NSN 1660-01-605-8978 · NIIN 016058978 · Part number 901-325-334-127
The Boeing Company · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 77272
Government record, cited
NSN 1660-01-605-8978 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-605-8978. Manufacturer of record part number: 901-325-334-127.
Also searched as1660-01-605-8978 ·
1660016058978 ·
NIIN 016058978 ·
01-605-8978 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 77272 · 901-325-334-127
Nearby stock numbers← 1660-01-605-8470 Duct Assembly, Air Conditioning-H
·
1660-01-605-8997 Duct Assembly, Air Conditioning-H →
Features
Duct Assembly,air Conditioning-H — FSC 1660
Aircraft Location: CABIN
Material: GLASS FIBER
Aircraft Mission Design Series: V-22
1 manufacturer part number on file
Manufacturer of record: The Boeing Company
Identification
NSN: 1660-01-605-8978
NIIN: 016058978
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 901-325-334-127
Manufacturer: The Boeing Company
General Description
The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-605-8978, 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. Government technical data includes 3 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-605-8978
Primary Part Number
901-325-334-127
Item Name
Duct Assembly,air Conditioning-H
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-001-1693
DUCT ASSEMBLY,AIR CONDITIONING-H
1660-00-001-1754
BAFFLE,AIR
1660-00-001-2491
CAGE,BYPASS VALVE
1660-00-001-2493
1660-00-001-2493 · Item name not on file
1660-00-001-2496
CONTROL BOX,ELECTRICAL-ELECTRONI
1660-00-001-2497
1660-00-001-2497 · Item name not on file
1660-00-001-4130
1660-00-001-4130 · Item name not on file
1660-00-001-4479
CONTROLLER,AIR PRESSURE,AIRCRAFT
Frequently Asked Questions
What is NSN 1660-01-605-8978?
NSN 1660-01-605-8978 is a Duct Assembly,air Conditioning-H, manufactured by The Boeing Company, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-605-8978?
NSN 1660-01-605-8978 has 1 manufacturer part number on file: 901-325-334-127 (The Boeing Company).
What are the specifications of 901-325-334-127?
Key specifications for 901-325-334-127: Aircraft Location: CABIN; Part Name Assigned by Controlling Agency: DUCT ASSEMBLY-TROOP SEAT DROPDOWN, RHS AND LHS; End Item Identification: V-22 EBOM; Material: GLASS FIBER. 3 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-605-8978 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.