INTERCEPT PROCEDURES TEXTBOOK
Elevation is reported in degrees HIGH or LOW from the fighter. For example, if the bogey
contact were 2 degrees high at a range of ten miles, the elevation portion of the AREO report
would be "2 high." When there is no altitude or elevation scale differential, the bogey is
After automatic radar track has been established, rate of closure (ROC) information is
presented on the scope in knots. Overtake is always true airspeed and not indicated airspeed.
Since closure is difficult to estimate when operating in the search mode, it is acceptable to use
"closing" or "opening" in the AREO report in this case.
Positive ROC means the fighter is closing on the bogey. Overtake will be reported using
knots read from the scope; for example, "400" means 400 knots of overtake. The words "knots"
and "overtake" are omitted.
When the overtake is negative it will be reported as opening; for example, "100 opening." In
the case of 100 knots closure, it will be reported as "100 opening", since opening is a deviation
from the norm.
At long range, when sufficient time is available, the AREO report will be given as a complete
four-part report. At medium and short ranges, when task loading increases, it may be
abbreviated to azimuth, range and elevation (ARE).
In the busier phases of an intercept, there is a tendency to report azimuth and range but
neglect elevation information. Any such tendency should be avoided because it fails to keep the
aircrew informed of significant tactical information.
Additions to AREO Reports
It is correct and important for the weapons officer to announce bogey tendencies as they
occur, as well as remain cognizant of the attitude of the fighter. Bogey drift patterns and any
movement of the bogey not caused by the fighter should be noted. Some examples of
supplementary information worthy of mention, in addition to the standard AREO call, are listed
(1) It is always significant when the bogey shows drift and should be reported as "Bogey
(2) When the bogey is not drifting, it may be reported as "Bogey holding (degrees)
left/right". In this case it may be further noted that "Bogey is on collision."