The Monitor,panel, cataloged under National Stock Number 5831-00-121-7550, is classified within Federal Supply Class 5831 (Intercommunication and Public Address Systems, Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Andrea Systems Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5831-00-121-7550 |
| Primary Part Number | A81-59-1 |
| Item Name | Monitor,panel |
| FSC / FSG | 5831 / 58 — Intercommunication and Public Address Systems, Airborne |
| Manufacturer | Andrea Systems Llc |
| 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 |
|---|---|
| A81-59-1 | Andrea Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 5831PL1149842 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C2323AAIC18 | 5/1 Secondary reference U.S. Government activity |
| 270-2114-090 | C/1 Advisory reference — outside the item-of-supply concept Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| A81-59-1 | 3/9 Design control — primary reference Andrea Electronics Corporation |
NSN 5831-00-121-7550 is a Monitor,panel, manufactured by Andrea Systems Llc, classified under FSC 5831, Intercommunication and Public Address Systems, Airborne. Status: active.
NSN 5831-00-121-7550 has 1 manufacturer part number on file: A81-59-1 (Andrea Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-485-7498. Verify interchangeability with system specifications before substitution.
Key specifications for A81-59-1: End Item Identification: AN/AIC-18. 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 5831-00-121-7550 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.