The AA441CC is a FAA-PMA approved engine-driven dry air vacuum pump used in general aviation aircraft to supply vacuum pressure for gyroscopic flight instruments such as attitude indicators and heading gyros.

It belongs to the Tempest 441CC series, designed as a rugged, lightweight, dry-operating replacement for legacy aircraft vacuum pumps.

Key features include:

FAA-PMA certified dry vacuum pump
Engine-driven (mounts on accessory case)
Dry air design (no internal oil lubrication system)
Bi-polar rotor design for balanced operation and reduced wear
Improved airflow porting for efficiency and stability
Hardened internal components for extended service life
Designed for reduced vane sticking and contamination risk
Compatible with many Cessna, Piper, and Beechcraft aircraft vacuum systems
Typical weight around 3.5 lbs depending on configuration