The Gearbox Assembly,aircraft, cataloged under National Stock Number 1680-00-248-7639, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Thomas Instrument, Incorporated. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-248-7639 |
| Primary Part Number | 5901-114D |
| Item Name | Gearbox Assembly,aircraft |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Aircraft Location | TRAILING EDGE FLAP |
| Reference Number Differentiating Characteristics | LOCKHEED SOURCE CONTROL DWG NO. 4C95016-114D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 5901-114D | Thomas Instrument, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 4C95016-114D | 5/9 Secondary reference U.S. Government activity |
| 5901-114D | 1/3 Source control — Government-approved source U.S. Government activity |
| 5901-114D | 5/9 Secondary reference Speco Corp |
NSN 1680-00-248-7639 is a Gearbox Assembly,aircraft, manufactured by Thomas Instrument, Incorporated, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-248-7639 has 1 manufacturer part number on file: 5901-114D (Thomas Instrument, Incorporated).
Key specifications for 5901-114D: Criticality Code Justification: FEAT; Special Features: FLAT/SLAT OPERATION CRITICAL TO OPERATION OF AIRCRAFT; Aircraft Location: TRAILING EDGE FLAP; Reference Number Differentiating Characteristics: LOCKHEED SOURCE CONTROL DWG NO. 4C95016-114D. 3 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 1680-00-248-7639 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.