Barfield 101-00814 Fuel Quantity Probe Adapter Cable for Beechcraft King Air

The Barfield 101-00814 Fuel Quantity Probe Adapter Cable connects the Barfield DC400A Digital Fuel Quantity Test Set to the fuel quantity probes in Beechcraft 1900 aircraft models. It allows technicians to accurately test probe capacitance, insulation, and system integrity during calibration and maintenance procedures. The adapter ensures reliable electrical connectivity between the test set and the aircraft's fuel sensors, facilitating precise verification of fuel quantity measurement.

The 101-00814 adapter cable is designed for Beechcraft 1900, 1900C, and 1900D aircraft equipped with Gull Airborne or Ragen Data fuel quantity systems. It is used with aircraft serial numbers UA, UB, UC, and UE, providing direct interface compatibility for these configurations. This ensures the cable delivers accurate test results tailored to each fuel system variant.

This cable is specifically engineered for use with the Barfield DC400A Digital Fuel Quantity Test Set and the 101-00802 DC400A Adapter Module. Together, these components form a comprehensive fuel quantity testing system capable of performing both wet and dry tank calibrations, indicator testing, and probe evaluations. The adapter cable is a crucial link that ensures accurate data transfer in all test modes.

The 101-00829 cable is an updated version of the 101-00814, reflecting minor revisions and manufacturing updates introduced by Barfield in later production runs. Both serve the same functional purpose for Beechcraft 1900-series aircraft, though the 101-00829 incorporates refinements made after customer feedback and procedural updates. Users may encounter either part number depending on the adapter module’s modification level.

During calibration, the 101-00814 adapter cable connects the fuel quantity probes to the Barfield DC400A test set, enabling precise capacitance measurements that determine the accuracy of the fuel volume. It helps technicians identify issues like faulty probes, wiring inconsistencies, or insulation breakdowns. By ensuring reliable signal integrity, the adapter cable is key to maintaining compliant and safe aircraft fuel measurement systems.

Technicians connect the 101-00814 cable to the probe receptacle of the DC400A test set and then attach the cable’s color-coded pins or clips to the aircraft’s probe terminals. Each pin corresponds to specific probe leads, ensuring accurate channel mapping and grounding. This configuration enables the DC400A to perform capacitance, insulation, and system wiring integrity tests with precision.

Like other precision test cables, the 101-00814 adapter should be inspected for continuity, insulation integrity, and connector wear before use. Barfield recommends periodic verification to ensure measurement accuracy and prevent false readings during testing. Damaged or out-of-tolerance cables should only be serviced or replaced by Barfield-approved repair facilities to maintain certification compliance.

While the cable itself does not require calibration, it must be verified as part of the adapter module’s annual recertification process. According to Barfield’s maintenance documentation, the connected 101-00802 adapter module has a one-year recertification interval. Testing facilities typically check the cable’s electrical integrity during that process to ensure ongoing reliability.

No, the 101-00814 adapter is specifically configured for the Beechcraft 1900, 1900C, and 1900D fuel quantity systems. Its pin assignments and connectors are designed to match these models’ probe interfaces, so it is not interchangeable with cables used for other aircraft. For different platforms, Barfield manufactures dedicated probe adapter cables specifically designed to match their respective systems.

Before connecting or disconnecting the adapter cable, technicians should ensure that fuel quantity circuit breakers are open and power is off. This prevents accidental shorting or signal interference during testing. Additionally, users should follow all safety procedures outlined in the aircraft maintenance manual for defueling, grounding, and probe handling to avoid damage or inaccurate readings.