SE3873NMOther aircraft modifications
Installation of two AiResearch induction air intercoolers.
FAA holder: Franklin Aircraft Engines Inc.
Aircraft STC directory
Textron Lycoming AVCO IO-540-R1A5 STCs
The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Textron Lycoming AVCO IO-540-R1A5. 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
3
modification categories
May 25, 2022
latest recorded revision
Modification demand surface
Other aircraft modifications2
Engine and powerplant1
Fuel systems1
Recently revised IO-540-R1A5 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
SE02555ATEngine and powerplant
Consolidated Fuel Systems 201F series fuel pump assembly on various Textron Lycoming engine models.
FAA holder: Kelly Aerospace Energy Systems LLC
SE8193SWOther aircraft modifications
Grind nitriden high compression cylinder barrles to plus .010 oversize and install SL75089 P10 piston, SL74242 P10 compression ring, and SL73857 P10 oil ring.
FAA holder: Superior Air Parts Inc.