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Kastenholz William G COZY MARK IV, 2003, serial 0536. See the free check first.

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eFlight Registry is the data side of eFlight.com. The summit, interviews, blog and business network: www.eflight.com. Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. Not affiliated with the FAA or the NTSB. Owner details are shown as the FAA publishes them; withheld records stay withheld. Privacy · Method · Code guide · Downloads · Today's numbers as data