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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.

62
listed Current at snapshot
90
aircraft directories
5
modification categories
Apr 12, 2016
latest recorded revision

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.

Northrop Grumman Systems Corporation supplemental type certificates, aircraft applicability, source status and dates
STC and modificationAircraft / model / TCSource status and datesHolder and authority
SA2480WE

Addition of INS attitude reference data to flight instruments. (727-1H2).

Other aircraft modificationsView record
  • Boeing 727-100 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2582WE

Installation of Litton Systems, Inc. LTN-72 Inertial Navigation System installed in the number two position and two LTN-51inertial navigation systems.

AvionicsView record
  • Boeing DC-8-63FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2634WE

Installation of three Litton LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing DC-8-63FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2785WE

Installation of dual Litton LTN-51 or LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing DC-8-62FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2800WE

Installation of dual Litton LTN-51 or LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing DC-8-61FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2804WE

Installation of dual three Litton LTN-51 or LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing DC-8-61TC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3054WE

Installation of dual Litton LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3130WE

Installation of a single or dual Litton LTN-72 INS or a single or dual LTN-72R INS/RNAV navigation system.

AvionicsView record
  • Boeing 727-100 SeriesTC A3WE
  • Boeing 727-100C SeriesTC A3WE
  • Boeing 727 SeriesTC A3WE
  • Boeing 727C SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3344WE

Installation of dual Litton LTN-72R INS/RNAV Navigation Systems.

AvionicsView record
  • Boeing DC-10-30TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3434NM

Installation of Litton LTN-92 Inertial Navigation System.

AvionicsView record
  • Boeing DC-10-10TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3439WE

Installation of single or dual Litton LTN-51 inertial navigation systems.

AvionicsView record
  • Airbus BAC 1-11 400 SeriesTC A5EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3486WE

Installation 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
  • Boeing 707-300 SeriesTC 4A26
  • Boeing 707-300B SeriesTC 4A26
  • Boeing 707-300C SeriesTC 4A26
  • Boeing 707-400 SeriesTC 4A26

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3539WE

Installation of single, palletized Litton LTN-51 or LTN-72 Inertial Navigation System (707-320C Series).

AvionicsView record
  • Boeing 707-300 SeriesTC 4A26
  • Boeing 707-300B SeriesTC 4A26
  • Boeing 707-300C SeriesTC 4A26

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3567WE

Installation 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
  • Airbus BAC 1-11 400 SeriesTC A5EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3616WE

Installation of single LTN-51 or LTN-72 Inertial Navigation System.

AvionicsView record
  • Airbus BAC 1-11 200 SeriesTC A5EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3629WE

Installation of either single LTN-51 or LTN-72.

Other aircraft modificationsView record
  • Gulfstream Aerospace G-1159TC A12EA

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3659WE

Installation of Litton LTN-72R INS/RNAV and/or LTN-72 INS navigation systems in a triple configuration.

AvionicsView record
  • Boeing 747-200 SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3912NM

Installation of a Dual Litton LTN-92 Inertial Navigation System.

AvionicsView record
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4088WE

Installation of single or dual Litton LTN-72 INS.

Other aircraft modificationsView record
  • Boeing DC-8F-54TC 4A25
  • Boeing DC-8F-55TC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4105SW

Installation of dual Litton LTN-72R (LED CDU) Area Navigation System.

AvionicsView record
  • Gulfstream Aerospace G-1159ATC A12EA

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4227SW

Installation of Litton LTN-211 VLF/Omega Long Range Navigation System.

AvionicsView record
  • Mitsubishi Heavy Industries MU-2B-40TC A10SW

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4307WE

Installation of Litton LTN-51 or LTN-72 Inertial Navigation System.

AvionicsView record
  • Boeing DC-8-61TC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA8027NM

Replacement of 3 Litton LTN-72/72R INSs with 3 LTN-92 INSs. (747-287).

Other aircraft modificationsView record
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-200C SeriesTC A20WE
  • Boeing 747-200F SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA8048NM

Installation of a Litton LTN-92 intertial navigation system (INS).

AvionicsView record
  • Boeing DC-10-40TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00115LA

Installation of Triple LTN-92 inertial navigation systems and dual LTN-2001 gloal positioning sensors.

AvionicsView record
  • Boeing 707-300 SeriesTC 4A26

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2808WE

Installation of dual Litton LTN-72 inertial navigation system.

AvionicsView record
  • Boeing 707-300C SeriesTC 4A26

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA2929WE

Installation of palletized dual LTN-51 or dual LTN-72 INS or combination of either.

Other aircraft modificationsView record
  • Lockheed Martin 382GTC A1SO

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3453NM

Installation of Triple Litton LTN-92 Inertial Navigation System.

AvionicsView record
  • Boeing DC-10-30TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3748NM

Installation of three Litton LTN-92 inertial naviagation systems (INS).

