The Accumulator,hydraulic, cataloged under National Stock Number 1650-01-129-3911, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-129-3911 |
| Primary Part Number | 65664-09910-101 |
| Item Name | Accumulator,hydraulic |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Bleeder Opening | INCLUDED |
| Overall Diameter | 6.760 INCHES MINIMUM AND 6.800 INCHES MAXIMUM IN |
| Shape | CYLINDRICAL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NUMBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 65664-09910-101 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65664-09910-101 | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 898225 | 5/3 Secondary reference U.S. Government activity |
NSN 1650-01-129-3911 is a Accumulator,hydraulic, manufactured by Tactair Fluid Controls Inc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-129-3911 has 2 manufacturer part numbers on file: 65664-09910-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65664-09910-101 (Tactair Fluid Controls Inc).
1 possible match (shared part number, not a government interchangeability claim): 1650-01-348-0990. Verify interchangeability with system specifications before substitution.
Key specifications for 65664-09910-101: Bleeder Opening: INCLUDED; Overall Diameter: 6.760 INCHES MINIMUM AND 6.800 INCHES MAXIMUM IN; Shape: CYLINDRICAL; Overall Length: 25.500 INCHES MINIMUM AND 26.500 INCHES MAXIMUM IN. 4 specifications are 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.
NSN 1650-01-129-3911 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.