The Control Unit,navigation Set, cataloged under National Stock Number 6605-01-077-3426, is classified within Federal Supply Class 6605 (Navigational Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is L3harris Interstate Electronics Corporation. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6605-01-077-3426 |
| Primary Part Number | 591-3-000-1 |
| Item Name | Control Unit,navigation Set |
| FSC / FSG | 6605 / 66 — Navigational Instruments |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Reference Data and Literature | T.O. 5N25-3-3 |
| Functional Description | PERFORMS THE TASK OF SELECTIVELY INTERCONNECTING THE VARIOUS ELECTRONIC NAVIGATION SYSTEMS ABOARD THE AIRCRAFT; CONTAINS 2 INFORMATION LIGHTS, VERNAV AND FAULT, AND 9 PUSHBUTTONS HAVING THE FOLLOWING DESIGNATIONS: PRI COMPT, AUX COMPT, RADAR, VOR/OLS; ILS; TACAN; NAV AIDS OFF; HDG AND FLT DIR TEST |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 591-3-000-1 PRIMARY | L3harris Interstate Electronics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4K90027-111A | 7/1 Vendor item drawing reference U.S. Government activity |
| 591-3-000 | 5/9 Secondary reference L3harris Interstate Electronics Corporation |
NSN 6605-01-077-3426 is a Control Unit,navigation Set, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 6605, Navigational Instruments. Status: active.
NSN 6605-01-077-3426 has 1 manufacturer part number on file: 591-3-000-1 (L3harris Interstate Electronics Corporation).
Key specifications for 591-3-000-1: Reference Data and Literature: T.O. 5N25-3-3; Special Features: PANEL LIGHTING POWER 3.5 VA, INSTRUMENT SOURCE POWER 28 VDC; WIDTH 8 INCHES, HEIGHT 3.250 INCHES, DEPTH 5.250 INCHES; WEIGHT 5 LBS; 3 CONNECTORS VDC; Functional Description: PERFORMS THE TASK OF SELECTIVELY INTERCONNECTING THE VARIOUS ELECTRONIC NAVIGATION SYSTEMS ABOARD THE AIRCRAFT; CONTAINS 2 INFORMATION LIGHTS, VERNAV AND FAULT, AND 9 PUSHBUTTONS HAVING THE FOLLOWING DESIGNATIONS: PRI COMPT, AUX COMPT, RADAR, VOR/OLS; ILS; TACAN; NAV AIDS OFF; HDG AND FLT DIR TEST; Part Name Assigned by Controlling Agency: NAVIGATION SELECTOR PANEL. 2 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6605-01-077-3426 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.