P-385-63 Range Safety Pamphlet Download
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outside Areas C and E. Altitude restrictions will be in accordance with paragraph a, above. Corridors will follow easily identifiable markers and routes. Flight control points will be established and aircrews briefed on flight navigation procedures. Maps of flight corridors (fig 10–7) will be made available at installation range operations (Army), range control (Marine Corps), facilities base operations, and other locations deemed appropriate by the installation RMA (Army), RCO (Marine Corps). c. Communications will be maintained among the designated aircraft, range operations firing desk (Army), range control (Marine Corps), and the firing unit on a common communications network. Aircraft will report entry and exit of specific vertical danger zones. This is not applicable to aircraft operating as part of tactical exercises with firing elements provided communication is maintained between participants. A communications failure with aircraft in a flight corridor requires an immediate cease-fire. These procedures will be established by local SOP. d. Aircraft operating within SDZs as part of an exercise will remain a minimum of 500 m from GTLs and outside of Areas C and E. e. Only ammunition certified for overhead fire will be used when aircraft are operating in or passing over SDZs. f. Uncontrolled flights within SDZs are not authorized. g. Computing the stay above (SA) and stay below (SB) distances (for feet AGL) you must — (1) Determine the GTL and the firing unit range to target. (2) Determine the munitions type and charge being fired. (3) Determine the vertical interval (VI) (VI=target altitude - firing unit altitude in meters). (4) Determine where the final attack heading (FAH) or cone crosses the GTL and the gun target range at those points. (5) Refer to the appropriate trajectory chart by munitions/charge and determine the arc corresponding to range to target. (6) Determine the altitude (in meters) corresponding to the ranges where the final attack cone crosses the GTL by tracing the arc to those ranges. (a) Highest altitude + VI=ALT 1. Multiply by 3.3 to convert to feet. (Note: if the final attack cone straddles the summit of the trajectory, use the Max Ord for ALT 1). (b) Lowest altitude + VI=ALT 1. Multiply by 3.3 to convert to feet. (7) Incorporate a 1000 foot buffer for all nonstandard conditions. (a) ALT 1 + 1,000 ft=SA (expressed to the next highest 100 ft AGL). (b) ALT 1 - 1,000 ft=SB (expressed safe to the next lowest 100 ft AGL). h. Computing the SA and SB distances (for feet MSL) you must— (1) Determine the range to target in meters. (2) Determine the projectile and charge trajectory. (3) Determine target altitude in meters. (4) Plot final attack heading from intersecting point 1 (IP 1) to intersecting point 2 (IP 2)) in degrees magnetic. (5) Determine where FAH intersects GTL at (IP 1) and (IP 2). (6) Determine chart ordinate in meters at (IP 1) and (IP 2). (7) Add target altitude to (IP 1) and (IP 2). (8) Convert to feet (IP1) X 3.3 and (IP2) X 3.3. (9) Add 1,000 ft to (IP 1) and subtract 1,000 ft from (IP 2). i. When computing stay above or stay below the general rule is that if the FAH straddles the Max Ord, compute SA and SB against the Max Ord + or - 1000 ft. 120 DA PAM 385–63 • 16 April 2014