NSN 2990-01-540-8938 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-540-8938. Manufacturer of record part number: 50-389133-11.
The Dampener,vibration,governor, cataloged under National Stock Number 2990-01-540-8938, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Textron Aviation Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2990-00-001-0001
BLOWER ASSEMBLY
2990-00-001-1248
2990-00-001-1248 · Item name not on file
2990-00-001-1250
2990-00-001-1250 · Item name not on file
2990-00-001-2055
2990-00-001-2055 · Item name not on file
2990-00-001-3498
2990-00-001-3498 · Item name not on file
2990-00-001-3520
2990-00-001-3520 · Item name not on file
2990-00-001-3521
2990-00-001-3521 · Item name not on file
2990-00-001-3522
CAP ASSEMBLY,MUFFLE
Frequently Asked Questions
What is NSN 2990-01-540-8938?
NSN 2990-01-540-8938 is a Dampener,vibration,governor, manufactured by Textron Aviation Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
What part numbers are listed for NSN 2990-01-540-8938?
NSN 2990-01-540-8938 has 1 manufacturer part number on file: 50-389133-11 (Textron Aviation Inc).
What are the specifications of 50-389133-11?
Key specifications for 50-389133-11: Special Features: FOR NOSE LANDING GEAR INSTALLATION; End Item Identification: BEECH KING AIRCRAFT C-90. 0 specifications are documented in the U.S. Government catalog.
Is NSN 2990-01-540-8938 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.
What is the DEMIL code for NSN 2990-01-540-8938?
NSN 2990-01-540-8938 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.