The Tester,pressurized Cabin Leakage, cataloged under National Stock Number 4920-00-601-6926, 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 L-3 Communications Electronicsystems Incdba L-3 Electronic System Services. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4920-00-601-6926 |
| Primary Part Number | 704500 |
| Item Name | Tester,pressurized Cabin Leakage |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | L-3 Communications Electronicsystems Incdba L-3 Electronic System Services |
| 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 | 90-04-19 |
| Functional Description | SUPPLIES PRESSURIZED AIR UNDER ANY COMBINATION OF PRESSURES AND FLOWS WITHIN ITS LIMITS FOR CHECKOUT OF ACFT 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 |
| Part Number | Manufacturer |
|---|---|
| TCE401 | L-3 Communications Electronicsystems Incdba L-3 Electronic System Services (CAN) |
| 704500 PRIMARY | L-3 Communications Electronicsystems Incdba L-3 Electronic System Services (CAN) |
| Reference | Meaning |
|---|---|
| AFM24T3 | 5/9 Secondary reference U.S. Government activity |
| MILT26139 | 4/1 Identification reference U.S. Government activity |
NSN 4920-00-601-6926 is a Tester,pressurized Cabin Leakage, manufactured by L-3 Communications Electronicsystems Incdba L-3 Electronic System Services, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-601-6926 has 2 manufacturer part numbers on file: TCE401 (L-3 Communications Electronicsystems Incdba L-3 Electronic System Services), 704500 (L-3 Communications Electronicsystems Incdba L-3 Electronic System Services).
1 possible match (shared part number, not a government interchangeability claim): 4920-01-006-5238. Verify interchangeability with system specifications before substitution.
Key specifications for 704500: 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: 90-04-19. 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.