The Test Station,fuel Control System, cataloged under National Stock Number 4920-01-590-6791, 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 Viavi Solutionsllc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-590-6791 |
| Primary Part Number | PSD90S-F16 |
| Item Name | Test Station,fuel Control System |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Viavi Solutionsllc |
| Status | ACTIVE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| PSD90S-F16 PRIMARY | Viavi Solutionsllc (USA) |
| Reference | Meaning |
|---|---|
| PSD90S-F16 | 5/9 Secondary reference Viavi Solutions Llc Div Lenexa |
| 4920PL1905525 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4920-01-590-6791 is a Test Station,fuel Control System, manufactured by Viavi Solutionsllc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-590-6791 has 1 manufacturer part number on file: PSD90S-F16 (Viavi Solutionsllc).
Key specifications for PSD90S-F16: Special Features: USED TO CALIBRATE AND TROUBLE SHOOT THE FUEL QUANTITY MEASURING SYSTEM AND THE LEVEL SENSING SYSTEM. LENGTH: 21.5 IN; WIDTH: 14.7 IN; HEIGHT: 9.0 IN; WEIGHT: 26.5 LBS. SPECIAL FEATURES:INTERFACE UNIT HAS LOW LEVEL SENSOR MENAUREMENT BOARD THAT ALLOWS TESTING OFTHE LOW-LEVEL SENSORS TO VERIFY IF THESENSORS ARE EITHER WET, DRY, OPEN OR SHORTED LBS; End Item Identification: F16A/B/C/D. 0 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 4920-01-590-6791 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.