The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-177-2932, 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 Div Defense. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-177-2932 |
| Primary Part Number | 75A314120-2025 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Height | 5.060 INCHES NOMINAL IN |
| Aircraft Mission Design Series | AV-8 |
| 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 |
|---|---|
| 75A314120-2025 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 75A314120-2025 | 5/9 Secondary reference British Aerospace (military Aircraft & Aerostructures) |
| 75A314120-2025 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems (operations) Limited |
NSN 1660-01-177-2932 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company Div Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-177-2932 has 1 manufacturer part number on file: 75A314120-2025 (The Boeing Company Div Defense).
Key specifications for 75A314120-2025: Overall Length: 7.450 INCHES NOMINAL IN; Overall Width: 7.740 INCHES NOMINAL IN; Height: 5.060 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 1660-01-177-2932 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.