As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ADHESIVE USED TO INSTALL THE KALREZ PACKING IN THE GUIDE ASSY FAILED TO PROVIDE GOOD ADHESION ALLOWING THE PACKING TO SEPARATE AWAY FROM THE ECCOBOND 104 ADHESIVE CAUSING THE OVERPRESSURE SWITCHER NOT TO OPERATE WITHIN LIMITS. POSSIBLE CAUSE, POOR ADHESION BETWEEN THE PACKING AND ECCOBOND 104. THE ADHESIVE MAY NOT BE COMPATIBLE WITH THE KALREZ PACKING MATERIAL. (X)