I H J K L  I-6 Voltage regulator ..................................................9-37 Theory of Generator Control....................................9-34 Glass fiber reinforced plastics......................................7-52 Glued joint inspection ....................................................6-4 Glue line.......................................................................6-10 Glues (adhesives) .........................................................6-10 Gouge...........................................................................4-91 Governor ......................................................................2-29 Gravity ...........................................................................2-7 Gravity-feed gun ............................................................8-7 Gray enamel undercoat ..................................................8-4 Greige.............................................................................3-3 Grinding wheels ...........................................................4-13 Grommets............................................................. 3-6, 3-21 Groove weld.................................................................5-28 Ground effect ...............................................................2-22 Gussets .........................................................................3-21 Gyroscopic forces ........................................................2-19 Hoses............................................................................5-11 Hot air system ..............................................................7-24 Hot dimpling ................................................................4-43 Hovering flight.............................................................2-20 Huck blind bolt system ................................................4-54 Humidity ........................................................................2-3 Absolute .....................................................................2-3 Relative.......................................................................2-3 Hydrogen........................................................................5-7 Hydromechanical control.............................................2-14 Hydropress forming .....................................................4-25 Impedance ....................................................................9-15 Inclusion.......................................................................4-91 Inductive circuits..........................................................9-98 Injector torch..................................................................5-9 Inspection.....................................................................4-50 Inspection for corrosion ...............................................4-93 Inspection of damage ...................................................4-90 Inspection of riveted joints...........................................4-92 Inspection openings ...................................................4-108 Inspection rings..............................................................3-6 Installation of high-shear fasteners ..............................4-50 Installation of rivets .....................................................4-33 Installation procedure...................................................4-52 Installation procedures .................................................7-57 Joggling........................................................................4-81 Junkers, Hugo ................................................................1-3 Keeping weight to a minimum.....................................4-89 Kett saw .........................................................................4-8 Kevlar®..........................................................................7-4 Hand cutting tools ........................................................4-13 Hand forming ...............................................................4-74 Handling of the torch ...................................................5-13 Hand-operated shrinker and stretcher ..........................4-27 Hand rivet set ...............................................................4-36 Hand tools .......................................................... 4-36, 7-19 Hardwood form blocks ................................................4-28 Heat blanket .................................................................7-24 Heat bonder..................................................................7-24 Heating.........................................................................7-54 Heat lamp .....................................................................7-24 Heat press forming.......................................................7-24 Heat sources .................................................................7-22 Helicopter power systems ............................................2-34 Helicopter structures ....................................................1-40 Helicopter vibration .....................................................2-31 Helium............................................................................5-7 Hex nut and wing nut temporary sheet fasteners .........4-30 High frequency vibration .............................................2-31 High rush-in circuits ....................................................9-98 High-speed aerodynamics............................................2-15 Hi-Lite® fastening system ...........................................4-51 Hi-Lok® and Huck-Spin® Lockbolt fasteners ............7-46 Hi-Lok® fastening system ...........................................4-51 Hi-Tigue® fastening system ........................................4-51 Hole drilling .................................................................4-14 Hole duplicator...............................................................4-7 Hole preparation................................................. 4-40, 4-56 Hole transfer.................................................................4-40 Honeycomb ..................................................................7-11 Horizontal stabilizer stations........................................1-39 Lacquers.........................................................................8-4 Laminated structures......................................................7-2 Landing gear ...................................................... 1-35, 1-36 Landing gear repairs ....................................................5-34 Lap joints .....................................................................5-32 Lap joint weld ..............................................................5-29 Lap or scab patch .........................................................4-97 Large coating containers ................................................8-7 Lateral stability ............................................................2-11 Layout method .............................................................4-73 Layout or flat pattern development..............................4-60 Layout tools ...................................................................4-4