The Light Source and Case Assembly, cataloged under National Stock Number 4920-01-020-3478, 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 Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-020-3478 |
| Primary Part Number | 2142199-2 |
| Item Name | Light Source and Case Assembly |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div |
| Status | ACTIVE |
| General Characteristics Item Description | CASE DIM. P/O TEST SET,DISPLAY UNIT P/N 2141373-2 |
| Functional Description | U/O TEST SET,DISPLAY UNIT P/N 2141373-2 |
| 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 |
|---|---|
| 2142199-2 PRIMARY | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| Reference | Meaning |
|---|---|
| 2142199-2 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
NSN 4920-01-020-3478 is a Light Source and Case Assembly, manufactured by Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-020-3478 has 1 manufacturer part number on file: 2142199-2 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div).
Key specifications for 2142199-2: Overall Height: 18.690 INCHES NOMINAL IN; General Characteristics Item Description: CASE DIM. P/O TEST SET,DISPLAY UNIT P/N 2141373-2; Overall Length: 21.630 INCHES NOMINAL IN; Overall Width: 17.190 INCHES NOMINAL IN. 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 4920-01-020-3478 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.