As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT 196 - DURING INITIAL CLIMB-OUT, CREW NOTED MODERATE VIBRATION FROM THE RIGHT ENGINE. CREW REDUCED THE THRUST TO IDLE. FLIGHT RETURNED TO PHL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOND A NINE BLADES DAMAGED BY FOD (ICE INGESTION). (M)