The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-209-1533, 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 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1660-01-209-1533 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Aircraft Station Number | FS1249.0 TO 1342.690 |
| Aircraft Location | DUCT ASSEMBLY, UPPER, CTR CARGO COMPARTMENT AIR DISTRIBUTOR |
| Aircraft Mission Design Series | C-5A A |
| 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 |
| Reference | Meaning |
|---|---|
| 4A12165-103A | 5/2 Secondary reference U.S. Government activity |
| 4A12224-103B | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-209-1533 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-209-1533: Aircraft Station Number: FS1249.0 TO 1342.690; Special Features: CONSIST OF ONE DUCT -105A, ONE CAP -107A, ONE LUG, EIGHTEEN STAND OFFS, ONE NUT A; Aircraft Location: DUCT ASSEMBLY, UPPER, CTR CARGO COMPARTMENT AIR DISTRIBUTOR; End Item Identification: C-5A AIRCRAFT A. 3 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 1660-01-209-1533 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.