b. Category 3 is less serious than Category 1 or 2. There is more flexibility in the reporting
time and procedures. Category 3 has two options for notifying DA. The first option is to send HQDA a
letter in message format (SIR) within three days. The second option is to send an electronic message
(SIR) within seven days.
c. The categories of serious incidents include many events. However, not all serious incidents
are reported by SIRs. These incidents are reported through other channels and include nuclear reactor
mishaps, incidents involving foreign students, and civil authority request for military support during
Format of SIR.
a. DD Form 173/1 for an SIR has a specific format which calls for a complete picture of the
incident. Refer to Figures 4-1 to 4-4, a sample DD Form 173/1 for an SIR.
b. Subject. The subject is the SIR number. The SIR number is a six-digit number assigned by
the reporting command or activity. The first two digits are the last two digits of the calendar year of the
report. For example, an SIR reported in 1987 would have 87 as the first two digits of the Report
Number. The last four digits are the sequential numbers assigned for the calendar year. In our sample
SIR, the Report Number is the 324th report in 19XX.
c. In Figure 4-1, the word "Surname" is typed in after the report number. The word "Surname"
is used for incidents which involve a commissioned or warrant officer, or a civilian GS-7 or above, as
suspect or subject. "Surname" is also used for incidents which are so sensitive they justify selective
d. Information is reported on numbered lines in the body of the message. The line numbers and
the information contained in each is as follows:
(1) Number 1 - Category of Incident. Category 1, 2, or 3 is listed. What is the Category
Number in Figure 4-1?
(2) Number 2 - This is the type of incident and the Offense Code. The list of Offense Codes
used by the Army is in Table 4-2 of AR 190-45. This is the same Offense Code which is used on DA
Form 3975, Block 7. An extract of AR 190-45 can be found at the end of this subcourse.
e. Codes will not be used to determine if a serious incident is to be reported. If multiple
incidents are reported, list them in the order of seriousness. Note the Offense Code in parentheses after
For instance, look at Line 2 of the sample SIR in Figure 4-1. Check the Offense Code shown against the
extract from AR 190-45, Appendix D (D15-D19). Is the Offense Code correct? No, the proper code is