The Simulator-Verifier,computer, cataloged under National Stock Number 4920-01-321-7921, 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 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-321-7921 |
| Item Name | Simulator-Verifier,computer |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | SIMULATES ALL REQ'D INPUTS FROM ACFT SYSTEMS; IS PKG'D IN WEATHERPROOF CARRYING CASE 20.500 IN. LG,10.500 IN. W,9.875 IN. H; 35 LBS; INTERFACE CABLES ARE SUPPLIED; 115 V,400 HZ,SINGLE PHASE @ 5 AMPS; POWER IS DERIVED FROM ACFT; ALSO CONTAINS INTERNAL POWER SUPPLIES WHICH PROVIDE +28,+15,AND -15 V DC FOR USE IN THE SIMULATION OF INPUT SIGNALS V |
| Reference Data and Literature | SERD 0001 |
| Functional Description | USED TO TEST THE GROUND PROXIMITY WARNING SYSTEM ONBOARD THE ACFT |
| 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 |
|---|---|
| ES125009-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-321-7921 is a Simulator-Verifier,computer, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-321-7921: General Characteristics Item Description: SIMULATES ALL REQ'D INPUTS FROM ACFT SYSTEMS; IS PKG'D IN WEATHERPROOF CARRYING CASE 20.500 IN. LG,10.500 IN. W,9.875 IN. H; 35 LBS; INTERFACE CABLES ARE SUPPLIED; 115 V,400 HZ,SINGLE PHASE @ 5 AMPS; POWER IS DERIVED FROM ACFT; ALSO CONTAINS INTERNAL POWER SUPPLIES WHICH PROVIDE +28,+15,AND -15 V DC FOR USE IN THE SIMULATION OF INPUT SIGNALS V; Reference Data and Literature: SERD 0001; Special Features: AKA GROUND PROXIMITY WARNING SYSTEM SIMULATION TEST SET; Functional Description: USED TO TEST THE GROUND PROXIMITY WARNING SYSTEM ONBOARD THE ACFT. 3 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 4920-01-321-7921 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.