The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-727-6865, 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 Air Force, United States Department of the Div React Lab. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | University of Dayton Div Research Institute (CAGE 50280); Air Force, United States Department of the Div React Lab (CAGE 9AD93) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-727-6865 |
| Primary Part Number | 201874618-521 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Air Force, United States Department of the Div React Lab |
| 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 |
|---|---|
| 201874618-521 | University of Dayton Div Research Institute (USA) |
| 201874618-521 PRIMARY | Air Force, United States Department of the Div React Lab (USA) |
| Reference | Meaning |
|---|---|
| 201874618-521 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-727-6865 is a Duct Assembly,air Conditioning-H, manufactured by Air Force, United States Department of the Div React Lab, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-727-6865 has 2 manufacturer part numbers on file: 201874618-521 (University of Dayton Div Research Institute), 201874618-521 (Air Force, United States Department of the Div React Lab).
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 1660-01-727-6865 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.