SA867NEAircraft structures
Installation of lower wing front spar cap reinforcement kit. (C90A S/N LJ-1063 THUR LJ-1087 EXCEPT LJ-1085).
FAA holder: SK Aircraft Company Inc
Aircraft STC directory
Raytheon Aircraft 65-A90-3 (RU-21C) STCs
The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Raytheon Aircraft 65-A90-3 (RU-21C). 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
4
modification categories
Jan 6, 2004
latest recorded revision
Modification demand surface
Aircraft structures1
Propellers1
Other aircraft modifications1
Engine and powerplant1
Recently revised 65-A90-3 (RU-21C) 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
SA572EAPropellers
Installation of Goodrich Model 5735K deicer kit (P/N 5735 deicer boot, P/N D-5735-1 cable, P/N 5735H hardware kit). Limited to aircraft which incorporate Goodrich Propeller Deicing Systems equipped with Goodrich Propeller Deicer Boot P/N 4E1185-5 on Hartzell propellers as listed on STC SA572EA eligibility list.
FAA holder: Goodrich Corp.
ST02379ATOther aircraft modifications
Installation of a cockpit speaker and aural warning muting system.
FAA holder: Raytheon Aircraft Services, Inc
SA8809SWEngine and powerplant
Installation of an engine cowling safety clip.
FAA holder: Sugar Land Jet Center, A Texas Corporation