What was found
IN THE AIR AND ON THE GROUND WITH THRUST LEVERS AT IDLE, BOTH PACKS OFF LINE AND UNABLE TO MAINTAIN PRESSURIZATION. REMOVED AND REPLACED LEFT AND RIGHT PRESSURE REGULATING SHUTOFF VALVE FILTERS IAW AMM SUP 0639, OPS CHECK GOOD. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IN THE AIR AND ON THE GROUND WITH THRUST LEVERS AT IDLE, BOTH PACKS OFF LINE AND UNABLE TO MAINTAIN PRESSURIZATION. REMOVED AND REPLACED LEFT AND RIGHT PRESSURE REGULATING SHUTOFF VALVE FILTERS IAW AMM SUP 0639, OPS CHECK GOOD. (M)