The P22201-4 is a pitot static test adapter used in aircraft maintenance to connect a pitot probe (and sometimes combined pitot/static ports) to an air data test set during ground testing and calibration.

It is a precision sealing interface tool that allows technicians to safely simulate flight conditions by applying controlled pressure to the aircraft’s pitot system without damaging the probe itself. The adapter ensures a leak-free connection between the test equipment hoses and the aircraft pitot head.

This type of adapter is commonly used in helicopters and general aviation aircraft, including models from Bell, Agusta, and similar rotorcraft platforms, and is part of standard pitot-static testing kits used in avionics maintenance.

The adapter typically includes AN-style fittings, a protective “remove before flight” tag, and a shaped interface designed to fit specific pitot probe geometries, ensuring proper sealing and repeatable test accuracy during maintenance procedures.

Key features include:

Part number: P22201-4
Type: Pitot test adapter (air data test interface tool)
Used for pitot/static system calibration and leak testing
Connects aircraft pitot probe to air data test set
Ensures sealed, leak-free pressure connection
Compatible with multiple rotorcraft and GA aircraft types (e.g., Bell, Agusta) 
Includes safety “remove before flight” tag
Uses AN-style fittings for secure connection
Prevents damage to sensitive pitot probes during testing
Used in aircraft maintenance and avionics calibration operations
Standard ground support equipment for air data system testing