SA00343BO (PAGE 2)Avionics
Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release).
FAA holder: Avidyne Corporation
Aircraft STC directory
Lockheed Martin Aeronautics 18 STCs
The Jun 30, 2026 FAA DRS snapshot contains 145 selected supplemental type certificates with status Current whose public applicability data names the Lockheed Martin Aeronautics 18. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
145
listed Current at snapshot
3
holder directories
13
modification categories
Mar 6, 2017
latest recorded revision
Modification demand surface
Other aircraft modifications54
Engine and powerplant14
Landing gear and brakes10
Fuel systems10
Flight controls9
Avionics8
Cabin and interiors7
Aircraft performance7
Safety and emergency equipment6
Propellers6
Aircraft structures6
Aircraft connectivity4
Electrical systems4
Recently revised 18 STCs
Showing the 100 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA3-41Other aircraft modifications
Short stack installation - Pratt & Whitney R-1830 or Wright R-1820 engines.
FAA holder: Sabreliner Aviation LLC
SA3-42Engine and powerplant
Modification to Janitrol heater air inlet scoop. Installation of Janitrol heater overheat warning system.
FAA holder: Sabreliner Aviation LLC
SA3-46Other aircraft modifications
Nose heater installation, Stewart-Warner Model 940-B24.
FAA holder: Sabreliner Aviation LLC
SA3-466Engine and powerplant
DC-3 exhaust collector ring and short stack installation.
FAA holder: Sabreliner Aviation LLC
SA105SWLanding gear and brakes
Installation of landing gear doors.
FAA holder: Signature Flight Support Corporation
SA107SWOther aircraft modifications
Installation of alcohol deicing system.
FAA holder: Signature Flight Support Corporation
SA129SWOther aircraft modifications
Installation of empennage saddle-back fairing.
FAA holder: Signature Flight Support Corporation
SA177SWOther aircraft modifications
Installation of tail cone.
FAA holder: Signature Flight Support Corporation
SA17SWOther aircraft modifications
Installation of electric trim tab servo.
FAA holder: Signature Flight Support Corporation
SA181SWSafety and emergency equipment
Installation of oxygen system.
FAA holder: Signature Flight Support Corporation
SA183SWOther aircraft modifications
Installation of air conditioner.
FAA holder: Signature Flight Support Corporation
SA187SWEngine and powerplant
Firewall fluid shutoff valve installation.
FAA holder: Signature Flight Support Corporation
SA188SWCabin and interiors
Installation of Scene-A-Ramic cabin windows.
FAA holder: Signature Flight Support Corporation
SA192SWFlight controls
Installation of Mighty Midget hydraulic selector (flap and gear).
FAA holder: Signature Flight Support Corporation
SA194SWOther aircraft modifications
Installation of cockpit side windows.
FAA holder: Signature Flight Support Corporation
SA2-100Other aircraft modifications
Installation of electric trim actuator.
FAA holder: Signature Flight Support Corporation
SA2-102Safety and emergency equipment
Installation of Emergency Fluid Shut-Off Valves.
FAA holder: Signature Flight Support Corporation
SA2-103Other aircraft modifications
Installation of anti-collision lights.
FAA holder: Signature Flight Support Corporation
SA2-105Other aircraft modifications
Installation of 36-inch length picture windows between Stations 279 and 392.
FAA holder: Signature Flight Support Corporation
SA2-1078Other aircraft modifications
Installation of flight line nose heater.
FAA holder: Signature Flight Support Corporation
SA2-1126Flight controls
Rudder anti-overbalance springs.
FAA holder: Signature Flight Support Corporation
SA2-1127Landing gear and brakes
Main landing gear and tail gear metering pins modified.
FAA holder: Signature Flight Support Corporation
SA2-1128Flight controls
Installation of elevator spring tab, trim tab, nose down spring and elevator bellcrank station 561.
FAA holder: Signature Flight Support Corporation
SA2-1129Other aircraft modifications
Hydraulic system pressure increase to 1050 p.s.i.
FAA holder: Signature Flight Support Corporation
SA2-1132Safety and emergency equipment
Installation of picture windows and/or emergency exit.
