STC ST00223MC
FAA DRS lists ST00223MC as Current · Issued, held by Duncan Aviation Inc., for Learjet 35A (C-21A). Recorded change: Cockpit Cooling System Modification. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Cockpit Cooling System Modification.
ST00223MC identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Learjet 35A (C-21A). Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Learjet 35A (C-21A) model, serial range, and configuration?
- 02Which configuration, parts, installation data, limitations, and ICAs apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related other aircraft modifications STCs
Installation of Thales vertical speed / resolution advisory indicator (VSI/RA) in accordance with United Parcel Service Company Master Drawing List (MDL) No. AER10-3440-0013, Rev. A, Dated June 14, 2011, or later FAA approved revision.
FAA holder: United Parcel Service Company
Installation and operation of a Shaw Aero Devices toilet rinse/fill check valve.
FAA holder: Parker Hannifin - Fluid Systems Division
Installation of right and left hand cockpit side windows in accordance with FAA sealed Beryl D Shannon Aviation Specialties, Inc. Drawing List DLB-1301.
FAA holder: D'Shannon Products Ltd.
Installation of Inflight Warning Systems Fan Vibration Monitor Unit, in accordance with FAA approved Inflight Warning Systems Master Data List (MDL) Drawing No. 13601, Rev. A, dated May 31, 2011, or later FAA approved revision.
FAA holder: Inflight Warning Systems Inc.