Aircraft STC directory

Raytheon Aircraft 65-A90-2 (RU-21B) STCs

The Jun 30, 2026 FAA DRS snapshot contains 3 selected supplemental type certificates with status Current whose public applicability data names the Raytheon Aircraft 65-A90-2 (RU-21B). 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

Jan 6, 2004

latest recorded revision

Modification demand surface

Aircraft structures1 Propellers1 Other aircraft modifications1

Recorded holders

Goodrich Corporation1 Raytheon Aircraft Services Inc1

Recently revised 65-A90-2 (RU-21B) STCs

Showing the 3 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA867NEAircraft structuresRevised Jan 6, 2004

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

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SA572EAPropellersRevised May 9, 2003

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.

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ST02379ATOther aircraft modificationsRevised Aug 22, 2001

Installation of a cockpit speaker and aural warning muting system.

FAA holder: Raytheon Aircraft Services, Inc

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