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Aerial Applicator's Manual Aerial Applicator’s MANUAL A NATIONAL PESTICIDE APPLICATOR CERTIFICATION STUDY GUIDE Aerial Applicator’s Manual A NATIONAL PESTICIDE APPLICATOR CERTIFICATION STUDY GUIDE Written By Patrick J. O’Connor-Marer, PhD Published by the National Association of State Departments of Agriculture Research Foundation This publication was developed under Cooperative Agreement No. X8-83235401 awarded by the U.S. Environmental Protection Agency to the National Association of State Departments of Agriculture Research Foundation. EPA made comments and suggestions on the document intended to improve the scientific analysis and technical accuracy of the document. However, the views expressed in this document are those of its authors and EPA does not endorse any products or commercial services mentioned in this publication. ii ACKNOWLEDGMENTS This manual was produced thanks to the support of the National Association of State Departments of Agriculture Research Foundation and the U.S. Environmental Protection Agency, Office of Pesticide Programs. The following people generously gave their time and contributed their expertise by serving on a Technical Advisory Committee and reviewing and contributing to the manual. Ron Cline, Central Valley Helicopters, Ellensburg, Washington Adolfo Gallo, California Department of Pesticide Regulation, Sacramento, California Paul Liemandt, Minnesota Department of Agriculture, Pesticides, St. Paul, Minnesota Drew Martin, Purdue University, West Lafayette, Indiana Glenn Martin, Helicopter Applicators Inc., Gettysburg, Pennsylvania Scott Schertz, Schertz Aerial Service Inc., Hudson, Illinois Russell Stocker, Bob’s Flying Service, Davis, California Dennie Stokes, Stokes Flying Service, Parkin, Arkansas Dale Thomas, Thomas Helicopters, Inc., Gooding, Idaho Mike Thompson, Arkansas State Plant Board, Little Rock, Arkansas Michael Weaver, Virginia Tech, Blacksburg, Virginia Robert Wolf, Kansas State University, Manhatttan, Kansas The following individuals served as ad hoc members of the Technical Advisory Committee and contributed valuable information and made meetings with the committee possible. Kenneth Degg, National Agricultural Aviation Association, Hillsboro, Illinois Richard Herrett, National Association of State Deptartments of Agriculture, Washington, DC Carol Parker, U.S. Environmental Protection Agency, Washington, DC Carolyn Schroeder, U.S. Environmental Protection Agency, Washington, DC Mike Walsh, U.S. Environmental Protection Agency, Washington, DC Several individuals and organizations generously provided photographs used in this manual. Dennis Gardisser, WRK of Arkansas, Lonoke, AR Tom Hoffmann, Washington State Department of Agriculture, Moses Lake, WA Glenn Martin, Helicopter Applicators Inc., Gettysburg, Pennsylvania John Mateski, Western Helicopter Services, Newberg, OR Dale Thomas, Thomas Helicopters, Inc., Gooding, Idaho Michael Weaver, Virginia Tech, Blacksburg, Virginia Robert Wolf, Kansas State University, Manhattan, Kansas California Agricultural Aircraft Association Minnesota Department of Agriculture U.S. Department of Agriculture, Agricultural Research Service, Image Library A special thank you to the following people who provided careful reviews, helpful suggestions, and additional information. Scott Bretthauer, University of Illinois, Urbana, Illinois Joseph Spitzmueller, Minnesota Department of Agriculture, St. Paul, Minnesota ACKNOWLEDGMENTS iii iv CONTENTS ACKNOWLEDGMENTS .................................... iii CONTENTS ............................................. v INTRODUCTION ......................................... 1 The National Examination ................................ 2 Scope of this Manual .................................... 2 How to Use this Manual ................................ 2 Detailed Content Outline ................................. 3 CHAPTER 1 LaWS anD REGULATIONS FOR THE AERIAL AppLICATOR PILOT .......................... 9 Requirements for Pilot Certification ........................ 10 EPA Requirements ................................... 10 The Pesticide Label .................................... 12 Review Questions ...................................... 15 CHAPTER 2 OpERATION anD AppLICATION SaFETY ....... 17 Aircraft and Pesticide Security ............................ 18 Evaluating Aerial Application Operation Security .............. 18 Timely Coordination with Authorities ...................... 19 Protecting People and the Environment ..................... 19 Employee Training ................................... 20 Employee Habits .................................... 21 Application Safety...................................... 22 The Equipment ..................................... 22 Understanding the Work Order .......................... 