The Blower Housing,heat Exchanger, cataloged under National Stock Number 1660-01-474-2560, 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 Lockheed Martin Corporation Div Rms. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 1660-01-474-2560 |
| Primary Part Number | 20509149-5 |
| Item Name | Blower Housing,heat Exchanger |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| 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 |
|---|---|
| 20509149-5 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 20509149-5 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
NSN 1660-01-474-2560 is a Blower Housing,heat Exchanger, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-474-2560 has 1 manufacturer part number on file: 20509149-5 (Lockheed Martin Corporation Div Rms).
Key specifications for 20509149-5: Special Features: MOUNTED ON THE ANTENNA DOOR; End Item Identification: COOLING SYSTEM ON A PHASE ARRAY RADAR ANTENNA FOR THE COBRA COUNTER BATTERY RADAR BATTLEFIELD FORCE SYSTEM. 0 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.