The Head,fluid Filter, cataloged under National Stock Number 1650-01-226-1663, 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 Pall Aeropower Corporation. Government technical data includes 7 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.
| Parameter | Value |
|---|---|
| NSN | 1650-01-226-1663 |
| Primary Part Number | AA-9540-74Y41D1A |
| Item Name | Head,fluid Filter |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Inlet Port Type | THREADED FEMALE, GASKET SEAL |
| Usage Design | ONE SEDIMENT BOWL |
| Outlet Port Type | THREADED FEMALE, GASKET SEAL |
| Mounting Method | THREAD BOWL |
| Quantity | 3 |
| Mounting Bolt Hole | PROVIDED |
| Filter Element | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AA-9540-74Y41D1A PRIMARY | Pall Aeropower Corporation (USA) |
NSN 1650-01-226-1663 is a Head,fluid Filter, manufactured by Pall Aeropower Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-226-1663 has 1 manufacturer part number on file: AA-9540-74Y41D1A (Pall Aeropower Corporation).
Key specifications for AA-9540-74Y41D1A: Inlet Port Type: THREADED FEMALE, GASKET SEAL; Usage Design: ONE SEDIMENT BOWL; Outlet Port Type: THREADED FEMALE, GASKET SEAL; Mounting Method: THREAD BOWL. 7 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 1650-01-226-1663 has DEMIL Code B. 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.