The Heat Exchanger,air to Air,aircra, cataloged under National Stock Number 1660-01-686-3140, 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 Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-686-3140 |
| Primary Part Number | 2340630-2 |
| Item Name | Heat Exchanger,air to Air,aircra |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Case with Built-in Condensate Drain Pan | INCLUDED |
| Cooling Medium | AIR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2340630-2 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 967A0000-02 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 967A0000-02 | Liebherr-Aerospace Toulouse SAS (FRA) |
NSN 1660-01-686-3140 is a Heat Exchanger,air to Air,aircra, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-686-3140 has 3 manufacturer part numbers on file: 2340630-2 (Honeywell International Inc. Div Aerospace - Torrance), 967A0000-02 (Honeywell International Inc. Div Aerospace - Torrance), 967A0000-02 (Liebherr-Aerospace Toulouse SAS).
Key specifications for 2340630-2: Case with Built-in Condensate Drain Pan: INCLUDED; Part Name Assigned by Controlling Agency: HEAT EXCHANGER,AIR TO AIR,AIRCRAFT; End Item Identification: MAIN HEAT EXCHANGER,AIRCRAFT A-330,A-340 A; Cooling Medium: AIR. 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.
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.