SA174ALOther aircraft modifications
Installation of Stewart-Warner Model 940-F24 heater.
FAA holder: Aircraft Innovations, LLC
Aircraft STC directory
Hawker Beechcraft C18S STCs
The Jun 30, 2026 FAA DRS snapshot contains 23 selected supplemental type certificates with status Current whose public applicability data names the Hawker Beechcraft C18S. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
23
listed Current at snapshot
3
holder directories
7
modification categories
Sep 11, 2009
latest recorded revision
Modification demand surface
Other aircraft modifications7
Landing gear and brakes7
Aircraft structures4
Aircraft performance2
Flight controls1
Propellers1
Fuel systems1
Recently revised C18S STCs
Showing the 23 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA2-433Other aircraft modifications
Installation of a carburetor air induction system.
FAA holder: BlackHawk Aircraft Maintenance Inc.
SA4-32Other aircraft modifications
Internal combustion heaters.
FAA holder: Staggerwing Museum Foundation Inc.
SA138SOLanding gear and brakes
D18S landing gear 404-188400 on C18S.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-1016Flight controls
Recertification under subparts B &G of CAR 3 and installation of SA4-120 airspeed system, SA4-21, fuel system, and SA-2-523, stabilizer angle of incidence change and elevator seal strips.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-1230Landing gear and brakes
Installation of extended tail wheel assembly.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-1261Landing gear and brakes
Install Fiberglas bubble tail wheel enclosure doors (enclosing entire wheel).
FAA holder: Staggerwing Museum Foundation Inc.
SA2-204Other aircraft modifications
Installation of one-peice windshield and flush cockpit side-windows.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-213Aircraft structures
Installation of modified wing tips.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-328Propellers
Installation of Hartzell propeller unfeathering crossfeed system.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-338Landing gear and brakes
Installation of two (2) 25,000 BTU Janitrol Heaters installed one (1) in each wheel well.
FAA holder: Staggerwing Museum Foundation Inc.
SA2-523Other aircraft modifications
Revise horizontal stabilizer angle of incidence from -3.6 degrees to-0.5 degrees.
FAA holder: Staggerwing Museum Foundation Inc.
SA249SOAircraft performance
Increase in takeoff weight to10,200 lbs. and landing weight to9,800 lbs. and extension of aft C.G. limit to (+120.5) at 10,200 lbs. (Model may also be designated as Conrad 10,200.).
FAA holder: Staggerwing Museum Foundation Inc.
SA24CEOther aircraft modifications
Oval passenger windows.
FAA holder: Staggerwing Museum Foundation Inc.
SA3-383Landing gear and brakes
Beech D18S Goodyear wheels and brake assembly.
FAA holder: Staggerwing Museum Foundation Inc.
SA4-128Landing gear and brakes
Engines, propellers, revised nacelles, wheel-well doors, air- speed system, fuel system and elevator seal strips.
FAA holder: Staggerwing Museum Foundation Inc.
SA4-21Fuel systems
Fuel system modified to provide dual wobble pumps and suction crossfeed and attendant plumbing.
FAA holder: Staggerwing Museum Foundation Inc.
SA53CEAircraft structures
Stewart-Warner heater 940B/24 in fuselage.
FAA holder: Staggerwing Museum Foundation Inc.
SA814SOAircraft structures
Installation of wing spar strap Kit No. K7312.
FAA holder: Staggerwing Museum Foundation Inc.
SA8075SW (PAGE 3)Other aircraft modifications
Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER).
FAA holder: Razorback Fabrics Inc