As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA-PWM - FLT 6556 - DIVERTED TO LGA DUE TO RIGHT AIR VALVE LIGHT ILLUMINATING. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE ANTI-ICE START/BLEED VALVE AND THE BLEED AIR SHUTOFF VALVE, PERFORMED THE REQUIRED OPERATIONAL CHECKS AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)