The Test Program Set, cataloged under National Stock Number 4920-01-287-8276, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-287-8276 |
| Primary Part Number | 4791991-001 |
| Item Name | Test Program Set |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Functional Description | THE TEST PROGRAM SET, INCLUDING THE TEST PROGRAM, TEST PROGRAM INSTRUCTION, ANCILLARY EQUIPMENT, INTERFACE TEST ADAPTER, HOLDING FIXTURE AND CABLE SET FOR THE AUDIO CONTROL PANEL (P/N 622-7839-002) LINE REPLACEABLE UNIT OF THE B-2 FLIGHT AVIONICS LOT 1 TEST PROGRAM SET TO BE UTILIZED ON THE FLIGHT AVIONICS CONSOLIDATED TEST SYSTEM (FACTS) CI NUMBER 210019A; PROVIDES INTERFACE FOR THE AUDIO CONTROL PANEL TO THE ELECTRONIC SYSTEM TEST SET AN/GSM-358 FOR PERFORMANCE AND DIAGNOSTIC TESTING A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4791991-001 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| DAA7123P004-101 | 5/9 Secondary reference Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| OQ-471/GSM-358 | 5/1 Secondary reference U.S. Government activity |
NSN 4920-01-287-8276 is a Test Program Set, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-287-8276 has 1 manufacturer part number on file: 4791991-001 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for 4791991-001: Special Features: POWER 28 VDC, 2 CABLES; WEIGHT 40 LBS; DIMENSIONS: HEIGHT 26 INCHES, WIDTH 22 INCHES, LENGTH 14 INCHES; INTERFACE ADAPTER IS AN ALUMINUM WELDMENT WITH ELECTRONIC SUBASSEMBLES; FIXTURE IS ALSO ALUMINUM; FIXTURE MOUNTS TO FACTS WORK SURFACE TO SECURE THE LRU UNDER TEST, FORCED AIR COOLING REQUIRED VDC; Functional Description: THE TEST PROGRAM SET, INCLUDING THE TEST PROGRAM, TEST PROGRAM INSTRUCTION, ANCILLARY EQUIPMENT, INTERFACE TEST ADAPTER, HOLDING FIXTURE AND CABLE SET FOR THE AUDIO CONTROL PANEL (P/N 622-7839-002) LINE REPLACEABLE UNIT OF THE B-2 FLIGHT AVIONICS LOT 1 TEST PROGRAM SET TO BE UTILIZED ON THE FLIGHT AVIONICS CONSOLIDATED TEST SYSTEM (FACTS) CI NUMBER 210019A; PROVIDES INTERFACE FOR THE AUDIO CONTROL PANEL TO THE ELECTRONIC SYSTEM TEST SET AN/GSM-358 FOR PERFORMANCE AND DIAGNOSTIC TESTING A; End Item Identification: PACER SPECIAL. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.