The Controller,engaging,automatic Pi, cataloged under National Stock Number 1680-01-014-1879, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-01-014-1879 |
| Primary Part Number | 4020235-901 |
| Item Name | Controller,engaging,automatic Pi |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Honeywell International Inc. Dba Honeywell International |
| Status | ACTIVE |
| General Characteristics Item Description | 28VDC OPERATING POWER RQMT,8.0 IN. LG,5.75 IN. W,3.0 IN. H VDC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 4020235-901 PRIMARY | Honeywell International Inc. Dba Honeywell International (USA) |
| Reference | Meaning |
|---|---|
| C-9548A/ASW-40A | 5/1 Secondary reference U.S. Government activity |
| 128SCAV123-603 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 128SCAV123-603 | 7/9 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 1680-01-014-1879 is a Controller,engaging,automatic Pi, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-014-1879 has 1 manufacturer part number on file: 4020235-901 (Honeywell International Inc. Dba Honeywell International).
Key specifications for 4020235-901: General Characteristics Item Description: 28VDC OPERATING POWER RQMT,8.0 IN. LG,5.75 IN. W,3.0 IN. H VDC. 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 1680-01-014-1879 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.