ATP-3-09-30 Observed Fires Download
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Special Munitions 28 September 2017 ATP 3-09.30 6-7 BASE BURN ROUND 6-26. The M864 base burn DPICM has a larger dispersion pattern than that of the M438A1 DPICM despite having fewer grenades. However, because it is designed for employment at longer ranges, which produces a steep angle of fall, the dispersion pattern is typically circular. At its designed ranges, the dispersion pattern covers approximately 150 meters by 150 meters. ICM CALL FOR FIRE AND ADJUSTMENT 6-27. The ICM call for fire is the same as any call for fire. The observer identifies the type of ICM requesting to be fired in effect by referring to APICM as APICM and DPICM as ICM. Base burn DPICM is normally employed at ranges beyond the M438A1 DPICM, as determined by the FDC. Normal corrections for HE in adjustment apply; however, the fire for effect phase is entered once a 100 meter bracket is split. RANGE AND DEVIATION 6-28. Because of the size of the effects pattern, do not make deviation shifts of less than 50 meters and range corrections of less than 100 meters. HEIGHT OF BURST 6-29. Because of the reliability of the round, no adjustment for HOB is required before firing for effect. If a repeat of fire for effect is required, adjust the HOB. Adjust the HOB in increments of 50 meters. 6-30. If a large number of duds are observed or the effects pattern is too small, the observer should give an UP correction. This correction should not exceed 100 meters. DANGER CLOSE 6-31. When adjusting close in fires with ICM, the observer must start the adjustment at least 600 meters from friendly troops, depending on the relative locations of weapons, target, and friendly troops. Give special consideration to the direction and speed of the wind in the target area. Make adjustments with the entire battery. Make corrections from the edge of the effects pattern nearest to the target. SAMPLE ICM MISSIONS 6-32. Tables 6-7 through 6-9 (on page 6-8) provide sample ICM calls for fire. Table 6-7. Fire for effect with ICM Observer Fire Direction Center P51 THIS IS P87, FIRE FOR EFFECT, OVER. P87 THIS IS P51, FIRE FOR EFFECT, OUT. GRID NK372461 ALTITUDE 205, OVER. GRID NK372461 ALTITUDE 205, OUT. BMP PLATOON ASSEMBLY AREA, ICM, OVER. PLATOON ASSEMBLY AREA, ICM, OUT. Legend. BMP—Russian designed armored personnel carrier ICM—improved conventional munitions