The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-204-7532, 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 The Boeing Company Div Legacy Am&m. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-204-7532 |
| Primary Part Number | L5338447-001 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Aircraft Location | DIMMER AD1407-13 AND AD1407-11 AVIONICS SUPPLY COOLING AIR SHROUD ASSEMBLY |
| Aircraft Mission Design Series | B-1B |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| L5338447-001 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 1660-01-204-7532 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-204-7532 has 1 manufacturer part number on file: L5338447-001 (The Boeing Company Div Legacy Am&m).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-223-1202. Verify interchangeability with system specifications before substitution.
Key specifications for L5338447-001: Special Features: CONSIST OF ONE SHROUD, ONE SUPPORT, THREE BRACKET, TWO DUCTS; NHA L5338208; Aircraft Location: DIMMER AD1407-13 AND AD1407-11 AVIONICS SUPPLY COOLING AIR SHROUD ASSEMBLY; End Item Identification: B-1B AIRCRAFT; Aircraft Mission Design Series: B-1B. 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 1660-01-204-7532 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.