Other aircraft modificationsView record
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-200C SeriesTC A20WE
  • Boeing 747-200F SeriesTC A20WE
  • Boeing 747-300 SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA3769NM

Installation of a single Litton LTN-311 Omega/VLF Navigation System.

AvionicsView record
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4558NM

Installation of LTN-92 Inertial Navigation Systems.

AvionicsView record
  • Boeing 747-100 SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4825NM

Installation of dual Litton LTN-92 inertial navigation systems.

AvionicsView record
  • Gulfstream Aerospace G-1159TC A12EA

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA4838NM

Installation of two or three Litton LTN-92 Inertial Navigation Systems (INS).

AvionicsView record
  • Boeing DC-10-10TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA5049NM

Installation of triple Litton LTN-92 inertial navigation system.

AvionicsView record
  • Boeing DC-10-30TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA5073NM

Installation of triple Litton LTN-92 inertial navigation system.

AvionicsView record
  • Boeing DC-10-30TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA5095NM

Installation of Dual Litton LTN-311 Omega/VLF navigation systems.

AvionicsView record
  • Airbus A300 B4-103TC A35EU
  • Airbus A300 B4-203TC A35EU
  • Airbus A300 B4-2CTC A35EU
  • Airbus A300 B4-601TC A35EU
  • Airbus A300 B4-603TC A35EU
  • Airbus A300 B4-605RTC A35EU
  • Airbus A300 B4-620TC A35EU
  • Airbus A300 B4-622TC A35EU
  • Airbus A300 B4-622RTC A35EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA5516NM

Intallation of three (3) Litton LTN-92 inertial naviation systems (INS).

Other aircraft modificationsView record
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-200C SeriesTC A20WE
  • Boeing 747-200F SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA5836NM

Installation of Litton dual LTN-2001 global positioning sensors (GPS).

AvionicsView record
  • Boeing DC-10-10TC A22WE
  • Boeing DC-10-15TC A22WE
  • Boeing DC-10-30TC A22WE
  • Boeing DC-10-40TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA8018NM

Replacement of three (3) Inertial Navigation Units (INUs) P/N 463001-6110-0412 (software P/N 92-04-12).

AvionicsView record
  • Boeing 747-300 SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00078LA

Installation of Litton Triple LTN-92 Inertial Navigation Systems (INS) and Dual LTN-2001 Global Positioning Sensors (GPS).

AvionicsView record
  • Boeing DC-10-30TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00246LA

Installation of Litton Triple LTN-92 Inertial Navigation Systems (INS) and dual LTN-2001 Global Positioning Sensors (GPS).

AvionicsView record
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-300 SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00370LA

Installation of Litton Dual LTN-410 Flight Management Systems (FMS) with embedded Global Positioning Sensors (GPS) receivers.

AvionicsView record
  • Boeing 737-200 SeriesTC A16WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00504LA

Modification of Litton LTN-92 and LTN-72 Inertial Navigation Systems (INS) to implement the Area Navigation (RNAV) updating capability.

AvionicsView record
  • Boeing 747-100 SeriesTC A20WE
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-200C SeriesTC A20WE
  • Boeing 747-200F SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00632LA

Installation 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
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00714LA

Installation of Triple Litton LTN-92 Inertial Navigation System (INS) with RNAV updating.

AvionicsView record
  • Boeing 747-100 SeriesTC A20WE
  • Boeing 747-200B SeriesTC A20WE
  • Boeing 747-200C SeriesTC A20WE
  • Boeing 747-200F SeriesTC A20WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00715LA

Installation of single Litton LTN-460 Navigation Management System (NMS) with Global Position System (GPS) capability.

AvionicsView record
  • Boeing DC-10-15TC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00863LA

Installation of dual or triple Litton LTR-97 Fibre Optic Gyro System.

Other aircraft modificationsView record
  • Boeing 727-100 SeriesTC A3WE
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00864LA

Modification of existing Litton LTN-72R Inertial navigation system to include VOR/DME RNAV updating.

AvionicsView record
  • Boeing DC-10-10TC A22WE
  • Boeing DC-10-10FTC A22WE
  • Boeing DC-10-15TC A22WE
  • Boeing DC-10-30TC A22WE
  • Boeing DC-10-30F (KC-10A KDC-10)TC A22WE
  • Boeing DC-10-40TC A22WE
  • Boeing DC-10-40FTC A22WE
  • Boeing MD-10-10FTC A22WE
  • Boeing MD-10-30FTC A22WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00877LA

Installation of Litton LTR-97 Fiber Optic Gyro systems.

