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Heldeberg Designs LLC

11 aircraft registered with the FAA, across 4 models.

Tail number, owner or Mode S code

BLUE HERON MARATHON 7 MARATHON 2 MARATHON 2002 1 MARATHON 2 PLACE 1

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An independent site built from the Federal Aviation Administration's public aircraft registry, updated nightly by the FAA. Not affiliated with the FAA. Records can lag the official registry; the FAA's own records are authoritative. For people registered as individuals, we show the city and state but not the street address.

Data last updated Nov 2, 2026. © 2026 MMR Internet, LLC.