Nav-Aids PSS59101-4-6-6 Pitot & Dual Static Test Adapter – Select Sikorsky Helicopters

The Nav-Aids PSS59101-4-6-6 is a precision pitot and dual static test adapter engineered for use during pitot-static system testing on Sikorsky Black Hawk helicopters. It is designed to interface directly with the aircraft's pitot probes, allowing technicians to connect a pneumatic test unit and verify the integrity of the airspeed, altitude, and vertical speed systems. The adapter is a trusted tool for military and civilian MRO operations, maintaining UH-60 and HH-60 series rotorcraft.

The PSS59101-4-6-6 is specifically designed for the Sikorsky UH-60L, UH-60A, and HH-60D helicopters – variants of the iconic Black Hawk and Nighthawk platforms widely operated by the U.S. Army and other military branches. The UH-60A and UH-60L are utility tactical transport helicopters, while the HH-60D is a combat search-and-rescue variant; all share compatible pitot probe configurations. Technicians maintaining any of these airframes can rely on this adapter for pitot-static system certification.

The PSS59101-4-6-6 is designed to fit the 856HM 7 and 8 pitot probes located on the nose of the UH-60 and HH-60 series helicopters. A proper fit is essential to achieving the airtight seal required for accurate pitot-static testing – any gap or misalignment can compromise test results and require retesting. Always confirm probe model compatibility before beginning a test sequence.

Yes. Once installed, the PSS59101-4-6-6 can isolate and test the pitot system and each static system either separately or simultaneously, giving maintenance technicians flexibility in their test procedures. Testing systems independently is useful for isolating a suspected fault in one channel without disturbing the other, while simultaneous testing is ideal for full air data system certification. This dual-mode capability makes the adapter well-suited for both routine maintenance checks and fault-finding scenarios.

The pitot-static system is a flight-critical system on any aircraft, supplying airspeed, altitude, and vertical speed data to both the pilot and the flight management systems. On the UH-60 and HH-60 series helicopters – which operate in demanding military environments including low-level flight, nap-of-the-earth missions, and combat search and rescue – a reliable, well-maintained air data system is essential for crew safety. Regular pitot-static testing using purpose-built adapters like the PSS59101-4-6-6 ensures the system meets airworthiness standards and performs accurately under all operating conditions.

Yes. While the PSS59101-4-6-6 adapter is sold individually, it is also included as a core component of the Nav-Aids ADA60A-835 Air Data Accessories Kit, which provides a complete pitot-static testing solution for Sikorsky Black Hawk and Nighthawk helicopters. The full kit bundles the adapter, hose assemblies, pre-test probes, lubricating fluid, and seal kit needed to test the air data system at the source. For shops looking for an all-in-one solution, the ADA60A-835 kit eliminates the need to source components separately.

Like all pitot-static test adapters, the PSS59101-4-6-6 should be inspected before each use for signs of seal wear, cracking, or contamination that could compromise the pneumatic connection. The internal seals and spacers are wear items that require periodic replacement, depending on usage frequency and storage conditions. Keeping the adapter clean, properly stored, and maintained with fresh seals is the best way to ensure consistent, accurate test results throughout the equipment's life.

The SK101 Seal and Spacer Kit is a purpose-built replacement parts kit that provides all the components necessary to replace the interior seals and spacers of the PSS59101-4-6-6 adapter. It should be used whenever the adapter shows signs of leakage during pre-testing, when seals appear worn or damaged upon inspection, or as part of a scheduled preventive maintenance program. Using genuine Nav-Aids replacement components ensures the adapter continues to perform to its original specification – using non-OEM parts risks compromising seal integrity and test accuracy.

The PSS59101-4-6-6 adapter is designed to work in conjunction with pitot and static hose assemblies that connect to the pneumatic output of a pitot-static test unit – such as those in the Nav-Aids ADA60A-835 kit or compatible third-party testers. The pitot hose connects to the pitot inlet of the adapter, while the static hose assembly attaches to the static outlets, completing the pneumatic circuit between the test set and the aircraft's air data system. Always pre-test all hoses and adapters before connecting to the aircraft to confirm the test circuit is leak-free.