for the Tri-Service (Department of
Defense (DoD)) Users of the H-60 derivative airframe to identify candidates that require corrective depot level
maintenance action This method uses a set of common faults, called condition codes, to evaluate and make an effective,
objective assessment in determining the need for depot-level maintenance action This evaluation consists of an
assessment of the aircraft structure for symptoms of possible hidden defects, together with an assessment of overall
system material condition parameters.
c. These criteria replace the Airframe Condition Evaluation (ACE), as used previously in the U.S Army and Air
Force, and the Aircraft Service Period Adjustment (ASPA) criteria, as used previously by the U S. Navy.
d. The JACE pertains principally to depot level repairable structural parts However, any abnormal conditions and/or
defects observed will be recorded for disposition at the appropriate level of maintenance This evaluation does not pertain
to components or time change items, except as how they impact overall material condition.
e. The purpose of this Technical Bulletin is Two-Fold: (1) First, to designate the test aircraft, by unit, and describe
the JACE procedures.
(2) Second, provide field commanders a preview of how JACE procedures, when fully implemented, will differ
from the former systems.
f. For purposes of the test only, the "Unit Commander's Responsibility and Authority" (para. 8.b ) are included for
ADMINISTRATIVE PURPOSES ONLY, and are not binding until formal JACE implementation During the test period,
however, Commanders will be required to fully participate in the JACE Inbrief and Outbrief process, which will include
acknowledgment of JACE forms receipt.
Applicability: Tri-Service aircraft that are encompassed by this JACE Technical Bulletin include the following: