The Test Set,ignition,aircraft Engin, cataloged under National Stock Number 4920-01-389-8341, 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 Unison Industries Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-389-8341 |
| Primary Part Number | 137375 |
| Item Name | Test Set,ignition,aircraft Engin |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Reference Data and Literature | SERD NO. 7550 |
| Functional Description | USED TO POWER/CHECK IGNITION EXCITERS |
| 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 |
|---|---|
| 137375 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 4920PL1399347 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4920PL0828733 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 137375 | 5/9 Secondary reference U.S. Government activity |
NSN 4920-01-389-8341 is a Test Set,ignition,aircraft Engin, manufactured by Unison Industries Llc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-389-8341 has 1 manufacturer part number on file: 137375 (Unison Industries Llc).
Key specifications for 137375: Reference Data and Literature: SERD NO. 7550; Special Features: CONTAINED IN YELLOW RAIN TIGHT CASE/OPTIONAL STORAGE CASE; Functional Description: USED TO POWER/CHECK IGNITION EXCITERS; End Item Identification: F100,PW 2000 AND JT9 ENGINE. 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 4920-01-389-8341 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.