Nav-Aids 33410LH-125-4 Static Test Adapter for Select Boeing Aircraft

The 33410LH-125-4 static test adapter is designed to test the pilot’s and copilot’s static systems on an aircraft. It ensures that pressure readings from the static ports can be accurately checked during air data testing. By providing a secure seal at the static vent, the adapter allows technicians to validate system performance without risking air leaks or inaccurate results.

Installation is simple: depress the plunger into the center hole of the static vent and release it, allowing the adapter to lock in place. A slight rotating motion in each direction helps ensure a tight seal. This design allows for quick, reliable setup in both hangar and ramp environments.

Yes, the 33410LH-125-4 is a self-sealing unit. This means it maintains an airtight connection when in use, reducing the risk of leaks that could compromise test accuracy. The self-sealing design also makes it more efficient for repetitive use in static system checks.

Yes. When functioning as a blanking adapter, the protective cap must be tightened before installation to ensure proper sealing. This feature allows the adapter to block the opposite static vent when needed, supporting balanced and accurate testing procedures.

The protective cap doubles as a pre-test fixture, enabling technicians to verify the integrity of the adapter, hose, and tester before attaching the unit to the aircraft. This ensures that any leaks or connection issues can be identified early, reducing the risk of inaccurate test results.

Routine maintenance is minimal but essential. Before each use, inspect the plunger, seals, and protective cap for wear or debris. Keeping the adapter clean and properly stored in its case helps extend service life and ensures accurate testing.

Adapters should be stowed in the designated case compartments provided with the ADA777-612 kit or equivalent protective storage. This prevents damage to the plunger, seals, and fittings while keeping the adapter clean and ready for subsequent use.