Nav-Aids P75701M2-3 Pitot Test Adapter for Boeing 737 & Hawker 4000 Aircraft

Boeing 737NG Series aircraft require three adapters to test all pitot systems simultaneously. The Hawker Horizon 4000 requires two adapters to interface with its dual pitot probe configuration. Ensuring the correct quantity helps maintain proper system isolation and avoids cross-bleed during testing.

Yes. This pitot test adapter is included in the Nav-Aids ADA737-678 Air Data Accessories Kit for Boeing 737NG and BBJ aircraft, as well as the ADA4000-945HT Kit for the Hawker Horizon 4000. Inclusion in these OEM-recognized kits helps ensure compatibility and simplifies the provisioning of test equipment for mixed fleets.

The P75701M2-3 interfaces with pitot probe 851FJ1 on Boeing 737NG-series aircraft and pitot probe 0851JE on Hawker Horizon 4000 aircraft. These probe types are mounted on the nose of the aircraft and are standard to their respective platforms. The adapter provides a secure seal to ensure accurate leak-free pitot testing.

Yes! When installed correctly, the P75701M2-3 allows technicians to isolate and test each pitot system separately or simultaneously, depending on the aircraft model. This capability enhances troubleshooting efficiency and ensures the accurate verification of dual- or triple-redundant systems.

The P75701M2-3 works with most professional-grade pitot-static test sets used in airline, MRO, and business aviation maintenance environments. Its standard Nav-Aids interface design ensures compatibility with equipment from major manufacturers such as Druck/Fluke, Laversab, and DMA. Always verify your specific test set connections to ensure proper fit.

Routine cleaning of the mating surfaces and seals helps maintain airtight performance. Technicians should avoid using harsh solvents that may damage O-rings or elastomer components. Storing the adapter in its protective case when not in use prevents accidental drops and contamination that could affect accuracy.

Nav-Aids typically recommends dry installation, meaning lubrication is not required unless specified in their service bulletins. Over time, seals or O-rings may need to be replaced, depending on the frequency of usage and environmental conditions. Regular inspection helps ensure reliable sealing during pitot-static testing.

By ensuring a precise seal on the aircraft’s pitot probe, the P75701M2-3 prevents leaks that could lead to inaccurate readings or false system responses. Its ability to isolate each system minimizes the risk of inadvertently pressurizing multiple channels at once. This helps technicians verify airspeed and altitude systems with confidence.

The adapter should be stored in a clean, padded case – ideally, the protective case supplied with Nav-Aids air data kits. Keeping it away from excessive heat, moisture, and contaminants helps prolong seal integrity and calibration accuracy. Proper storage also prevents accidental impact damage to the adapter body.

Only aircraft equipped with the specific pitot probe models (851FJ1 or 0851JE) are considered compatible. Using the adapter on non-listed aircraft may result in improper sealing or inaccurate testing. Technicians should always reference probe part numbers or consult the Aircraft Maintenance Manual (AMM) before use.