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Spirit Aeronautics has teamed up with Honeywell Aerospace to provide 6.1 software upgrades for the Flight Management Systems in all Cessna Citation X aircraft. This is the first partnership that enables the 6.1 software upgrade performed outside of the aircraft's OEM Service Center network. 

Spirit Aeronautics will provide all needed engineering, technical services, and FAA certifications to support flight departments, MRO's and operators for 6.1 at a significantly discounted price as a kit or a completed project by our technical team. 

Honeywell announced it was sunsetting support of its FMS pre-6.1 software versions as of 2021. This upgrade allows operators to maintain Navigation database updates for their FMS system. It also holds the path for LPV, FANS 1/A, and Required Navigation Performance (RNP) as the operator chooses to select each when needed based on the aircraft's mission.