The Fixture Assembly,test,interface, cataloged under National Stock Number 4920-01-479-9258, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-479-9258 |
| Item Name | Fixture Assembly,test,interface |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Special Test Features | THE POWER DAMPING ASSY SATISFIES THE REQUIREMENTS TO PROVIDE THE PHYSICAL AND ELECTRICAL CONNECTIONS BETWEEN THE HIGH-POWER DEVICE TEST SYSTEM AND THE UNIT UNDER TEST TO FACILITATE ITS TESTING, TROUBLESHOOTING, AND REPAIR |
| Functional Description | THE APU POWER DAMPING ASSY ABSORBS DISTORTION PRODUCTS IN THE 400HZ POWER WHICH ARE GENERATED BY THE BAND 2 TRANSISTOR WHEN IT GOES INTO RADIATE MODE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 736670-1 | 3/2 Design control — primary reference U.S. Government activity |
| 736670-1 | 3/9 Design control — primary reference Drs Sustainment Systems, Inc. |
NSN 4920-01-479-9258 is a Fixture Assembly,test,interface, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-479-9258: Special Test Features: THE POWER DAMPING ASSY SATISFIES THE REQUIREMENTS TO PROVIDE THE PHYSICAL AND ELECTRICAL CONNECTIONS BETWEEN THE HIGH-POWER DEVICE TEST SYSTEM AND THE UNIT UNDER TEST TO FACILITATE ITS TESTING, TROUBLESHOOTING, AND REPAIR; Special Features: THE ASSY CONTAINS 3R-C NETWORKS, EACH CONSISTING OF A 15 UF CAPACITOR IN SERIES FIVE PARALLEL 50OHM RESISTORS. ONE SERIES R-C NETWORK IS CONNECTED FROM EACH PHASE OF THE APUOUTPUT TO NEUTRAL; Functional Description: THE APU POWER DAMPING ASSY ABSORBS DISTORTION PRODUCTS IN THE 400HZ POWER WHICH ARE GENERATED BY THE BAND 2 TRANSISTOR WHEN IT GOES INTO RADIATE MODE; End Item Identification: HPDTS/ALQ-99 XMTR. 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 4920-01-479-9258 has DEMIL Code Q. 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.