The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-605-1741, 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 The Boeing Company. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | The Boeing Company (CAGE 77272); The Boeing Company Div Services (CAGE 0PXV4) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-605-1741 |
| Primary Part Number | 901-325-334-155 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 77272/901-325-334-155 | The Boeing Company (USA) |
| 901-325-334-155 | The Boeing Company Div Services (USA) |
| 901-325-334-155 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| BWT30957-55 | 5/9 Secondary reference Senior Uk Limited Div Senior Aerospace Bwt |
NSN 1660-01-605-1741 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-605-1741 has 3 manufacturer part numbers on file: 77272/901-325-334-155 (The Boeing Company), 901-325-334-155 (The Boeing Company Div Services), 901-325-334-155 (The Boeing Company).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.