The Radiator,gearbox,main, cataloged under National Stock Number 1615-01-092-1987, 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 Fl Industries Holdings Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 1615-01-092-1987 |
| Primary Part Number | 83D99-3 |
| Item Name | Radiator,gearbox,main |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Manufacturer | Fl Industries Holdings Inc |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. 70361-03004 |
| 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 |
|---|---|
| 70361-03004 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 83D99-3 | Fl Industries Holdings Inc (USA) |
| 70361-03004-102 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 1615-01-092-1987 is a Radiator,gearbox,main, manufactured by Fl Industries Holdings Inc, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
NSN 1615-01-092-1987 has 3 manufacturer part numbers on file: 70361-03004 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 83D99-3 (Fl Industries Holdings Inc), 70361-03004-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
1 possible match (shared part number, not a government interchangeability claim): 1615-01-388-7630. Verify interchangeability with system specifications before substitution.
Key specifications for 83D99-3: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. 70361-03004. 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 1615-01-092-1987 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.