SA02033AT (PAGE 1)Engine and powerplant
Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line.
FAA holder: M-20 Oil Separators LLC
Aircraft STC directory
Aeronca Aircraft SO-58B STCs
The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Aeronca Aircraft SO-58B. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
4
listed Current at snapshot
3
holder directories
2
modification categories
Jul 25, 2008
latest recorded revision
Modification demand surface
Other aircraft modifications3
Engine and powerplant1
Recently revised SO-58B STCs
Showing the 4 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA01944CH (1 OF 2)Other aircraft modifications
Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index, per ASTM Specification D-439 or D-4818 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227.
FAA holder: Experimental Aircraft Association Inc.
SA741GLOther aircraft modifications
Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index.
FAA holder: EAA Aviation Foundation
SA489EAOther aircraft modifications
Installation of ARP Inc. carburetor ice detection system.
FAA holder: Aircraft & Rotorcraft Products (ARP) Inc