The Heater,aircraft Engine Maintenan, cataloged under National Stock Number 4920-01-024-5654, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-024-5654 |
| Primary Part Number | PWA57401 |
| Item Name | Heater,aircraft Engine Maintenan |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Reference Data and Literature | T.O. 2J-F100-94; T.O. 33D4-6-511-1 |
| Functional Description | USED IN THE REMOVAL/INSTALLATION OF NO. 4 FRONT BEARING SEAL ASSY |
| 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 |
|---|---|
| PWA52890C | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| PWA57401 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| PWA52890 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 4920-01-024-5654 is a Heater,aircraft Engine Maintenan, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-024-5654 has 2 manufacturer part numbers on file: PWA52890C (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), PWA57401 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA57401: Reference Data and Literature: T.O. 2J-F100-94; T.O. 33D4-6-511-1; Special Features: 14.000 IN. DIA, 9 IN. H, APPX 18 LBS LBS; Functional Description: USED IN THE REMOVAL/INSTALLATION OF NO. 4 FRONT BEARING SEAL ASSY. 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.