Shockbox SB28-41-400FQI - Fuel Quantity Indicator Breakout Box BeechJet 400 (RK-1 & After)

The Shockbox SB28-41-400FQI - Fuel Quantity Indicator Breakout Box is a dedicated breakout and test interface for fuel quantity indicator circuits. It permits technicians to access the wiring between fuel probes, selector units, and cockpit indicators so they can monitor signals, inject test inputs, and verify correct readings throughout the measurement range.

This box is ideal for aircraft maintenance teams responsible for diagnosing erratic or incorrect fuel gauge indications, but it can also support laboratories and other industries using similar capacitance-based fuel quantity systems. By providing a structured breakout point, the SB28-41-400FQI reduces the need for invasive wiring interventions and helps to isolate issues quickly.

Key Features

• Fuel quantity indicator breakout box for fuel level sensing and indication systems.
• Allows non-destructive access to wiring between probes, selector electronics, and cockpit indicators.
• Supports injection of known test signals and measurement of actual system responses.
• Helps pinpoint wiring issues, faulty probes, or indicator problems in complex fuel quantity systems.
• Sturdy, portable enclosure designed for regular use in hangars and avionics shops.
• Applicable to aviation and other industries that utilize capacitive fuel quantity or similar liquid-level indication technology.