The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-470-6834, 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 Heligear Acquisition Co. Dba Northstar Aerospace Phoenix. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Heligear Acquisition Co. Dba Northstar Aerospace Phoenix (CAGE 12883) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-470-6834 |
| Primary Part Number | 7-511711046-1 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Heligear Acquisition Co. Dba Northstar Aerospace Phoenix |
| 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 |
|---|---|
| 7-511711046-1 PRIMARY | Heligear Acquisition Co. Dba Northstar Aerospace Phoenix (USA) |
| Reference | Meaning |
|---|---|
| 7-511711046-1 | 7/2 Vendor item drawing reference The Boeing Company |
| 7-511711046 | 5/9 Secondary reference The Boeing Company |
| 35929 | 5/9 Secondary reference Heligear Acquisition Co. Dba Northstar Aerospace Phoenix |
NSN 1660-01-470-6834 is a Duct Assembly,air Conditioning-H, manufactured by Heligear Acquisition Co. Dba Northstar Aerospace Phoenix, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-470-6834 has 1 manufacturer part number on file: 7-511711046-1 (Heligear Acquisition Co. Dba Northstar Aerospace Phoenix).
1 possible match (shared part number, not a government interchangeability claim): 6720-01-672-9839. 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 1660-01-470-6834 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.