STC SA5423SW
FAA DRS lists SA5423SW as Current · Reissued, held by RAM Aircraft Limited Partnership, for Cessna Aircraft 340 and Cessna Aircraft 340A. Recorded change: Modification of engine cooling air louvres on top of cowling. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Modification of engine cooling air louvres on top of cowling.
SA5423SW 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: Cessna Aircraft 340 and Cessna Aircraft 340A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Cessna Aircraft 340 and Cessna Aircraft 340A model, serial range, and configuration?
- 02Which powerplant configuration, limits, instruments, and maintenance data apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related engine and powerplant STCs
Installation of Beryl D Shannon Aviation Specialties Engine Crankcase, Breather, and Vacuum Pump Air-Oil Separator in accordance with the FAA approved drawing lists shown on the attached Master Eligibility List Number MEL-2014 dated November 1, 1976, or later FAA approved drawing lists.
FAA holder: D'Shannon Products Ltd.
Lycoming O-340-A1A engine and Hartzell HC-82XG-1DB/8433-12 propeller.
FAA holder: D'Shannon Products Ltd.
Lycoming O-360-A1D engine, McCauley 2D36C14/78KM-4 or Hartzell HC-C2YK-1A/7666-2 propellers.
FAA holder: D'Shannon Products Ltd.