The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-177-2930, 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 Bae Systems Plc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 1660-01-177-2930 |
| Primary Part Number | 75A314120-2017 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Bae Systems Plc |
| Status | ACTIVE |
| Height | 1.480 INCHES NOMINAL IN |
| Aircraft Mission Design Series | AV-8 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 75A314120-2017 PRIMARY | Bae Systems Plc (GBR) |
| 75A314120-2017 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 75A314120-2017 | 5/9 Secondary reference British Aerospace (military Aircraft & Aerostructures) |
NSN 1660-01-177-2930 is a Duct Assembly,air Conditioning-H, manufactured by Bae Systems Plc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-177-2930 has 2 manufacturer part numbers on file: 75A314120-2017 (Bae Systems Plc), 75A314120-2017 (The Boeing Company Div Defense).
Key specifications for 75A314120-2017: Overall Length: 4.820 INCHES NOMINAL IN; Overall Width: 2.770 INCHES NOMINAL IN; Height: 1.480 INCHES NOMINAL IN; Special Features: DUCT,PLASTIC,RUBBER WITH CLOTH REINFORCING. 2 specifications are documented in the U.S. Government catalog.
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 1660-01-177-2930 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.