Citation IIs Sierra Style

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Sierra Citation Super II
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All the magic, or at least most of it, is thanks to the Williams FJ44. If it sounds like a complicated job, you're right. Sierra re-engineers the engine supports, and extensively replumbs, rewires and re-instruments every airplane that gets new engines.
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It keeps busy, too. Besides being a successful FJ44 mod shop, Sierra owns about 300 other STCs, many of them for Citations.
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Sierra Industries' modifications of the Cessna Citation II and S-II offer dramatic improvements in range, cruise speed, fuel efficiency and climb performance. When coupled with paint, interior and avionics updates, the total cost of a package is typically about half of what a comparable new business jet would be.
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Among the many Sierra STCs for the Citation lineup is enlarging the door. The mod is popular with air ambulance companies and cargo haulers.
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Many owners replace the steam gauges with Universal flat-panel displays and the FMS with dual Garmin 430s. The eyebrow panel for caution lights is one of Sierra's most popular mods. The FJ44 installation comes with dedicated engine gauges.
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Customers who swap engines often choose to upgrade the interior, too.
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Sierra partners with shops on the field for paint and interior mods, and it's all high-quality work. A popular mod is a three-place aft divan.