The Heat Exchanger,air to Air,aircra, cataloged under National Stock Number 1660-01-229-0680, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Boyd Corporation (woburn) Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Boyd Corporation (woburn) Inc (CAGE 11245) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-229-0680 |
| Primary Part Number | 5221G1 |
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Boyd Corporation (woburn) Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 5221G1 PRIMARY | Boyd Corporation (woburn) Inc (USA) |
| Reference | Meaning |
|---|---|
| 168985-001 | 7/2 Vendor item drawing reference L3harris Technologies, Inc. Dba Harris Corporation Div L3harris Technologies Inc Dba Harris Corporation |
NSN 1660-01-229-0680 is a Heat Exchanger,air to Air,aircra, manufactured by Boyd Corporation (woburn) Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-229-0680 has 1 manufacturer part number on file: 5221G1 (Boyd Corporation (woburn) Inc).
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 1660-01-229-0680 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.