The Fixture,aircraft Maintenance, cataloged under National Stock Number 4920-01-386-7139, 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3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4920-01-386-7139 |
| Item Name | Fixture,aircraft Maintenance |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Reference Data and Literature | SERD 5172 |
| Functional Classification | GG-7.4 |
| Functional Description | USED TO PERFORM LEAK TEST ON THE POSITIVE PRESSURE BREATHING (PGB) REGULATOR PRESSURE MODULATING VALVE ASSEMBLY DURING REASSEMBLY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3301318-6001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-386-7139 is a Fixture,aircraft Maintenance, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-386-7139: Reference Data and Literature: SERD 5172; Functional Classification: GG-7.4; Special Features: CONSISTS OF A VALVE MOUNTING ADAPTER; OVER CENTER CLAMP WHICH SECURES THE VALVE IN PLACE AND PROVIDES A PNEUMATIC SEAL; INPUT/OUTPUT PORTS WHICH ADAPT TO THE INLET VALVE TEST STAND SUPPLY LINE AND MANIFOLD; APPROX. 6.000 IN. LG.; 2.500 IN. W.; 6.00 IN. H.; WT. 5 LBS.; MATERIAL STEEL AND ALUMINUM LBS; Functional Description: USED TO PERFORM LEAK TEST ON THE POSITIVE PRESSURE BREATHING (PGB) REGULATOR PRESSURE MODULATING VALVE ASSEMBLY DURING REASSEMBLY. 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.
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.