The Test Set,countermeasures Set, cataloged under National Stock Number 4920-01-546-4181, 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 L3harris Technologies, Inc.. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-546-4181 |
| Primary Part Number | 2680240G004 |
| Item Name | Test Set,countermeasures Set |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| Reference Data and Literature | SERD NO. LMI 004, REV B |
| Functional Description | USED TO VERIFY LRU PERFORMANCE AND TO PERFORM FAULT ISOLATION AND REPAIR OF LRU'S OF THE AN/ALQ-172 (V) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2680240G004 PRIMARY | L3harris Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AN/ALM-289 | 5/1 Secondary reference U.S. Government activity |
NSN 4920-01-546-4181 is a Test Set,countermeasures Set, manufactured by L3harris Technologies, Inc., classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-546-4181 has 1 manufacturer part number on file: 2680240G004 (L3harris Technologies, Inc.).
Key specifications for 2680240G004: Reference Data and Literature: SERD NO. LMI 004, REV B; Functional Description: USED TO VERIFY LRU PERFORMANCE AND TO PERFORM FAULT ISOLATION AND REPAIR OF LRU'S OF THE AN/ALQ-172 (V); Part Name Assigned by Controlling Agency: TEST SET, COUNTERMEASURES; AN/ALM-289 HOT MOCK UP SYSTEM; End Item Identification: B-52H AIRCRAFT. 2 specifications are 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.
NSN 4920-01-546-4181 has DEMIL Code C. Demilitarization may be required before disposal or transfer to non-military entities.
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.