Power in AC circuits ................................................9-20 Resistance.................................................................9-12 True power ...............................................................9-20 Optical considerations..................................................7-54 Orange peel ..................................................................8-14 Other aircraft inspection and maintenance  programs ......................................................................2-65 Outside the member .....................................................4-99 Oven.............................................................................7-22 Overhead position welding ..........................................5-29 Oxidizing flame ...........................................................5-13 Oxy-acetylene cutting ..................................................5-14 Oxy-acetylene welding of ferrous metals ....................5-16 Oxy-acetylene welding of nonferrous metals ..............5-17 Oxygen...........................................................................5-7 Paint booth .....................................................................8-6 Paint finishes................................................................8-19 Paint system compatibility...........................................8-19 Paint touchup ...............................................................8-19 Paper decals .................................................................8-18 Parasite drag...................................................................2-8 Paste adhesives...............................................................7-9 Patches .........................................................................4-97 Patch installation on the aircraft ..................................7-42 Peel ply.........................................................................7-21 Pens ................................................................................4-4 Perforated release film .................................................7-21 Periodic maintenance inspections ................................2-60 Phenolic resin.................................................................7-7 Piccolo former..............................................................4-26 Pin fastening systems (high-shear fasteners) ...............4-50 Pinholes........................................................................8-14 Pinked edge....................................................................3-3 Pitting...........................................................................4-91 Plasma arc cutting ..........................................................5-7 Plasma arc welding ........................................................5-6 Plastic media blasting (PMB) ......................................8-21 Plug patch.....................................................................6-21 Ply ..................................................................................3-3 Ply orientation warp clock ...........................................7-29 Plywood skin repairs....................................................6-20 Pneumatic circular cutting saw ......................................4-8 Pneumatic drill motors.................................................4-15 Pneumatic rivet gun .....................................................4-37 Polishing ......................................................................7-57 Polybenzimidazoles (PBI) .............................................7-8 Polyester fabric repairs ................................................3-23 Polyester resins ..............................................................7-7 Polyether ether ketone (PEEK)......................................7-8 Radiography.................................................................7-18 Radius dimpling ...........................................................4-43 Radome repairs ............................................................7-41 Reamers........................................................................4-19 Rebalancing methods ...................................................2-38 Rebalancing procedures ...............................................2-38 Reciprocating engine ...................................................2-34 Reciprocating saw..........................................................4-8 Red Baron’s Fokker DR-1 .............................................1-4 Red iron oxide................................................................8-3 Regulators ....................................................................5-10 Reinforcing tape.............................................................3-5 Relays...........................................................................9-99 Release agents..............................................................7-21 Relief hole location ......................................................4-73 Removal of decals........................................................8-19 Polyimides......................................................................7-7 Polyurethane ..................................................................8-5 Poor adhesion...............................................................8-13 Pop rivets .....................................................................4-56 Portable power drills ....................................................4-15 Power factor .................................................................9-20 Powerplant ......................................................... 1-42, 2-34 Powerplant stations ......................................................1-39 Power systems..............................................................9-41 Power tools...................................................................4-37 Preflight........................................................................2-60 Pre-impregnated products (prepregs).............................7-8 Preparation of wood for gluing ....................................6-11 Preparing glues for use.................................................6-11 Prepreg .........................................................................7-27 Press brake ...................................................................4-23 Pressing or clamping time............................................6-11 Pressure ..........................................................................2-2 Pressure on the joint.....................................................6-12 Pressure regulators .........................................................5-7 Pressurization...............................................................1-10 Primary flight controls .................................................2-11 Primary flight control surfaces.....................................1-24 Primer.............................................................................3-7 Primer and paint...........................................................8-10 Primers ...........................................................................8-3 Profile drag.....................................................................2-8 Progressive inspection .................................................2-60 Protective equipment for personnel .............................8-22 Puddle ..........................................................................5-15 Pull-type blind bolt ......................................................4-54 Pulse echo ultrasonic inspection ..................................7-18 Punches ..........................................................................4-5 R P  I-8