PartsTable TECHNICAL DATA SHEET
NSN 4920-01-185-4863Government record, cited

Gearbox Assembly4920-01-185-4863

NSN 4920-01-185-4863 · NIIN 011854863 · Part number C80778-1
Transdigm Inc · FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment · FSG 49 — Maintenance and Repair Shop Equipment · CAGE 04638
Government record, cited
NSN 4920-01-185-4863 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-185-4863. Manufacturer of record part number: C80778-1.
Also searched as  4920-01-185-4863 · 4920011854863 · NIIN 011854863 · 01-185-4863 · FSC 4920 Aircraft Maintenance and Repair Shop Specialized Equipment · CAGE 04638 · C80778-1
Nearby stock numbers  ·
Features
  • Gearbox Assembly — FSC 4920
  • 1 manufacturer part number on file
  • Manufacturer of record: Transdigm Inc
Identification
  • NSN: 4920-01-185-4863
  • NIIN: 011854863
  • FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
  • FSG: 49 — Maintenance and Repair Shop Equipment
  • Primary part number: C80778-1
  • Manufacturer: Transdigm Inc
General Description

The Gearbox Assembly, cataloged under National Stock Number 4920-01-185-4863, 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 Transdigm Inc. 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
NSN4920-01-185-4863
Primary Part NumberC80778-1
Item NameGearbox Assembly
FSC / FSG4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment
ManufacturerTransdigm Inc
StatusACTIVE
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
C80778-1 PRIMARY Transdigm Inc (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 4920-01-185-4863?

NSN 4920-01-185-4863 is a Gearbox Assembly, manufactured by Transdigm Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.

What part numbers are listed for NSN 4920-01-185-4863?

NSN 4920-01-185-4863 has 1 manufacturer part number on file: C80778-1 (Transdigm Inc).

What are the specifications of C80778-1?

Key specifications for C80778-1: End Item Identification: TURBO PROP ENGINE MODEL T-56. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4920-01-185-4863 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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