The Modification Kit,aircraft Compon, cataloged under National Stock Number 1680-01-556-0569, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Robertson Fuel Systems, L.l.c.. 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 | 1680-01-556-0569 |
| Primary Part Number | HM020-528-21 |
| Item Name | Modification Kit,aircraft Compon |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Robertson Fuel Systems, L.l.c. |
| Status | ACTIVE |
| 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 |
|---|---|
| HM020-528-21 PRIMARY | Robertson Fuel Systems, L.l.c. (USA) |
NSN 1680-01-556-0569 is a Modification Kit,aircraft Compon, manufactured by Robertson Fuel Systems, L.l.c., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-556-0569 has 1 manufacturer part number on file: HM020-528-21 (Robertson Fuel Systems, L.l.c.).
Key specifications for HM020-528-21: Special Features: KIT INCLUDES HM026-002-400 (B-KIT) AND HM020-513-111 (INSTALLATION A-KIT FOR INTERNAL AUXILIARY FUEL TRANSFER SYSTEM): USED ON AIRCRAFT MODIFIED WITH CEFS (CRASHWORTHY EXTERNAL FUEL SYSTEM); Part Name Assigned by Controlling Agency: A/B KIT,IAFTS; End Item Identification: UH-60 BLACKHAWK HELICOPTER, 1520-01-035-0266 AND 1520-01-298-4532. 0 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 1680-01-556-0569 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.