The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-491-5022, 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 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1660-01-491-5022 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Material Document and Classification | AMS4071 FED STD SINGLE MATERIAL RESPONSE |
| Material Thickness | 0.065 INCHES NOMINAL IN |
| Aircraft Location | AIRCRAFT CABIN |
| Material | ALUMINUM ALLOY |
| Aircraft Mission Design Series | E-8C |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C99E35616-15 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| C99E35616-15 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 1660-01-491-5022 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-491-5022: Material Document and Classification: AMS4071 FED STD SINGLE MATERIAL RESPONSE; Overall Length: 1.000 INCHES NOMINAL IN; Overall Width: 1.500 INCHES NOMINAL IN; Material Thickness: 0.065 INCHES NOMINAL IN. 5 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.
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.