The Tester,pressurized Cabin Leakage, cataloged under National Stock Number 4920-00-591-6985, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-591-6985 |
| Item Name | Tester,pressurized Cabin Leakage |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | C/O A PNEUMATIC WHEEL MOUNTED CHASIS,CABINET ASSY; PRESSURE AND RELIEF VALVES,BLOWER,SMALL AIR COMPRESSOR,CONTROL PANEL AND THE NECESSARY ADAPTERS AND HOSES TO INTERFACE WITH THE AIRCRAFT; AIR SUPPLY SYSTEM,0.0-400.0 CFM AT 2.0-14.5 PSIG; CANOPY AIR SUPPLY,1.0 CFM AT 65.0 PSIG; 220.0-440.0 VAC,3-PHASE,60.0 HZ VAC |
| Reference Data and Literature | T.O. 33D2-28-12-1,33A4-4-23-1 |
| Functional Classification | JJ-7.1 |
| Entry Date | 75-07-18 |
| Functional Description | SUPPLIES PRESSURIZED AIR UNDER ANY COMBINATION OF PRESSURES AND FLOWS WITHIN ITS LIMITS FOR CHECKOUT OF AIRCRAFT PRESSURIZED CABINS AND CANOPY SEALS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 89404 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4920-00-591-6985 is a Tester,pressurized Cabin Leakage, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-00-591-6985: General Characteristics Item Description: C/O A PNEUMATIC WHEEL MOUNTED CHASIS,CABINET ASSY; PRESSURE AND RELIEF VALVES,BLOWER,SMALL AIR COMPRESSOR,CONTROL PANEL AND THE NECESSARY ADAPTERS AND HOSES TO INTERFACE WITH THE AIRCRAFT; AIR SUPPLY SYSTEM,0.0-400.0 CFM AT 2.0-14.5 PSIG; CANOPY AIR SUPPLY,1.0 CFM AT 65.0 PSIG; 220.0-440.0 VAC,3-PHASE,60.0 HZ VAC; Reference Data and Literature: T.O. 33D2-28-12-1,33A4-4-23-1; Functional Classification: JJ-7.1; Entry Date: 75-07-18. 5 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.