The Servovalve,hydraulic, cataloged under National Stock Number 1650-01-435-3073, 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 Goodrich Actuation Systems Ltd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1650-01-435-3073 |
| Primary Part Number | TY1591-03A |
| Item Name | Servovalve,hydraulic |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Goodrich Actuation Systems Ltd |
| Status | ACTIVE |
| Port Quantity | 4 |
| 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 |
|---|---|
| TY1591-03A | Goodrich Actuation Systems Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 42440-165 | 3/2 Design control — primary reference U.S. Government activity |
| 17B4C4003-1 | 5/9 Secondary reference U.S. Government activity |
NSN 1650-01-435-3073 is a Servovalve,hydraulic, manufactured by Goodrich Actuation Systems Ltd, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-435-3073 has 1 manufacturer part number on file: TY1591-03A (Goodrich Actuation Systems Ltd).
1 possible match (shared part number, not a government interchangeability claim): 1650-01-504-3811. Verify interchangeability with system specifications before substitution.
Key specifications for TY1591-03A: Port Quantity: 4; Special Features: USED ON PN 42440-1, PITCH AND TRIM ACTUATOR; End Item Identification: C-17 AIRCRAFT. 1 specification is 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 1650-01-435-3073 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.