Goodbye outdated and unreliable fuel level sender, hello modern and accurate digital version. CIES Corp., maker of a new device that sends fuel level information to the panel through a digital mechanism, says it has earned TSO approval from the FAA.
More than 1,200 units are already flying, most of them from OEMs such as Cirrus. The TSO will make it easier for owners to retrofit the device on aircraft already in the fleet. According to a company representative, STCs are in the works, although it remains unclear if they will be eligible for approval through the master list process, or if they will have to get an approved install on each make and model.
CIES says its float-type digital senders show tank level to an accuracy of within 2 percent, and that there is no risk of electrical issues in the tank. Furthermore, the senders will interact with the JPI 900 electronic engine management system to show quantity.