Sierra Industries exterior of hangar

Uvalde, Texas is well known for Sierra Industries’ popular modifications for Cessna Citations. Sierra was founded in the early 1980’s by Mark Huffstutler to develop and market aircraft performance modifications, leading to the creation of the SkyWay Group in 2005. In 2017, Huffstutler acquired experimental aircraft pioneer Lancair and relocated the company to Uvalde.


Today, the SkyWay Group, Inc., continues to offer support for the original Sierra products including the Cessna 210 Gear Door Mod, the Cessna 206 Long Range Fuel Tanks and the Robertson/STOL Short Takeoff and Landing modifications.

Additionally, owners of Sierra-modified Citation aircraft can count on experienced support from the same innovative team who developed the Eagle II, Stallion, Super II and Super SII modifications.

Co-located with Lancair in the original Sierra hangar complex at Garner Field, SkyWay MRO provides comprehensive, yet affordable service and avionics support no matter what aircraft you operate. You can count on us for maintenance, repairs and inspections to keep your aviation investment in prime condition. Plus, on-field avionics, paint and interior completion facilities ensure a convenient “one-stop” solution for both certified and experimental aircraft.

Our PMA-certified manufacturing facility continues to produce aerospace-quality components for both Lancair kits and STC modifications, utilizing sophisticated machine tools and processes painstakingly developed for Sierra’s world-class business jet enhancements.

  • General Aviation Maintenance

  • Phase & Doc Inspections

  • Annual / 100 Hour Inspections

  • Avionics Upgrades, Repair & Installation

  • Service Bulletins and Airworthiness Inspections

  • Engine Overhauls and Hot Sections

  • Airframe Repair – conventional or composite

  • Prebuy Evaluations

  • Maintenance Management

  • Aircraft Paint & Interior Services

  • Support for legacy Sierra modifications


For more information on our service and support options, please email us at