The Fixture,engine Maintenance,aircr, cataloged under National Stock Number 4920-01-187-4102, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-187-4102 |
| Primary Part Number | AD31781-1 |
| Item Name | Fixture,engine Maintenance,aircr |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Functional Description | TEST STAND,UNIFIED FUEL CONTROL |
| 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 |
|---|---|
| AD31781-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4920-01-187-4102 is a Fixture,engine Maintenance,aircr, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-187-4102 has 1 manufacturer part number on file: AD31781-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for AD31781-1: Special Features: ORIG DWG NAME-FIXTURE SIMULATOR RCVV; REAR COMPRESSOR VARIABLE VANE SIMULATOR ASSEMBLY 1; ALUMINUM MOUNTING PLATE PER QQ-A-200/8 1; ALUMINUM PLATE PER QQ-A-200/8 1;COUPLING SHAFT, CORROSION RESISTANT STEL PER QQ-S-763 1;BRACKET 1;SIDE PLATE 3;TOP PLATE 1;RESOLVER 1;MOTOR MOUNT CLEAT 2;FINE PITCH RACK 1;SPUR GEAR 1; Functional Description: TEST STAND,UNIFIED FUEL CONTROL; End Item Identification: F15/F16 ACFT AGE. 1 specification is 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.