The Cooler,fluid Gearbo, cataloged under National Stock Number 1615-01-280-9889, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Ametek Thermal Systems Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-01-280-9889 |
| Primary Part Number | 11552-000 |
| Item Name | Cooler,fluid Gearbo |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Manufacturer | Ametek Thermal Systems Inc |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERIENTIATED BY SOURCE CONTROL DRAWING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 65364-12107-101 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 11552-000 | Ametek Thermal Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 65364-12107 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 1615-01-280-9889 is a Cooler,fluid Gearbo, manufactured by Ametek Thermal Systems Inc, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
NSN 1615-01-280-9889 has 2 manufacturer part numbers on file: 65364-12107-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 11552-000 (Ametek Thermal Systems Inc).
Key specifications for 11552-000: End Item Identification: CH-53 ACFT,HUGHES TREITLER MFG CORP,11552-000; Reference Number Differentiating Characteristics: AS DIFFERIENTIATED BY SOURCE CONTROL DRAWING. 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 1615-01-280-9889 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.