The Bogert Group (www.bogert-av.com) for image used in Chapter 13 W. B. Graham, Welded Tube Pros LLC (www.thefabricator.com) for image used in Chapter 13 Zinko Hydraulic Jack (www.zinkojack.com) for image used in Chapter 13 Aviation Institute of Maintenance (www.aimschool.com) for image used in Chapter 14 Aviation Laboratories (www.avlab.com) for image used in Chapter 14 AVSIM (www.avsim.com) for image used in Chapter 14 Eggenfellner (www.eggenfellneraircraft.com) for image used in Chapter 14 FlightSim.Com, Inc. (www.flightsim.com) for image used in Chapter 14 Fluid Components International LLC (www.fluidcomponents.com) for image used in Chapter 14 Fuel Quality Services, Inc. (www.fqsinc.com) for image used in Chapter 14 Hammonds Fuel Additives, Inc. (www.biobor.com) for image used in Chapter 14  Jeppesen (www.jeppesen.com) for image used in Chapter 14 MGL Avionics (www.mglavionics.com) for image used in Chapter 14 Mid-Atlantic Air Museum (www.maam.org) for image used in Chapter 14 MISCO Refractometer (www.misco.com) for image used in Chapter 14 Mr. Gary Brossett via the Aircraft Engine Historical Society (www.enginehistory.org) for image used in Chapter 14 Mr. Jeff McCombs (www.heyeng.com) for image used in Chapter 14 NASA for image used in Chapter 14 On-Track Aviation Limited (www.ontrackaviation.com) for image used in Chapter 14 Stewart Systems for image used in Chapter 14 Prist Aerospace Products (www.pristaerospace.com) for image used in Chapter 14 The Sundowners, Inc. (www.sdpleecounty.org) for image used in Chapter 14 Velcon Filters, LLC (www.velcon.com) for image used in Chapter 14 Aerox Aviation Oxygen Systems, Inc. (www.aerox.com) for image used in Chapter 16 Biggles Software (www.biggles-software.com) for image used in Chapter 16 C&D Associates, Inc. (www.aircraftheater.com) for image used in Chapter 16 Cobham (Carleton Technologies Inc.) (www.cobham.com) for image used in Chapter 16 Cool Africa (www.coolafrica.co.za) for image used in Chapter 16 Cumulus Soaring, Inc. (www.cumulus-soaring.com) for image used in Chapter 16 Essex Cryogenics of Missouri, Inc. (www.essexind.com) for image used in Chapter 16 Flightline AC, Inc. (www.flightlineac.com) for image used in Chapter 16 IDQ Holdings (www.idqusa.com) for image used in Chapter 16 Manchester Tank & Equipment (www.mantank.com) for image used in Chapter 16 Mountain High E&S Co. (www.MHoxygen.com) for images used throughout Chapter 16 Mr. Bill Sherwood (www.billzilla.org) for image used in Chapter 16 Mr. Boris Comazzi (www.flightgear.ch) for image used in Chapter 16 Mr. Chris Rudge (www.warbirdsite.com) for image used in Chapter 16 Mr. Richard Pfiffner (www.craggyaero.com) for image used in Chapter 16 Mr. Stephen Sweet (www.stephensweet.com) for image used in Chapter 16   XII