The Test Set,environmental Control S, cataloged under National Stock Number 4920-00-451-9550, 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 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-451-9550 |
| Item Name | Test Set,environmental Control S |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Phase | SINGLE |
| AC Voltage Rating | 115.0 VOLTS NOMINAL |
| Reference Data and Literature | T.O. 33D2-39-12-1 |
| Electrical Power Source Relationship | OPERATING |
| Entry Date | 71-05-21 |
| Enclosure Feature | MULTIPLE ITEM W/CARRYING CASE |
| Frequency Rating | 400.0 HERTZ NOMINAL |
| Test Type for Which Designed | FUNCTIONAL |
| 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 |
|---|---|
| AN/ASM-374 | 5/2 Secondary reference U.S. Government activity |
| 12A0587-3 | 3/2 Design control — primary reference U.S. Government activity |
| 12A0587-3 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
NSN 4920-00-451-9550 is a Test Set,environmental Control S, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-00-451-9550: Phase: SINGLE; AC Voltage Rating: 115.0 VOLTS NOMINAL; Reference Data and Literature: T.O. 33D2-39-12-1; Electrical Power Source Relationship: OPERATING. 8 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 4920-00-451-9550 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.