FAA holder: Signature Flight Support Corporation
SA2-1133Other aircraft modifications
Installation of integrated alcohol system.
FAA holder: Signature Flight Support Corporation
SA2-1136Other aircraft modifications
Installed a Lear rotary electric actuator No. 164EK in carburetor air control valve linkage.
FAA holder: Signature Flight Support Corporation
SA2-1148Aircraft connectivity
Installation of VOR antenna on vertical fin.
FAA holder: Signature Flight Support Corporation
SA2-1158Fuel systems
Fuel tank access port cover wing centersection L-18.
FAA holder: Signature Flight Support Corporation
SA2-1159Other aircraft modifications
Installation of anti-ice system.
FAA holder: Signature Flight Support Corporation
SA2-1165Other aircraft modifications
Modification to hydraulic system.
FAA holder: Signature Flight Support Corporation
SA2-1167Other aircraft modifications
Installation of Dual Jato.
FAA holder: Signature Flight Support Corporation
SA2-1170Other aircraft modifications
Installation of de-icer boot vacuum system.
FAA holder: Signature Flight Support Corporation
SA2-118Other aircraft modifications
Installation of short horizontal stabilizer tips and related equipment.
FAA holder: Signature Flight Support Corporation
SA2-1181Flight controls
Installation of flap speed restricting system L-18.
FAA holder: Signature Flight Support Corporation
SA2-128Other aircraft modifications
Increase incidence of horizontal stabilizer.
FAA holder: Signature Flight Support Corporation
SA2-1517Other aircraft modifications
Centersection structural rework.
FAA holder: Signature Flight Support Corporation
SA2-1518Flight controls
Rudder and aileron interconnect installation.
FAA holder: Signature Flight Support Corporation
SA2-1521Fuel systems
Installation of fuel dump systems.
FAA holder: Signature Flight Support Corporation
SA2-1522Engine and powerplant
Modification of powerplant installation.
FAA holder: Signature Flight Support Corporation
SA2-1523Propellers
Propeller autofeathering system installation.
FAA holder: Signature Flight Support Corporation
SA2-1532Safety and emergency equipment
Installation of stall warning system.
FAA holder: Signature Flight Support Corporation
SA2-154Aircraft performance
Installation of L712006-502 or503 Airspeed System.
FAA holder: Signature Flight Support Corporation
SA2-1553Safety and emergency equipment
Stall warning system.
FAA holder: Signature Flight Support Corporation
SA2-1554Aircraft performance
Increase gross weight to 22,050 pounds takeoff and 20,500 pounds landing.
FAA holder: Signature Flight Support Corporation
SA2-1571Fuel systems
Installation of PV-1 oil tank modified to 20 US gallons.
FAA holder: Signature Flight Support Corporation
SA2-163Aircraft performance
Installation of airspeed system.
FAA holder: Signature Flight Support Corporation
SA2-164Other aircraft modifications
Installation of Grimes rotating beacon P/N G5-790B or G-6965-2.
FAA holder: Signature Flight Support Corporation
SA2-201Aircraft structures
A section of the forward spar inside fuselage altered.
FAA holder: Signature Flight Support Corporation
SA2-220Other aircraft modifications
Cockpit side windows enlarged and structure altered.
FAA holder: Signature Flight Support Corporation
SA2-238Fuel systems
The anti-icer system altered to incorporate all anti-icer fluid into one tank rather than the original four-tank system.
FAA holder: Signature Flight Support Corporation
SA2-248Electrical systems
Installation of 200 amp generator system.
FAA holder: Signature Flight Support Corporation
SA2-249Cabin and interiors
Alter cabin windows on R.H. side of fuselage.
FAA holder: Signature Flight Support Corporation
SA2-250Cabin and interiors
Alter cabin windows on R.H. side of fuselage.
FAA holder: Signature Flight Support Corporation
SA2-251Other aircraft modifications
Warren McArthur chair model 225 installed in cockpit for pilot and co-pilot chairs.
FAA holder: Signature Flight Support Corporation
SA2-277Aircraft connectivity
Installation of radar antenna, radome nose and fairing.
FAA holder: Signature Flight Support Corporation
SA2-303Avionics
Installation of Sperry A-12 autopilot.
