The AA441CC-OH-CP is a overhauled (OH) dry air vacuum pump in the Tempest 441CC series, used in general aviation aircraft vacuum systems. It is designed as a direct replacement for legacy Airborne/standard 441CC-type pumps and provides engine-driven suction for flight instruments.

This model is part of the 400-series dry air pump family, engineered for improved durability and reduced contamination risk in aircraft vacuum systems.

Key features include:

FAA-PMA approved overhauled dry air vacuum pump
Engine-driven vacuum source for gyroscopic flight instruments
“Dry air” design (no internal oil lubrication)
Finned stator construction for improved cooling efficiency
Thermal compensating plate for stable performance under temperature variation
Wear indicator system (on 441 series architecture)
Designed to reduce oil intrusion and vane wear
Direct replacement for 441CC-series vacuum pumps
Common in IFR-equipped general aviation aircraft
Typical operating capability around light aircraft vacuum system requirements