The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-546-3202, 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 Senior Uk Limited Div Senior Aerospace Bwt. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | The Boeing Company (CAGE 77272); Senior Uk Limited Div Senior Aerospace Bwt (CAGE K2962) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-546-3202 |
| Primary Part Number | BWT15993-3 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Senior Uk Limited Div Senior Aerospace Bwt |
| 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 |
|---|---|
| 901-325-554-103 | The Boeing Company (USA) |
| BWT15993-3 PRIMARY | Senior Uk Limited Div Senior Aerospace Bwt (GBR) |
NSN 1660-01-546-3202 is a Duct Assembly,air Conditioning-H, manufactured by Senior Uk Limited Div Senior Aerospace Bwt, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-546-3202 has 2 manufacturer part numbers on file: 901-325-554-103 (The Boeing Company), BWT15993-3 (Senior Uk Limited Div Senior Aerospace Bwt).
1 possible match (shared part number, not a government interchangeability claim): 1660-01-546-6717. 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 1660-01-546-3202 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.