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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />2. Comparison with Previous Seasons <br />The tables of daily seeding operations shown in <br />Appendix A contain operating statistics which can be compared <br />with previous Muddy Road seasons. Table 2 is a summary of <br />operating logistics for the five seasons, 1975 through 1979. <br /> <br />The statistics presented in Tables 1 and 2 show a <br />40 to 50% increase in overall operational activity in 1978 and 1979 <br />when compared with the previous annual average. The addition of <br />IFR night-time coverage and the cloud-top seeding technique were <br />the two principle factors contributing to this increased activity. <br /> <br />D. Problem Areas <br /> <br />As judged by experts familiar with weather modification <br />field operations, overall equipment performance was better than <br />average in Muddy Road V. Even through there were no abnormal <br />equipment failures or excessive outages, it is deemed useful to <br />identify problems which interfered with the successful treatment <br />of threatening storms. <br /> <br />1. Seeder Aircraft <br />Aircraft related problems caused frequent inter- <br />ruptions to seeding operations. The most serious of these inter- <br />ruptions were due to fuel system and turbo-charger malfunctions <br />in one of the Aztecs. Avionics equipment also contributed to the <br />aircraft problems. <br /> <br />2. storm Recognition <br />The initial identification of storms with respect to <br />their having a hail threat continues to pose a problem. The main <br />problem being the recognition of a hail threat in sufficient time to <br />get seeder aircraft in position to cover the initial hail surge. <br /> <br />15 <br />