PartsTable TECHNICAL DATA SHEET
NSN 4920-00-689-4366Government record, cited

Noise Suppressor System, Aircraft4920-00-689-4366

NSN 4920-00-689-4366 · NIIN 006894366 · Part number 381448000NS2
Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division · FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment · FSG 49 — Maintenance and Repair Shop Equipment · CAGE 75394
Government record, cited
NSN 4920-00-689-4366 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-689-4366. Manufacturer of record part number: 381448000NS2.
Also searched as  4920-00-689-4366 · 4920006894366 · NIIN 006894366 · 00-689-4366 · FSC 4920 Aircraft Maintenance and Repair Shop Specialized Equipment · CAGE 75394 · 381448000NS2
Nearby stock numbers  ·
Features
  • Noise Suppressor System,aircraft — FSC 4920
  • Reference Data and Literature: T.O. 33D4-6-387-1/4
  • Functional Description: USED TO SUPPRESS NOISE LEVELS DURING RUN/UP-RUN/DOWN
  • 1 manufacturer part number on file
  • Manufacturer of record: Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division
Identification
  • NSN: 4920-00-689-4366
  • NIIN: 006894366
  • FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
  • FSG: 49 — Maintenance and Repair Shop Equipment
  • Primary part number: 381448000NS2
  • Manufacturer: Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division
General Description

The Noise Suppressor System,aircraft, cataloged under National Stock Number 4920-00-689-4366, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division. 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4920-00-689-4366
Primary Part Number381448000NS2
Item NameNoise Suppressor System,aircraft
FSC / FSG4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment
ManufacturerEmerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division
StatusACTIVE
Reference Data and LiteratureT.O. 33D4-6-387-1/4
Functional DescriptionUSED TO SUPPRESS NOISE LEVELS DURING RUN/UP-RUN/DOWN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
381448000NS2 PRIMARY Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA)
No interchangeability data on file.
Other items in FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4920-00-000-0190
TEST SET,FLIGHT CONTROL SYSTEM
4920-00-001-1405
4920-00-001-1405 · Item name not on file
4920-00-001-1716
4920-00-001-1716 · Item name not on file
4920-00-001-1744
4920-00-001-1744 · Item name not on file
4920-00-001-1745
4920-00-001-1745 · Item name not on file
4920-00-001-1746
4920-00-001-1746 · Item name not on file
4920-00-001-1747
4920-00-001-1747 · Item name not on file
4920-00-001-1748
4920-00-001-1748 · Item name not on file

Frequently Asked Questions

What is NSN 4920-00-689-4366?

NSN 4920-00-689-4366 is a Noise Suppressor System,aircraft, manufactured by Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.

What part numbers are listed for NSN 4920-00-689-4366?

NSN 4920-00-689-4366 has 1 manufacturer part number on file: 381448000NS2 (Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division).

What are the specifications of 381448000NS2?

Key specifications for 381448000NS2: Reference Data and Literature: T.O. 33D4-6-387-1/4; Functional Description: USED TO SUPPRESS NOISE LEVELS DURING RUN/UP-RUN/DOWN. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4920-00-689-4366 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.
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