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Aircraft STC directory

Helio Aircraft H-391B STCs

The cited FAA DRS record snapshots contain 10 selected supplemental type certificates with status Current whose public applicability data names the Helio Aircraft H-391B. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

10
listed Current at snapshot
6
holder directories
4
modification categories
Jul 2, 2026
latest recorded revision

Recently revised H-391B STCs

Showing the 10 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.