What was found
ON APRIL 19, FLYING BACK TO LGU, THE ENGINE SUDDENLY BEGAN VIBRATING AND LOST A LOT OF POWER. COULD NOT MAINTAIN ALTITUDE, LANDED IN A FIELD. MECHANIC CAME AND FOUND THAT THE ROCKER BOSSES OF CYL NR 3 HAD FAILED. INSTALLED AN NEW CYLINDER ASSY AND FLEW IT BACK. WHERE THE OTHER 3 CYLINDERS WERE REPLACED TO PREVENT RECURRENCE. PALANE WAS UNDAMAGED.