The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-252-6987, 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 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1660-01-252-6987 |
| Item Name | Diffuser,air,aircraft Heating an |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HEATING AND VENTILATATING SYSTEM |
| General Characteristics Item Description | OVERHEAD AIR,COCKPIT; DIFFUSER INCLUDES MUFFLER ASSY |
| 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 |
|---|---|
| 204-67277-1 | 3/2 Design control — primary reference U.S. Government activity |
| 204-67277 | D/9 Drawing number reference only U.S. Government activity |
NSN 1660-01-252-6987 is a Diffuser,air,aircraft Heating an, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-252-6987: FSC Application Data: AIRCRAFT HEATING AND VENTILATATING SYSTEM; General Characteristics Item Description: OVERHEAD AIR,COCKPIT; DIFFUSER INCLUDES MUFFLER ASSY; End Item Identification: E-3A AIRCRAFT A. 2 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 1660-01-252-6987 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.