The Gyroscope,displacement, cataloged under National Stock Number 6615-01-021-3681, is classified within Federal Supply Class 6615 (Automatic Pilot Mechanisms and Airborne Gyro Components) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6615-01-021-3681 |
| Primary Part Number | 156555-01-02 |
| Item Name | Gyroscope,displacement |
| FSC / FSG | 6615 / 66 — Automatic Pilot Mechanisms and Airborne Gyro Components |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Design Type | CAGEABLE |
| Gimbal Torque Application Method | AC TORQUE MOTOR |
| Gimbal Quantity | 13 |
| Wheel Power Method | ELECTRIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 156555-01-02 PRIMARY | Ge Aviation Systems Llc (USA) |
| 7901A | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| CN-1466/ASN-129 | 5/2 Secondary reference U.S. Government activity |
NSN 6615-01-021-3681 is a Gyroscope,displacement, manufactured by Ge Aviation Systems Llc, classified under FSC 6615, Automatic Pilot Mechanisms and Airborne Gyro Components. Status: active.
NSN 6615-01-021-3681 has 2 manufacturer part numbers on file: 156555-01-02 (Ge Aviation Systems Llc), 7901A (Ge Aviation Systems Llc).
Key specifications for 156555-01-02: Overall Height: 5.500 INCHES NOMINAL IN; Design Type: CAGEABLE; Overall Length: 10.360 INCHES NOMINAL IN; Gimbal Torque Application Method: AC TORQUE MOTOR. 4 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 6615-01-021-3681 has DEMIL Code D. 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.