Terms in this set (67)

Ref. 3-3 AC-130, 3-1 AC-130

Factors to consider when deciding how far ahead or behind a convoy to search include other traffic in the area, size and speed of the convoy, and operating environment. Crews should watch for suspicious actions such as pulling to the side of the road or vehicles turning to follow the convoy. the speed of the convoy will have a dramatic effect on lead distances. Although 1,000m may be adequate for slow moving convoys, convoys traveling at 50 or 60mph require much greater lead distances. Search 1km ahead for each 10mph. (consider the maximum speed the enemy could travel [e.g., 70mph on a highway vs. 35mph on a winding dirt road]). In an example using a 30mm round with 7sec TOF from 12,000 foot slate range, if the AC-130 identified an enemy vehicle 1km from friendlies, and friendly and enemy vehicles are moving towards each other at 10mph (20mph closure rate), the AC-130 has 90secs to PID and expend ordnance or the target will be inside danger close. (20mph closure for 1km = 111secs till co-located, 100m/11secs for danger = 100 seconds till enemy is at danger close, 7secs TOF = approx 90secs). In urban areas, scanning distances will decrease, and attacks from the side are more likely than the front or rear. If a mobile enemy threat is sighted while the gunship is out of position to shoot (and little time remains to establish a firing orbit overhead the enemy), consider stopping the friendly force and putting a curtain of suppressive fire between the enemy and the friendlies.