FAA-listed STC holder
Northrop Grumman Systems Corporation STCs
The Jun 30, 2026 FAA DRS snapshot lists 62 selected supplemental type certificates with status Current under Northrop Grumman Systems Corporation. The records span 90 public aircraft directories and 5 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
Modification mix
Aircraft represented
Recently revised records
Showing the 62 most recently revised records. Category directories provide the complete paginated discovery path.
62 displayed records.
Search every indexed record for this holder. The table below contains the recently revised records shown on this page.
| STC and modification | Aircraft / model / TC | Source status and dates | Holder and authority |
|---|---|---|---|
SA2480WEAddition of INS attitude reference data to flight instruments. (727-1H2).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2582WEInstallation of Litton Systems, Inc. LTN-72 Inertial Navigation System installed in the number two position and two LTN-51inertial navigation systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2634WEInstallation of three Litton LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2785WEInstallation of dual Litton LTN-51 or LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2800WEInstallation of dual Litton LTN-51 or LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2804WEInstallation of dual three Litton LTN-51 or LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3054WEInstallation of dual Litton LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3130WEInstallation of a single or dual Litton LTN-72 INS or a single or dual LTN-72R INS/RNAV navigation system.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3344WEInstallation of dual Litton LTN-72R INS/RNAV Navigation Systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3434NMInstallation of Litton LTN-92 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3439WEInstallation of single or dual Litton LTN-51 inertial navigation systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3486WEInstallation of dual Litton LTN-51, or dual Litton LTN-72, or one Litton LTN-51 and one Litton LTN-72 Inertial Navigation Systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3539WEInstallation of single, palletized Litton LTN-51 or LTN-72 Inertial Navigation System (707-320C Series).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3567WEInstallation of single or dual Litton LTN-51 or LTN-72 INS. (1-11 SERIES 401/AK, 410/AQ, 419/EP, 412A/EP).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3616WEInstallation of single LTN-51 or LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3629WEInstallation of either single LTN-51 or LTN-72.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3659WEInstallation of Litton LTN-72R INS/RNAV and/or LTN-72 INS navigation systems in a triple configuration.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3912NMInstallation of a Dual Litton LTN-92 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4088WEInstallation of single or dual Litton LTN-72 INS.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4105SWInstallation of dual Litton LTN-72R (LED CDU) Area Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4227SWInstallation of Litton LTN-211 VLF/Omega Long Range Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4307WEInstallation of Litton LTN-51 or LTN-72 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA8027NMReplacement of 3 Litton LTN-72/72R INSs with 3 LTN-92 INSs. (747-287).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA8048NMInstallation of a Litton LTN-92 intertial navigation system (INS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00115LAInstallation of Triple LTN-92 inertial navigation systems and dual LTN-2001 gloal positioning sensors.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2808WEInstallation of dual Litton LTN-72 inertial navigation system.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA2929WEInstallation of palletized dual LTN-51 or dual LTN-72 INS or combination of either.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3453NMInstallation of Triple Litton LTN-92 Inertial Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3748NMInstallation of three Litton LTN-92 inertial naviagation systems (INS).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA3769NMInstallation of a single Litton LTN-311 Omega/VLF Navigation System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4558NMInstallation of LTN-92 Inertial Navigation Systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4825NMInstallation of dual Litton LTN-92 inertial navigation systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA4838NMInstallation of two or three Litton LTN-92 Inertial Navigation Systems (INS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA5049NMInstallation of triple Litton LTN-92 inertial navigation system.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA5073NMInstallation of triple Litton LTN-92 inertial navigation system.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA5095NMInstallation of Dual Litton LTN-311 Omega/VLF navigation systems.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA5516NMIntallation of three (3) Litton LTN-92 inertial naviation systems (INS).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA5836NMInstallation of Litton dual LTN-2001 global positioning sensors (GPS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA8018NMReplacement of three (3) Inertial Navigation Units (INUs) P/N 463001-6110-0412 (software P/N 92-04-12).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00078LAInstallation of Litton Triple LTN-92 Inertial Navigation Systems (INS) and Dual LTN-2001 Global Positioning Sensors (GPS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00246LAInstallation of Litton Triple LTN-92 Inertial Navigation Systems (INS) and dual LTN-2001 Global Positioning Sensors (GPS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00370LAInstallation of Litton Dual LTN-410 Flight Management Systems (FMS) with embedded Global Positioning Sensors (GPS) receivers.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00504LAModification of Litton LTN-92 and LTN-72 Inertial Navigation Systems (INS) to implement the Area Navigation (RNAV) updating capability.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00632LAInstallation of Single Litton LTN-450 Navigation Management Systems (NMS) with embedded Global Position System (GPS) receiver and provisions for dual LTN-450 NMS.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00714LAInstallation of Triple Litton LTN-92 Inertial Navigation System (INS) with RNAV updating.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00715LAInstallation of single Litton LTN-460 Navigation Management System (NMS) with Global Position System (GPS) capability.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00863LAInstallation of dual or triple Litton LTR-97 Fibre Optic Gyro System.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00864LAModification of existing Litton LTN-72R Inertial navigation system to include VOR/DME RNAV updating.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00877LAInstallation of Litton LTR-97 Fiber Optic Gyro systems.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00878LAInstallation of Litton LTR-97 fiber optic gyro systems.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00884LAInstallation of Litton LTR-97 Fiber Optic Gyro systems.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST01067LAInstallation of Litton LTR-97 fiber optic gyro systems.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST01149LAInstallation of Litton Heading and Attitude System (LHAS).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST01278LAInstallation of dual Litton LTN-92 Inertial Reference System (INS), single Delco C-VI INS, and dual Global Positioning System (GPS).AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST01668LAInstallation of a single LTN-2012 Global Positioning Sensor Unit (GPSU) and dual LTN-92 Inertial Reference System (INS).Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST03042NYInstallation of Fuselage Side Fairings.Aircraft structuresView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST03037NYOne Time Supplemental Type Certificate approval for the installation of a Cabin Power System.Cabin and interiorsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST03036NYOne Time Supplemental Type Certificate approval for the installation of Cabin Interior Modification.Cabin and interiorsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
ST00180DEInstallation of Long Range Fuel System for the Viking Air Limited Model DHC-7-102 and 103 airplane in accordance with Branson Aircraft Corporation (BAC) Drawing 47100, Rev. F, dated March 10, 2011, or later FAA approved revision.Fuel systemsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA01139NY-DInstallation of a Universal Avionics Systems Terrain Awareness and Warning System.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA00893NYInstallation of a Dual Collins EFIS-85B Electronic Flight Instrument System, Collins TWR-850 Turbulence Radar System, Universal Avionics Flight Management System UNS-1B+ and Dual Honeywell YG-1782B Inertial Laser Reference Systems. Limited to installation on serial number FA-193 ONLY.AvionicsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |
SA00894NYInstallation of Auxiliary Cabin Power System. Limited to installation on serial number FA-193 ONLY.Cabin and interiorsView record |
| Current at cited snapshot Application: | FAA holder: Northrop Grumman Systems Corporation FAA authority record |