As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OFF THE GATE RT ENGINE BLEED LIGHT CAME ON WITH EICAS MESSAGE, CREW ADVANCED POWER, LIGHT DID NOT GO OUT AND NO BLEED. FOUND MUSCLE AIR LINE ON BACK OF HPSOV HAD LOOSE UNION. SECURED UNION RAN ENGINE AT IDLE WITH 34 PSI DUCT PRESSURE AND NO BLEED MESSAGE OR BLEED LIGHT.