23 Scouting the Target Site ............................... 25 Understanding Pesticide Label Restrictions .................. 25 Resolving Conflicts ................................... 27 Reviewing and Documenting the Application ................. 27 Planning for Emergencies ................................ 28 Emergency Information ................................ 28 Flight Hazards ...................................... 28 Plans in Case of Aircraft Crash ........................... 29 Application Equipment Malfunction ....................... 29 Ground Crew Emergencies.............................. 29 Overspray, Drift, and Other Misapplication .................. 29 Spray or Dust Contacting Bystanders or Vehicles............... 30 iv CONTENTS v Communications ...................................... 30 Review Questions ..................................... 31 CHAPTER 3 PREVENTING PESTICIDE DRIFT ............... 33 Factors that Contribute to Drift ........................... 34 Classification of Droplet Size ............................ 35 Spray Mixture Physical Properties ........................ 36 External Factors Affecting Droplet Size and Drift .............. 37 Minimizing Off-Target Drift ............................. 39 Application Techniques ................................ 40 Smoke Generators .................................... 40 Review Questions ..................................... 41 CHAPTER 4 AERIAL PESTICIDE DISPERSAL SYSTEMS ...... 43 Dispersal System Requirements ........................... 43 Equipment and Component Factors ....................... 44 Liquid Dispersal System Components ....................... 44 Spray Pumps ....................................... 44 Pesticide Tanks and Hoppers ............................ 45 Filters and Screens ................................... 46 Pipes, Hoses, and Fittings .............................. 46 Spray Booms ....................................... 47 Flow Meters, Valves, and Pressure Gauges ................... 48 Nozzles ........................................... 49 Nozzle Anti-Drip Devices .............................. 52 Electronics ........................................... 52 GPS Systems ....................................... 52 Computers ......................................... 53 Flow Volume Controllers ............................... 53 Mapping Systems .................................... 54 Positioning Booms and Nozzles ........................... 54 Nozzle Adjustments .................................. 54 Pattern Testing a Spray Boom............................ 55 Spraying System Operating Pressure ....................... 57 Dry Material Spreaders ................................. 57 Ram-Air Spreader .................................... 58 Centrifugal Spreader .................................. 60 Review Questions ...................................... 61 CHAPTER 5 CaLIBRATIng AERIAL AppLICATION EQUIPMENT 63 Why You Need to Calibrate Equipment ..................... 64 Improper Application Rate .............................. 64 Equipment Calibration Methods ........................... 65 Calibrating Liquid Sprayers ............................. 65 Calculating Sprayer Flow Volume per Mile (Rotary-Wing Aircraft)... 67 Calculating Sprayer Flow Volume per Mile (Fixed-Wing Aircraft) ... 68 Calculating Acres Treated per Minute ...................... 69 Determining Gallons per Acre........................... 70 Determining the Amount of Pesticide to Put Into the Tank ......... 70 Calculating the Area of a Rectangular or Square Application Site .... 71 vi CONTENTS Calculating the Area of a Triangular Application Site ............ 72 Calculating the Area of a Circular Application Site.............. 73 Calculating the Area of an Irregularly-Shaped Application Site ...... 74 Calibrating Granule Applicators .......................... 75 Computing Granule Application Rate per Acre ................ 76 Review Questions ..................................... 79 CHAPTER 6 MaKIng an AERIAL PESTICIDE AppLICATION .. 81 Ferrying ............................................ 82 Checking the Application Site ............................. 82 What to Watch for During an Application .................... 83 Monitor Changes .................................... 83 Importance of Onsite Ground Crew During an Application ....... 84 Pilot Checklist........................................ 85 Ground Crew Checklist ................................. 86 Application Methods ................................... 86 Application Speed .................................... 87 Altitude ........................................... 87 Obstructions ....................................... 87 Flight Patterns ........................................ 88 The Turnaround ....................................
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