The Valve Assembly, cataloged under National Stock Number 1660-01-027-1618, 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 Meggitt North Hollywood Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve Assembly |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Meggitt North Hollywood Inc (CAGE 79318) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-027-1618 |
| Primary Part Number | 305509 |
| Item Name | Valve Assembly |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Meggitt North Hollywood Inc |
| 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 |
|---|---|
| 305509 PRIMARY | Meggitt North Hollywood Inc (USA) |
| Reference | Meaning |
|---|---|
| 305509 | 5/9 Secondary reference New Sd Inc Seaton-Wilson Div Sub of Bei Electronics Inc |
NSN 1660-01-027-1618 is a Valve Assembly, manufactured by Meggitt North Hollywood Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-027-1618 has 1 manufacturer part number on file: 305509 (Meggitt North Hollywood Inc).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-082-5308. Verify interchangeability with system specifications before substitution.
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 1660-01-027-1618 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.