| ZUNIGA LOGISTICS LTD | | | aviation safety violation | 2013 | $7,000 |
| ZOTOS INTERNATIONAL | Henkel | household and personal care products | aviation safety violation | 2014 | $8,500 |
| ZODIAC SERVICES AMERICAS LLC | | | aviation safety violation | 2009 | $25,000 |
| ZIP AVIATION LLC | | | aviation safety violation | 2021 | $7,000 |
| ZION HELICOPTERS LLC | | | aviation safety violation | 2021 | $8,000 |
| ZION HELICOPTERS LLC | | | aviation safety violation | 2023 | $8,000 |
| ZESTRON CORPORATION | | | aviation safety violation | 2012 | $16,000 |
| ZERMAT INTERNATIONAL | | | aviation safety violation | 2015 | $10,000 |
| ZANTOP INTERNATIONAL AIRLINES INC | | | aviation safety violation | 2001 | $22,000 |
| Z.ONE CONCEPT USA, INC. | | | aviation safety violation | 2012 | $14,000 |
| YULISTA AVIATION | | | aviation safety violation | 2011 | $5,500 |
| YUKON KUSKOKWIM HEALTH CORP | | | aviation safety violation | 2017 | $27,000 |
| YOUNG LIVING ESSENTIAL OILS | | | aviation safety violation | 2013 | $13,500 |
| YKK AP AMERICA, INC. | | | aviation safety violation | 2013 | $15,000 |
| Y2K AVIATION LLC | | | aviation safety violation | 2011 | $13,000 |
| XTRA AEROSPACE LLC | | | aviation safety violation | 2019 | $8,750 |
| XN AIR LLC | | | aviation safety violation | 2010 | $19,560 |
| XENO ENERGY CO LTD | | | aviation safety violation | 2010 | $5,500 |
| X-CHEM, LLC | | | aviation safety violation | 2015 | $45,000 |
| X GEN PRODUCTS | | | aviation safety violation | 2016 | $8,500 |
| WYOMING AIR CORPORATION | | | aviation safety violation | 2007 | $7,500 |
| WORTEX INTERNATIONAL | | | aviation safety violation | 2015 | $5,000 |
| WORLDWIDE BATTERY | | | aviation safety violation | 2017 | $31,500 |
| WORLDWIDE ACCESSORIES SERVICE INC | | | aviation safety violation | 2012 | $12,000 |
| WORLDWIDE ACCESSORIES SERVICE INC | | | aviation safety violation | 2012 | $12,000 |
| WORLDPOINT | | | aviation safety violation | 2016 | $24,160 |
| WORLD MICRO | | | aviation safety violation | 2016 | $8,000 |
| WORLD COURIER INC. | | | aviation safety violation | 2012 | $35,000 |
| WORLD AIRWAYS INC | | | aviation safety violation | 2009 | $25,000 |
| WORLD AIRWAYS INC | | | aviation safety violation | 2008 | $175,000 |
| WORLD AIRWAYS INC | | | aviation safety violation | 2001 | $7,500 |
| Woodward, Inc. | Woodward Inc. | miscellaneous energy products and systems | aviation safety violation | 2012 | $246,450 |
| WOODWARD HRT INC | Woodward Inc. | miscellaneous energy products and systems | aviation safety violation | 2013 | $140,000 |
| WOODWARD HRT INC | Woodward Inc. | miscellaneous energy products and systems | aviation safety violation | 2014 | $20,000 |
| WOODWARD HRT INC | Woodward Inc. | miscellaneous energy products and systems | aviation safety violation | 2022 | $20,000 |
| Woods Aviation | | | aviation safety violation | 2023 | $90,000 |
| Woodioso Technology Limited | | | aviation safety violation | 2018 | $160,500 |
| Woodioso Technology | | | aviation safety violation | 2018 | $160,500 |
| WOODCARE USA | | | aviation safety violation | 2017 | $10,000 |
| WOOD GROUP TURBOPOWER LLC | | | aviation safety violation | 2011 | $7,425 |
| WOOD GROUP FUEL SYSTEMS INC | | | aviation safety violation | 2010 | $6,000 |
| WOOD GROUP FIELD SERVICES, INC. | | | aviation safety violation | 2013 | $28,300 |
| WOLFF AVIATION L L C | | | aviation safety violation | 2002 | $50,000 |
| WOLFF AVIATION L L C | | | aviation safety violation | 2002 | $27,900 |
| WMH TOOL GROUP | | | aviation safety violation | 2010 | $23,500 |
| WISCONSIN AVIATION INC | | | aviation safety violation | 2010 | $8,000 |
| WISCONSIN AVIATION INC | | | aviation safety violation | 2023 | $115,000 |
| WIRTGEN AMERICA | | | aviation safety violation | 2013 | $34,000 |
| WIRELESS HORIZON | | | aviation safety violation | 2016 | $17,000 |
| WINSLOW SERVICES INC | | | aviation safety violation | 2008 | $13,000 |
