What was found
LEFT BLEED AIR DUCT WARNING MESSAGE, FOLLOWED BY LOSS OF PRESSURIZATION. ACFT RETURNED TO DEPARTURE. EMERGENCY DECLARED. R & R AILERON IAW AMM 30-12-12, SYS CHECKED GOOD. NO DEFECTS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT BLEED AIR DUCT WARNING MESSAGE, FOLLOWED BY LOSS OF PRESSURIZATION. ACFT RETURNED TO DEPARTURE. EMERGENCY DECLARED. R & R AILERON IAW AMM 30-12-12, SYS CHECKED GOOD. NO DEFECTS NOTED.