The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-583-9017, 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 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-583-9017 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 TYPE I MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-23377 TYPE I MIL SPEC 2ND TREATMENT RESPONSE |
| Material Document and Classification | QQ-A-250/4 T3 FED SPEC 1ST MATERIAL RESPONSE AND WW-T-700/6 0.50 OD MIL SPEC 2ND MATERIAL RESPONSE |
| Surface Treatment | ANODIZE AND PRIMER |
| Aircraft Location | RETURN-INBOARD FORWARD AVIONICS COOLING |
| Material | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 |
| Aircraft Mission Design Series | E-3A A |
| 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 |
|---|---|
| 204-66760-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-583-9017 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-583-9017: Surface Treatment Document and Classification: MIL-A-8625 TYPE I MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-23377 TYPE I MIL SPEC 2ND TREATMENT RESPONSE; Material Document and Classification: QQ-A-250/4 T3 FED SPEC 1ST MATERIAL RESPONSE AND WW-T-700/6 0.50 OD MIL SPEC 2ND MATERIAL RESPONSE; Surface Treatment: ANODIZE AND PRIMER; Aircraft Location: RETURN-INBOARD FORWARD AVIONICS COOLING. 6 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 1660-01-583-9017 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.