SE94WEOther aircraft modifications
Installation of oil fitting(AN-823-5D) in rocker box cover.
FAA holder: Airwolf Filter Corporation
Aircraft STC directory
Continental Motors IO-520-M STCs
The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Continental Motors IO-520-M. 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 16, 2020
latest recorded revision
Modification demand surface
Other aircraft modifications3
Engine and powerplant1
Recently revised IO-520-M 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
SE00115SEOther aircraft modifications
Replaces Teledyne-Continental Part Number 646277 lifter bodies.
FAA holder: B & B Aviation LLC
SE5785NMOther aircraft modifications
Replacement of Teledyne Continental original camshaft with P/N 32122-2.
FAA holder: B & B Aviation LLC
SE09979SCEngine and powerplant
Modification of Teledyne Continental Motors IO-520-B, IO-520-BA, or IO-520-BB engine to an Ultimate Engines IO-550-B/UE engine.
FAA holder: General Aviation Modifications, Inc.