External bonded repair with prepreg plies ...................7-41 External repair using precured laminate patches .........7-42 External repair using wet layup and double  Vacuum Debulk Method (DVD) .................................7-42 Eye protection ..............................................................7-53 Fabric cement....................................................... 3-7, 3-16 Fabric heat shrinking....................................................3-17 Fabric impregnation using a vacuum bag ....................7-30 Fabric impregnation with a brush or squeegee ............7-30 Fabric patch..................................................................6-20 Fabric sealer ...................................................................3-7 Fabric strength ...............................................................3-9 Fabric testing devices...................................................3-11 Fastener materials ........................................................7-46 Fasteners used with composite laminates ....................7-46 Fastener system for sandwich honeycomb  structures (SPS Technologies Comp Tite)...................7-46 Fenestron®...................................................................1-46 Fiber breakage..............................................................7-13 Fiber forms.....................................................................7-3 Fiberglass .......................................................................7-4 Fiberglass coverings.....................................................3-24 Fiberglass molded mat repairs .....................................7-40 Fiberlite ........................................................................7-48 Fiber orientation.............................................................7-2 Files..............................................................................4-13 Filler rod.......................................................................5-10 Fillers .............................................................................3-7 Fillet weld ....................................................................5-29 Film adhesives ...............................................................7-9 Finishing tapes .............................................................3-21 Fire protection..............................................................7-53 Fisheyes........................................................................8-15 Fixed-wing aircraft.........................................................1-5 Flag and pole................................................................2-31 Flange...........................................................................4-59 Flanged angles .............................................................4-76 Flap installation............................................................2-40 Flapping .......................................................................1-44 Flaps.............................................................................1-28 Fowler.......................................................................1-30 Split ..........................................................................1-30 Flap station...................................................................1-39 Flat ...............................................................................4-60 Flat position welding....................................................5-28 Flawed fastener holes...................................................7-14 Flight control surfaces..................................................1-24 Floats............................................................................4-99 Flush patch ...................................................................4-97 Flutter and vibration precautions .................................4-89 Fly-by-wire control ......................................................2-14 Foaming adhesives.......................................................7-10 Folding a box ...............................................................4-72 Folding sheet metal ......................................................4-58 Form block or die.........................................................4-80 Formed or extruded angles...........................................4-75 Former or bulkhead repair .........................................4-103 Forming By bumping ..............................................................4-79 Methods ....................................................................7-55 Procedures and techniques .......................................7-54 Process......................................................................4-57 Tools.........................................................................4-21 With an English Wheel.............................................4-26 Forms ...........................................................................7-55 Formula 1: bend allowance for a 90° bend ..................4-64 Formula 2: bend allowance for a 90° bend ..................4-64 Forward flight ..............................................................2-23 Freewheeling unit.........................................................2-36 Fresh air breathing systems............................................8-9 Friction-locked blind rivets..........................................4-48 Fully articulated rotor ..................................................2-18 Fully articulated rotor system ......................................1-44 Fuselage ............................................................... 1-8, 1-42 Fuselage stations ..........................................................1-39 Galling..........................................................................4-91 Gap-filling adhesive.....................................................6-10 Gap seals ......................................................................1-35 Gas cylinders................................................................5-10 Gas metal arc welding.......................................... 5-3, 5-22 Gas tungsten arc welding ...............................................5-3 Gas welding ...................................................................5-2 Gas welding and cutting equipment...............................5-7 Gas welding procedures...............................................5-15 Generator controls........................................................9-34 Functions of generator control systems....................9-35 Differential voltage ...............................................9-35 Overexcitation protection .....................................9-35 Overvoltage protection .........................................9-35 Parallel generator operations ................................9-35 Reverse current sensing ........................................9-35 Voltage regulation ................................................9-35 Generator controls for high output generators .........9-35 Generator controls for low-output generators ..........9-36 Carbon pile regulators...........................................9-36 Current limiter ......................................................9-37 Reverse-current relay............................................9-38 Three-unit regulators ............................................9-37 G F I-5