| WINNER AVIATION CORPORATION | | | aviation safety violation | 2005 | $16,500 |
| WINGS OF EAGLES AIR SERVICE INC | | | aviation safety violation | 2002 | $252,000 |
| WINGS AVIATION SERVICES INC | | | aviation safety violation | 2012 | $11,000 |
| WINGS AVIATION SERVICES INC | | | aviation safety violation | 2011 | $8,607 |
| WINGS AVIATION OF KENTUCKY INC | | | aviation safety violation | 2000 | $25,000 |
| Wing Over L.A. | | | aviation safety violation | 2020 | $67,050 |
| WINDSTAR AVIATION INC | | | aviation safety violation | 2022 | $12,000 |
| WINDAIRWEST LLC | | | aviation safety violation | 2011 | $10,450 |
| WINCOR NIXDORF INC | Diebold Nixdorf | miscellaneous manufacturing | aviation safety violation | 2011 | $47,250 |
| WILLAMETTE VALLEY COMPANY | | | aviation safety violation | 2013 | $19,000 |
| Wikert Air | | | aviation safety violation | 2021 | $233,133 |
| WIGGINS AIRWAYS INC | | | aviation safety violation | 2008 | $7,700 |
| WIGGINS AIRWAYS INC | | | aviation safety violation | 2004 | $8,000 |
| WIGGINS AIRWAYS | | | aviation safety violation | 2011 | $7,500 |
| WIGGINS AIRWAYS | | | aviation safety violation | 2011 | $7,500 |
| WHOLESALE ELECTRIC SUPPLY | | | aviation safety violation | 2014 | $63,000 |
| Wholesale Electric Supply | | | aviation safety violation | 2015 | $63,000 |
| WHITEWATER TRANSPORT | | | aviation safety violation | 2001 | $12,000 |
| Whirlybird Helicopters | | | aviation safety violation | 2014 | $55,125 |
| WHELEN ENGINEERING COMPANY, INC | | | aviation safety violation | 2021 | $24,000 |
| WHELEN ENGINEERING COMPANY | | | aviation safety violation | 2006 | $25,000 |
| WEYERHAEUSER ENGINEERING | Weyerhaeuser | building materials | aviation safety violation | 2015 | $35,000 |
| WETHERHILL ASSOCIATES INC | | | aviation safety violation | 2016 | $33,750 |
| WESTWIND AVIATION INC | | | aviation safety violation | 2015 | $5,000 |
| WESTPRO POWER SYSTEMS, LLC | | | aviation safety violation | 2013 | $39,000 |
| WESTOVER CORPORATION | | | aviation safety violation | 2012 | $22,398 |
| WESTJET AIRLINES LTD | | | aviation safety violation | 2001 | $5,500 |
| WESTFIELD COATINGS | RPM International | chemicals | aviation safety violation | 2013 | $36,000 |
| WESTERN TIRE EQUIPMENT AND SUPPLY COMPANY | | | aviation safety violation | 2012 | $35,000 |
| WESTERN JET AVIATION INC | | | aviation safety violation | 2014 | $9,500 |
| WESTERN JET AVIATION INC | | | aviation safety violation | 2017 | $16,500 |
| WESTERN GLOBAL AIRLINES LLC | | | aviation safety violation | 2021 | $71,250 |
| Western Global Airlines | | | aviation safety violation | 2020 | $95,000 |
| WESTERN FLOORING INSTALLATIONS | | | aviation safety violation | 2010 | $7,000 |
| WESTERN EDGE AVIATION LLC | | | aviation safety violation | 2015 | $5,000 |
| WESTERN AVIONICS INC | | | aviation safety violation | 2015 | $8,500 |
| WESTERN AVIATORS INC | | | aviation safety violation | 2011 | $5,500 |
| WESTERN AIRWAYS INC | | | aviation safety violation | 2014 | $6,600 |
| WESTERN AIRWAYS INC | | | aviation safety violation | 2016 | $15,500 |
| WESTERN AIRCRAFT INC | | | aviation safety violation | 2010 | $23,000 |
| WESTERN AIRCRAFT INC | | | aviation safety violation | 2020 | $5,650 |
| WESTERN AIRCRAFT | | | aviation safety violation | 2015 | $8,350 |
| WESTERN AIR EXPRESS INC | | | aviation safety violation | 2008 | $33,000 |
| WESTERN AIR ENTERPRISES INC | | | aviation safety violation | 2011 | $20,000 |
| WEST JET AIRCRAFT LLC | | | aviation safety violation | 2008 | $11,000 |
| WEST JET AIRCRAFT LLC | | | aviation safety violation | 2007 | $20,000 |
| WEST ISLE AIR INC | | | aviation safety violation | 2000 | $7,500 |
| WEST ISLE AIR INC | | | aviation safety violation | 2000 | $7,500 |
| WEST COAST BEAUTY SUPPLY CO. | | | aviation safety violation | 2014 | $6,500 |
| WEST BAY AIRCRAFT INC | | | aviation safety violation | 2006 | $44,000 |
| WEST AIR HOLDINGS INC | | | aviation safety violation | 2015 | $10,000 |
