The Block Locating Fo, cataloged under National Stock Number 6615-00-453-2525, 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 Bae Systems (operations) Limited. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Block Locating Fo |
| FSC / FSG | 6615 — Automatic Pilot Mechanisms and Airborne Gyro Components (FSG 66) |
| Manufacturers | Bae Systems (operations) Limited (CAGE K0656) |
| Parameter | Value |
|---|---|
| NSN | 6615-00-453-2525 |
| Primary Part Number | D2440-7661-001 |
| Item Name | Block Locating Fo |
| FSC / FSG | 6615 / 66 — Automatic Pilot Mechanisms and Airborne Gyro Components |
| Manufacturer | Bae Systems (operations) Limited |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| D2440-7661-001 PRIMARY | Bae Systems (operations) Limited (GBR) |
| Reference | Meaning |
|---|---|
| 6615-99-199 | 6/9 Informative reference only U.S. Government activity |
NSN 6615-00-453-2525 is a Block Locating Fo, manufactured by Bae Systems (operations) Limited, classified under FSC 6615, Automatic Pilot Mechanisms and Airborne Gyro Components. Status: active.
NSN 6615-00-453-2525 has 1 manufacturer part number on file: D2440-7661-001 (Bae Systems (operations) Limited).
1 possible match (shared part number, not a government interchangeability claim): 5360-00-453-2528. Verify interchangeability with system specifications before substitution.
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 6615-00-453-2525 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.