The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-394-8049, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-394-8049 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Material Document and Classification | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE |
| Aircraft Location | UPPER FUSELAGE |
| Material | ALUMINUM ALLOY 2024 |
| Aircraft Mission Design Series | AH-64 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 7-311150151-23 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-311150151-23 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
NSN 1660-01-394-8049 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-394-8049: Material Document and Classification: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE; Aircraft Location: UPPER FUSELAGE; End Item Identification: AH-64 APACHE HELICOPTER; Material: ALUMINUM ALLOY 2024. 4 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 1660-01-394-8049 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.