The RAPCO RAP216CW-OH is an overhauled FAA-PMA approved dry air vacuum/pressure pump used in general aviation aircraft pneumatic systems to power vacuum-driven gyroscopic instruments such as attitude indicators and directional gyros.

It is a carbon-vane dry pump, meaning it operates without oil lubrication. Internal carbon vanes rotate inside a precision housing to create suction airflow, which is used to maintain a stable vacuum level for cockpit instruments. The “-OH” designation indicates it is an overhauled exchange unit, rebuilt, inspected, and tested to approved aviation standards (typically returned with FAA Form 8130-3).

This pump is commonly used as a direct replacement for Airborne and Aero Accessories 212CW / 216CW series pumps, and is installed on the engine accessory section where it is mechanically driven. It is widely used in aircraft like Cessna, Piper, and other GA platforms that rely on vacuum gyros.

RAPCO overhauled units include design improvements such as an inspection port for vane wear monitoring and improved sealing to reduce oil contamination ingress, which is one of the main causes of vacuum pump failure.

As a life-limited component, it is typically replaced at defined hour intervals depending on operating conditions and manufacturer recommendations.

Key features include:

RAPCO part number: RAP216CW-OH
FAA-PMA approved overhauled vacuum/pressure pump
Dry carbon-vane design (no oil lubrication required)
Engine-driven aircraft accessory pump
Output supports vacuum gyro instruments (AI, DG, TC systems)
Replaces Airborne / Aero Accessories 212CW / 216CW series
Supplied as overhauled exchange unit (FAA 8130-3 release)
Internal Mil-Spec hard lube coating for reduced wear
Inspection port for vane wear monitoring
Improved shaft sealing against oil contamination
Used in general aviation vacuum systems (Cessna, Piper, etc.)
Life-limited component requiring periodic replacement