Chapter 4Equipment and Personnel Limitations All crew members have a definite role to play in the TEWS mission, but the navigator has an especially critical and extremely busy function. His grasp of the mission, proficiency in plotting, judging lines of position, and determining fix radii are lines on a 1:250,00 chart. The lack of standardization among the navigators in the three TEWS in determining fix radii has been a persistant problem. As will be shown in Chapter V, the ground commander's reactions to fix reports are more prompt when fixes of 500 meters or less radii proposed to them. (Editors Note: the word proposed is a guestamate, the word was obliterated and unreadable.) Supervisory personnel have set 250 meters as the minimum reportable fix raduis because of equipment and chart limitations. The individual navigator has to judge the effect of driftmenter error, Doppler errors, standoff range, altitude, weather, and terrain in the fix. One 460th TRW study in Feburary 1968, showed that the navigators of the 362nd TEWS reported 48 percent of their fixes with a radii of 2,000 meters or over. The 36oth TEWS and the 361st TEWS navigators reported only 10 percent and 17 percent of their fixes at 2,000 meters. This problem had been alleviated somewhat through a renewed stardization emphasis. In the last analysis, as standardization representatives pointed out, the individual navigator still would have to make his own best judgment on the meaning of his fix data.
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