What was found
PILOT REPORTED HEARING A POP AT 11,000 FT AND IMMEDIATELY LOST MANIFOLD PRESSURE. PILOT MAKE PRECAUTIONARY LANDING WITHOUT INCIDENT. INSPECTION OF ENGINE REVEALED FORWARD CYLINDER INDUCTION MANIFOLD CROSSOVER TUBE HAD BECOME DISCONNECTED FROM NR 5 CYLINDER INTERCONNECT HOSE. IT APPEARS SECURITY CLAMP MAY BE TOO NARROW TO ADEQUATELY SECURE CROSSOVER TUBE TO NR 5 CYLINDER MANIFOLD ASSEMBLY AND INTERCONNECT HOSE. ORDERED AND INSTALLED CLAMP IAW IPC. REPLACEMENT CLAMP IS WIDER THAN CLAMP REMOVED AND WILL PROVIDE IMPROVED INTEGRITY.