FAA holder: Signature Flight Support Corporation
SA2-306Other aircraft modifications
Installation of L-18 radome kit.
FAA holder: Signature Flight Support Corporation
SA2-307Engine and powerplant
Installation of exhaust trough and short stack using standard nacelle.
FAA holder: Signature Flight Support Corporation
SA2-310Other aircraft modifications
Installation of auxiliary electric hydraulic pump.
FAA holder: Signature Flight Support Corporation
SA2-313Other aircraft modifications
Installation of 100,000 BTU Janitrol Heater in nose. (LOCKHEED 18 S/N 2477; 2309 only).
FAA holder: Signature Flight Support Corporation
SA2-316Aircraft connectivity
Installation of flush loop antenna.
FAA holder: Signature Flight Support Corporation
SA2-320Other aircraft modifications
Installation of Surface Combustion Corporation Janitrol heater Model S100, 100,000 BTU output.
FAA holder: Signature Flight Support Corporation
SA2-327Other aircraft modifications
Installation of extended tail cone fairing.
FAA holder: Signature Flight Support Corporation
SA2-346Flight controls
Modification of flap and trailing edge.
FAA holder: Signature Flight Support Corporation
SA2-354Engine and powerplant
Installation of new engine nacelle cowling and related equipment.
FAA holder: Signature Flight Support Corporation
SA2-357Other aircraft modifications
Installation of right and left cockpit dome windows.
FAA holder: Signature Flight Support Corporation
SA2-401Electrical systems
Installation of 200 amp generator system.
FAA holder: Signature Flight Support Corporation
SA2-446Propellers
Installation of windshield and propeller anti-ice system.
FAA holder: Signature Flight Support Corporation
SA2-447Other aircraft modifications
Installation of Janitrol S-200 heater, P/N 20C65, System (derated to 150 BTU).
FAA holder: Signature Flight Support Corporation
SA2-511Landing gear and brakes
Installation of wheel well doors.
FAA holder: Signature Flight Support Corporation
SA2-513Fuel systems
Installation of fuel flow system.
FAA holder: Signature Flight Support Corporation
SA2-515Cabin and interiors
Installation of cabin seats.
FAA holder: Signature Flight Support Corporation
SA2-516Other aircraft modifications
Installation of three place couch.
FAA holder: Signature Flight Support Corporation
SA2-517Other aircraft modifications
Installation of cockpit seats.
FAA holder: Signature Flight Support Corporation
SA2-518Other aircraft modifications
Installation of 'Two Shot C02 System Installation.'.
FAA holder: Signature Flight Support Corporation
SA2-519Avionics
Installation of Bendix radar RDR-1 system not covered by SA4-72 (Lear Radome Installation).
FAA holder: Signature Flight Support Corporation
SA2-521Safety and emergency equipment
Installation of Edison continuous fire detection system.
FAA holder: Signature Flight Support Corporation
SA2-526Other aircraft modifications
Installation of horizontal stabilizer short fiberglass tip.
FAA holder: Signature Flight Support Corporation
SA2-537Aircraft performance
Installation of airspeed system.
FAA holder: Signature Flight Support Corporation
SA2-560Other aircraft modifications
Installation of Warren McArthur chair Model 225 or 239 for pilot and co-pilot.
FAA holder: Signature Flight Support Corporation
SA2-572Aircraft performance
Installation of airspeed system.
FAA holder: Signature Flight Support Corporation
SA2-58Aircraft structures
Installation of picture window.
FAA holder: Signature Flight Support Corporation
SA2-595Fuel systems
Installation of fuel flow indicator.
FAA holder: Signature Flight Support Corporation
SA2-614Flight controls
Installation of rudder spring tabs and fuselage saddle, horizontal stabilizer incidence inc to 1 degree; flap tracks cut off, flap travel reduced to 51% of original travel.
FAA holder: Signature Flight Support Corporation
SA2-634Other aircraft modifications
Installation of picture windows.
FAA holder: Signature Flight Support Corporation
SA2-636Other aircraft modifications
Empennage modifications.
FAA holder: Signature Flight Support Corporation
SA2-64Electrical systems
Installation of electrical system.
FAA holder: Signature Flight Support Corporation