The Transmitter,liquid Quantity, cataloged under National Stock Number 6680-01-140-8775, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Textron Aviation Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6680-01-140-8775 |
| Primary Part Number | AC6425979 |
| Item Name | Transmitter,liquid Quantity |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Pressure Rating | 0.000 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 6.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Current Type | DC |
| Voltage Rating | 36.0 VOLTS NOMINAL |
| 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 |
|---|---|
| AC6425979 | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| CB7740-51 | 3/9 Design control — primary reference Rochester Sensors, Llc |
| CB7740 | 5/9 Secondary reference Rochester Sensors, Llc |
| AC6425979 | 5/9 Secondary reference Beechcraft Corporation Dba Textron Aviation |
NSN 6680-01-140-8775 is a Transmitter,liquid Quantity, manufactured by Textron Aviation Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-140-8775 has 1 manufacturer part number on file: AC6425979 (Textron Aviation Inc).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-140-8776. Verify interchangeability with system specifications before substitution.
Key specifications for AC6425979: Pressure Rating: 0.000 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 6.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Current Type: DC; End Item Identification: U21 AIRCRAFT; Voltage Rating: 36.0 VOLTS NOMINAL. 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 6680-01-140-8775 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.