MART Vol. II MO/MP - NESA - Civil Air Patrol

Note: The turns in the example above will take the aircraft out of the grid northand south; make sure no other aircraft are assigned to the grids north or south ofyours. If aircraft are assigned to adjacent grids, make sure you complete yourturns inside your grid.GX-55All the data you need set up this search pattern in the GX50/55 is on theworksheet:• Type of Grid and Sectional (US grid, STL).• Type of pattern (Parallel Line).• Grid (104D2, where '2' indicates entering the northeast corner of Dquadrant *).• Spacing (1 nm).• Direction of Travel (N/S).* The GX-55 identifies the corners of quadrants by numbers: 1 = enter the NWcorner; 2 = NE corner; 3 = SE corner; and 4 = SW corner. In our example youwould enter "104D2."Note: If you wish, record this data separately (e.g., a list or table) to make iteven easier to enter into the GX-55. The example, above, and the otherexamples that follow are listed in the sequence that you enter them into theGX-55.8.4 Creeping line searchThe creeping line search pattern is similar to the parallel patterns. Theparallel pattern search legs are aligned with the major, or longer, axis of therectangular search areas, whereas the search legs of the creeping line pattern arealigned with the minor or shorter axis of rectangular search areas. Figure 8-4shows the layout of this search pattern, as used to search along the extendedcenterline of an airport. The planner uses the creeping line pattern when:• The search area is narrow, long, and fairly level.• The probable location of the target is thought to be on either side of thesearch track within two points.• There is a need for immediate coverage of one end of the search area.142