The Tester,pressurized Cabin Leakage, cataloged under National Stock Number 4920-01-466-9057, 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 Hydraulics International, Inc. Dba Hydraulics International Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4920-01-466-9057 |
| Primary Part Number | 99421-100 |
| Item Name | Tester,pressurized Cabin Leakage |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| General Characteristics Item Description | SELF CONTAINED, ENCLOSED, FOUR WHEEL, PNEUMATIC TIRE, TOWABLE, TRAILER MOUNTED, DIESEL ENGINE, CABIN LEAKAGE TESTER CAPABLE OF 10-1000 CUBIC FEET PER MINUTE AT 2 - 12.5 LBS PSIG LBS |
| Functional Description | TRAILER MOUNTED LARGE AIRCRFT PRESSURIZED CABIN LEAKAGE TESTER SPECIFICATION COVERS ONLY ONE TYPE OF TESTER DESIGNATED AS AF/M32T-4 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 99421-100 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-PRF-32051 | 5/9 Secondary reference U.S. Government activity |
| 4920-0925 | 5/9 Secondary reference Hydraulics International, Inc. Dba Hydraulics International Inc |
NSN 4920-01-466-9057 is a Tester,pressurized Cabin Leakage, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-466-9057 has 1 manufacturer part number on file: 99421-100 (Hydraulics International, Inc. Dba Hydraulics International Inc).
Key specifications for 99421-100: Overall Height: 81.000 INCHES NOMINAL IN; General Characteristics Item Description: SELF CONTAINED, ENCLOSED, FOUR WHEEL, PNEUMATIC TIRE, TOWABLE, TRAILER MOUNTED, DIESEL ENGINE, CABIN LEAKAGE TESTER CAPABLE OF 10-1000 CUBIC FEET PER MINUTE AT 2 - 12.5 LBS PSIG LBS; Overall Length: 127.000 INCHES NOMINAL IN; Overall Width: 64.000 INCHES NOMINAL IN. 2 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.
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.