Sierra Industries, LTD.

  • 122 Howard Langford Dr
  • Uvalde, TX USA 78801
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The recognized leader in Citation Performance Enhancement Modifications had its modest beginnings in early 1983, in the south central Texas community of Uvalde. Sierra originated as a Flight Operations and Aircraft Maintenance Center with a toe-hold in the modifications industry. The company prospered under the able direction of its President, Mark Huffstutler and within a few years had received FAA approval for a number of STC'd modifications applicable to selected single-engine and twin-engine aircraft. In 1986, Sierra obtained the rights to produce the EAGLE and LONGWING modifications pertaining to certain models of Cessna Citation aircraft.

Sierra has also acquired the rights to Branson Industries' line of Citation modifications, and the highly regarded Robertson R/STOL line of Performance and Safety Enhancement modifications. In 1999, Sierra again acquired another highly regarded line of aircraft performance enhancements owned by the Dee Howard company of San Antonio, Texas.

Over the years, Sierra's product offering has increased from 5 products to more than 300 performance and safety modifications and aircraft enhancement items approved by the Federal Aviation Administration (FAA) under its Supplemental Type Certificate (STC) authorization authority.

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