MIL-DTL-24784/19B (SH)
and briefly presented. The presentation shall cover such areas as the interface between system
maintenance and search radar maintenance that create mutual dependencies when maintenance
events are to be scheduled. The introduction shall explain the types of test procedures, manner of
monitoring tests, and use of test related fault directories. When a separate depot-level manual is
required (see 6.2), it shall include the information required by MIL-DTL-24784 and
MIL-DTL-24784/7.
3.6.7 Chapter 6 - System test synopsis. This chapter shall contain a synoptic description of each
system test. Each synopsis shall state the objectives of the test and list the significant parameters
and functions to be checked. The synopsis shall highlight major test indications and procedures to
provide test personnel with the background information necessary for understanding the test and
what it is to be achieved by a satisfactory conclusion of the test. The text shall correlate any
specific test methods and scope with operational requirements. Any limitation of a given test with
respect to assurance of complete operability of the functions involved shall be pointed out. They
shall describe briefly how the system shall be manned and what is expected of each participant for
efficient conduct of the test.
3.6.7.1 System test data usage. This portion of the manual shall contain and explain the
methods for determining and recording system performance on the basis of test results. For tests
whose results do not immediately indicate system performance as determined by engineering
analysis requirements, there shall be text and illustrations sufficient to permit data to be reduced,
analyzed, and evaluated. For test data requiring conversion into a form compatible with fleet
reporting requirements, the appropriate procedures shall be included and explained or referenced.
Procedures for evaluating tests and test scoring shall be supported by data sheets, charts, graphs,
and any other information needed to evaluate the test or perform data reduction. All procedures
that are needed for supervisory personnel shall be included. Figure 19-9 is an example of a typical
test data sheet used for data reduction. The left half of the sheet shall be used to enter observed
information. The right half shall be used for data reduction and shall contain information needed
for evaluation of data.
3.6.8 Chapter 7 - Introduction to fault-isolation. The introduction shall explain the concepts and
techniques underlying all the types of system fault-isolation material contained in the manual and
shall correlate their use with equipment-level troubleshooting diagrams. The introduction shall
describe each type of system fault-isolation material and shall provide a sample problem using
more than one type to isolate a fault. Legends or explanations of nonstandard symbols, line
coding, and block coding used on the diagrams shall be included. An alphabetical system
functional directory shall be included.
3.6.9 Chapter 8 - System fault-isolation. This chapter shall contain system fault-isolation
procedures, test, or logic diagrams (see MIL-DTL-24784) to provide rapid isolation of a system
fault to a specific functional area within an equipment. To facilitate solutions of problems
encountered during normal operation or system exercises other than scheduled testing, an
Indicator Fault Directory shall be provided. Fault-isolation procedures shall be generated for fault
indications that cannot easily be traced back to their source using functional diagrams. FLDs shall
be used for this purpose when feasible. In other situations, narrative text or a combination of
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