The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-185-0855, 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 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1660-01-185-0855 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Supplementary Features | FUNCTIONAL DESCRIPTION:USED AS AIR EJECTOR DUCT ASSEMBLY |
| 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 |
|---|---|
| 5-98360-501 | 5/9 Secondary reference U.S. Government activity |
| 5-98360-510 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-185-0855 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-185-0855: Supplementary Features: FUNCTIONAL DESCRIPTION:USED AS AIR EJECTOR DUCT ASSEMBLY; Special Features: INCONEL 625 ANNEALED DUCT PER BMS7-188; FINISH F-4.10; 3.500 O.D.,0.035 IN. WALL THK; C/O 1 DUCT,2 NUTPLATES,1 TAPE,4 RIVETS; OPPOSITE P/N -508,NHA 458-50067 IN; End Item Identification: ACFT MODEL CKC-135. 1 specification is 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 1660-01-185-0855 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.