Aircraft STC directory

Commonwealth Aircraft 180 STCs

The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Commonwealth Aircraft 180. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

listed Current at snapshot

holder directories

modification categories

Oct 14, 2016

latest recorded revision

Modification demand surface

Other aircraft modifications3 Aircraft structures1

Recorded holders

Andrew D. Humphrey1 Experimental Aircraft Association Inc.1 EAA Aviation Foundation1 Cooper Aviation Supply Company, Inc.1

Recently revised 180 STCs

Showing the 4 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA01734SE (PG 3)Aircraft structuresRevised Oct 14, 2016

Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.

FAA holder: Andrew D. Humphrey

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SA01944CH (1 OF 2)Other aircraft modificationsRevised Mar 5, 2004

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.

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SA905GLOther aircraft modificationsRevised Mar 5, 2004

Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index.

FAA holder: EAA Aviation Foundation

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SA167CHOther aircraft modificationsRevised Jun 14, 2002

Surrendered and incorporated into STC SA00478CH.

FAA holder: Cooper Aviation Supply Company, Inc.

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