The Panel,fault-Function Indicator,a, cataloged under National Stock Number 1680-00-903-4381, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-00-903-4381 |
| Item Name | Panel,fault-Function Indicator,a |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DRAWING NO. 204-075-705-27 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4408-100-27 | 3/3 Design control — primary reference U.S. Government activity |
| 141-10450-027 | 5/9 Secondary reference U.S. Government activity |
| 204-075-705-27 | 1/3 Source control — Government-approved source U.S. Government activity |
NSN 1680-00-903-4381 is a Panel,fault-Function Indicator,a, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1680-00-930-5101. Verify interchangeability with system specifications before substitution.
Key specifications for 1680-00-903-4381: Overall Length: 3.720 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN; Special Features: 5.750 IN. MAX W;4.700 IN. MAX H;4 MTG HOLES 0N 2.625 X 5.365 IN. MTG CTRS IN; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DRAWING NO. 204-075-705-27. 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 1680-00-903-4381 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.