P-385-63 Range Safety Pamphlet Download
Page 242 of 251
ammunition and or explosives (to include guided missiles and rockets) fired or launched from weapon systems. The direction of orientation is from the firing line or position toward the target. dud An explosive item or component of a weapon system that fails to function as intended when fired. eject only firing event A firing sequence where the launch motor of a missile functions, ejecting the missile out of the launcher, but the flight motor fails to ignite, causing the missile to tumble. As the missile tumbles and strikes the ground, sufficient G–Force initiates the warhead causing warhead particles to be projected outward. far edge The boundary of the impact area that borders the outside edge of Area B and is farthest from the firing point or position. field expedient explosive device A standard item of explosive that is combined with other standard explosive items or non-explosive items using techniques and procedures outlined in doctrinal publications (FMs and TMs). final safety acceptance inspection ACOMs, ASCCs, and DRUs safety inspection of new construction or modification of a range prior to release from the contractor or other contracting agent, Government or non-Government. firing lane The area within which a weapon system is fired. It consists of a start-fire line, cease fire-disarm line, and left and right limits of fire. firing line The line which consists of firing points or positions, from which weapon systems are fired downrange. firing position The point or location at which a weapon system (excluding demolitions) is placed for firing. For demolitions, the firing position is the point or location at which the firing crew is located during demolition operations. flak jacket Fragmentation body armor protective vest (CTA 50–900 update.) fork The change in angle of elevation necessary to produce a change to the center of impact equivalent to four probable errors. guided missile An unmanned vehicle moving above the surface of the earth whose trajectory or flight is capable of being altered by an external or internal mechanism. gun target line An imaginary line drawn between the firing position and target position. Also referred to as the line of fire. HC smoke Hexachloroethane-zinc oxide used to generate screening smoke. hangfire An undesired delay in the functioning of a firing system. A hangfire for a rocket occurs if the rocket propellant is ignited by the firing impulse but the rocket fails to exit the launcher within the expected time. hearing hazard, hearing hazard zone All personnel exposed to levels of 140 dBP and above must wear hearing protection. The area where the impulse noise levels are 140 dBP or higher and hearing protection is required. 230 DA PAM 385–63 • 16 April 2014