Other aircraft modificationsView record
  • Boeing DC-9-11TC A6WE
  • Boeing DC-9-12TC A6WE
  • Boeing DC-9-13TC A6WE
  • Boeing DC-9-14TC A6WE
  • Boeing DC-9-15TC A6WE
  • Boeing DC-9-15FTC A6WE
  • Boeing DC-9-21TC A6WE
  • Boeing DC-9-31TC A6WE
  • Boeing DC-9-32 (VC-9C)TC A6WE
  • Boeing DC-9-32TC A6WE
  • Boeing DC-9-32F (C-9A)TC A6WE
  • Boeing DC-9-32F (C-9B)TC A6WE
  • Boeing DC-9-32FTC A6WE
  • Boeing DC-9-33FTC A6WE
  • Boeing DC-9-34TC A6WE
  • Boeing DC-9-34FTC A6WE
  • Boeing DC-9-41TC A6WE
  • Boeing DC-9-51TC A6WE
  • Boeing DC-9-81 (MD-81)TC A6WE
  • Boeing DC-9-82 (MD-82)TC A6WE
  • Boeing DC-9-83 (MD-83)TC A6WE
  • Boeing DC-9-87 (MD-87)TC A6WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00878LA

Installation of Litton LTR-97 fiber optic gyro systems.

Other aircraft modificationsView record
  • Boeing 737-200 SeriesTC A16WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00884LA

Installation of Litton LTR-97 Fiber Optic Gyro systems.

Other aircraft modificationsView record
  • Boeing DC-9-81 (MD-81)TC A6WE
  • Boeing DC-9-82 (MD-82)TC A6WE
  • Boeing DC-9-83 (MD-83)TC A6WE
  • Boeing DC-9-87 (MD-87)TC A6WE
  • Boeing MD-88TC A6WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST01067LA

Installation of Litton LTR-97 fiber optic gyro systems.

Other aircraft modificationsView record
  • Boeing DC-8-51TC 4A25
  • Boeing DC-8-52TC 4A25
  • Boeing DC-8-53TC 4A25
  • Boeing DC-8-55TC 4A25
  • Boeing DC-8-61TC 4A25
  • Boeing DC-8-61FTC 4A25
  • Boeing DC-8-62TC 4A25
  • Boeing DC-8-62FTC 4A25
  • Boeing DC-8-63TC 4A25
  • Boeing DC-8-63FTC 4A25
  • Boeing DC-8-71TC 4A25
  • Boeing DC-8-71FTC 4A25
  • Boeing DC-8-72TC 4A25
  • Boeing DC-8-72FTC 4A25
  • Boeing DC-8-73TC 4A25
  • Boeing DC-8-73FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST01149LA

Installation of Litton Heading and Attitude System (LHAS).

Other aircraft modificationsView record
  • Airbus A300 B2-203TC A35EU
  • Airbus A300 B4-103TC A35EU
  • Airbus A300 B4-203TC A35EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST01278LA

Installation of dual Litton LTN-92 Inertial Reference System (INS), single Delco C-VI INS, and dual Global Positioning System (GPS).

AvionicsView record
  • Boeing 727-100 SeriesTC A3WE
  • Boeing 727-200 SeriesTC A3WE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST01668LA

Installation of a single LTN-2012 Global Positioning Sensor Unit (GPSU) and dual LTN-92 Inertial Reference System (INS).

Other aircraft modificationsView record
  • Boeing DC-8-71TC 4A25
  • Boeing DC-8-71FTC 4A25
  • Boeing DC-8-72TC 4A25
  • Boeing DC-8-72FTC 4A25
  • Boeing DC-8-73TC 4A25
  • Boeing DC-8-73FTC 4A25

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST03042NY

Installation of Fuselage Side Fairings.

Aircraft structuresView record
  • ATR - GIE Avions de Transport Régional ATR42-320TC A53EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST03037NY

One Time Supplemental Type Certificate approval for the installation of a Cabin Power System.

Cabin and interiorsView record
  • ATR - GIE Avions de Transport Régional ATR42-320TC A53EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST03036NY

One Time Supplemental Type Certificate approval for the installation of Cabin Interior Modification.

Cabin and interiorsView record
  • ATR - GIE Avions de Transport Régional ATR42-320TC A53EU

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
ST00180DE

Installation 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
  • Viking Air DHC-7-102TC A20EA
  • Viking Air DHC-7-103TC A20EA

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA01139NY-D

Installation of a Universal Avionics Systems Terrain Awareness and Warning System.

AvionicsView record
  • Raytheon Aircraft B200TC A24CE
  • Raytheon Aircraft B200CTC A24CE
  • Raytheon Aircraft B200CTTC A24CE
  • Raytheon Aircraft B200TTC A24CE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA00893NY

Installation 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
  • Raytheon Aircraft 300TC A24CE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record
SA00894NY

Installation of Auxiliary Cabin Power System. Limited to installation on serial number FA-193 ONLY.

Cabin and interiorsView record
  • Raytheon Aircraft 300TC A24CE

Current at cited snapshot

Application:

FAA holder: Northrop Grumman Systems Corporation

FAA authority record