The Filter Element,air Conditioning, cataloged under National Stock Number 1660-01-428-3578, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Allied Healthcare Products, Inc. Dba Allied. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Filter Element,air Conditioning |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Allied Healthcare Products, Inc. Dba Allied (CAGE 62842) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-428-3578 |
| Primary Part Number | 520-900-023-03 |
| Item Name | Filter Element,air Conditioning |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Allied Healthcare Products, Inc. Dba Allied |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 520-900-023-03 PRIMARY | Allied Healthcare Products, Inc. Dba Allied (USA) |
| Reference | Meaning |
|---|---|
| 520-900-023-03 | 3/9 Design control — primary reference Life Support Products Inc |
NSN 1660-01-428-3578 is a Filter Element,air Conditioning, manufactured by Allied Healthcare Products, Inc. Dba Allied, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-428-3578 has 1 manufacturer part number on file: 520-900-023-03 (Allied Healthcare Products, Inc. Dba Allied).
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 1660-01-428-3578 has DEMIL Code B. 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.