As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED A L ENG BLEED CAUTION MESSAGE. THIS CAUSED THE CREW TO LOSE A/I ABILITY. THEY WERE INSTRUCTED TO HOLD FOR THE PHL GDP BUT COULD NOT DUE TO ICING CONDITIONS AT THE HOLD POINT. THE CREW DECLARED AN EMERGENCY IN ORDER TO AVOID THE HOLD AND LAND IN PHL. LANDED SAFELY WITH NO FURTHER INCIDENT. MX REMOVED AND REPLACED L/H HIGH PRESSURE RELEIF VALVE IAW C700 AMM. OPS CHECK GOOD, NO LEAKS NOTED.