The Heat Exchanger,air to Air,aircra, cataloged under National Stock Number 1660-01-673-2247, 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 Ametek Thermal Systems Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | Hamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); Ametek Thermal Systems Inc (CAGE 12536) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-673-2247 |
| Primary Part Number | 90274-0001 |
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Ametek Thermal Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 5100139 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 90274-0001 PRIMARY | Ametek Thermal Systems Inc (USA) |
NSN 1660-01-673-2247 is a Heat Exchanger,air to Air,aircra, manufactured by Ametek Thermal Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-673-2247 has 2 manufacturer part numbers on file: 5100139 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 90274-0001 (Ametek Thermal Systems 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 1660-01-673-2247 has DEMIL Code D. 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.