The Test Set,air Data, cataloged under National Stock Number 4920-01-506-6029, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Barfield Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-506-6029 |
| Primary Part Number | 1811HA-665 |
| Item Name | Test Set,air Data |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Barfield Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1811HA-665 PRIMARY | Barfield Inc (USA) |
| Reference | Meaning |
|---|---|
| 1811H-665 | 5/9 Secondary reference Barfield Inc |
NSN 4920-01-506-6029 is a Test Set,air Data, manufactured by Barfield Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-506-6029 has 1 manufacturer part number on file: 1811HA-665 (Barfield Inc).
Key specifications for 1811HA-665: Overall Height: 9.760 INCHES NOMINAL IN; Overall Width: 15.400 INCHES NOMINAL IN; Special Features: PORTABLE; SELF-CONTAINED; TESTS AND CALIBRATES ACFT PITOT-STATIC SYSTEMS; PERFORMS CALIBRATION AND STATIC PITOT STATIC LEAK TESTS; INCLUDES VACUUM AND PRESSURE HAND PUMPS; AIRSPEED INDICATORS - 20 TO 250 KNOT RANGE; VERTICAL SPEED INDICATORS - 6000 FEET/MIN RANGE; ALTIMETERS - SENSITIVE, 3 PTR., 50,000 FEET INHG/MB BARO SCALE; FIBERGLASS CARRYING CASE FT. 0 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 4920-01-506-6029 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.