The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-668-0740, 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 Textron Aviation Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-668-0740 |
| Primary Part Number | 149-340088-101 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Supplementary Features | PART OF EQUIPMENT INSTL-AIR DISTRIBUTION |
| 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 |
|---|---|
| 149-340088-101 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 149-340088-101 | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 1660-01-668-0740 is a Duct Assembly,air Conditioning-H, manufactured by Textron Aviation Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-668-0740 has 1 manufacturer part number on file: 149-340088-101 (Textron Aviation Inc).
Key specifications for 149-340088-101: Supplementary Features: PART OF EQUIPMENT INSTL-AIR DISTRIBUTION; Part Name Assigned by Controlling Agency: DUCT INSTL-COCKPIT; End Item Identification: HAWKER 800XP/850XP AND 900XP, TWIN ENGINE. 1 specification is 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.