What was found
PILOTS RETURNED FROM THEIR FLIGHT WITH A SQUAWK DETAILING THAT FUEL PRESSURE INDICATOR BEGAN DISPLAYING A NULL VALUE. THIS WAS DUE TO A PREMATURE FAILURE OF THE UMA FUEL PRESSURE SENDER, P/N T1EU100D, S/N B0197, IN THE RIGHT NACELLE. IT ONLY LASTED 103 HOURS OF OPERATION BEFORE FAILING TO TRANSMIT A SIGNAL TO THE INSTRUMENT. THIS HAS BEEN AN ONGOING PROBLEM WITH THIS SPECIFIC PART/MODEL OF SENDER. I SPECULATE THAT THE FUEL IS DETERIORATING THE COMPONENT'S DIAPHRAGM. OUR STAFF HAVE LOOKED FOR POSSIBLE SUBSTITUTIONS, BUT HAVE BEEN TOLD BY GARMIN THAT THERE ARE NO ALTERNATIVES FOR THIS SPECIFIC COMPONENT WITH THE USE OF THE DIGITAL DISPLAY MODEL WE CURRENTLY HAVE INSTALLED IN THE AIRCRAFT.