FUEL QUANTITY PROBE (P/N 128-389001-3) - Serviceable
P/N: 128-389001-3
Category: Sensors
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| Serviceable | 6 Available |
Product Description
The 128-389001-3 is a capacitance-type fuel quantity probe installed directly in aircraft fuel tanks. This sensor converts fuel height into an electrical signal transmitted to the flight deck fuel quantity indicator or computer. The probe connects to a signal conditioner that processes the capacitance measurement and displays remaining fuel quantity to the flight crew.
Installation requires tank access and calibration per the aircraft maintenance manual to ensure accurate fuel readings across the full tank range. Compliance with FAA TSO-C55a standards ensures reliable operation in general and commercial aviation fuel systems.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the FUEL QUANTITY PROBE (P/N 128-389001-3)?
The 128-389001-3 is a capacitance-type fuel quantity probe installed directly in aircraft fuel tanks. This sensor converts fuel height into an electrical signal transmitted to the flight deck fuel quantity indicator or computer.
Is the 128-389001-3 calibrated and ready to install?
Calibration status depends on the condition. Overhauled instruments come fully calibrated with an 8130-3 tag. The FUEL QUANTITY PROBE is available in: Serviceable. Contact us to confirm calibration status for your selected condition.
Can the 128-389001-3 be used as a direct replacement in my aircraft?
The FUEL QUANTITY PROBE is designed as a form-fit-function replacement. Verify the part number against your aircraft's Illustrated Parts Catalog (IPC) and instrument panel layout to confirm compatibility before ordering.
Do you offer instrument exchange programs for the 128-389001-3?
Yes, we offer core exchange programs on select instruments. Send your unserviceable unit and receive a discount on the replacement. Call (904) 998-9101 or submit an RFQ to check exchange availability for the 128-389001-3.
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