LYCOMING IO540 K1A5–ATA 7314 ENGINE FUEL PUMP–Fuel pump–LOW PRESSURE. DR 611851822
During ground run, it was noted that the idle fuel pressure was very low (below red line). At higher RPM, pressure increased to normal range. Possible defective relief valve. Serviceable fuel pump was fitted.
LYCOMING O360 J2A–ATA 8520 RECIPROCATING ENGINE POWER SECTION–Fanwheel–SLIPPED. DR 611851865
Fan hub slipping on fan shaft. Fan wheel replaced.
LYCOMING TIO540 AH1A–ATA 7314 ENGINE FUEL PUMP–Fuel pump–Internally leaking. DR 611851867
Engine driven fuel pump failed, suspected defective diaphragm. Engine drive fuel pump replaced, aircraft returned to service.