What was found
DURING TAXI AIRCRAFT EXPERIENCED SMOKE IN THE CABIN. LEFT PACK WAS INOPERABLE ON THE GROUND. AIRCRAFT RETURNED TO THE GATE. *S/D* RT PACK FAN AIR COOLING DOOR DID NOT OPEN ON GROUND. REPLACED FAN COOLING DOOR ACTUATOR.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAXI AIRCRAFT EXPERIENCED SMOKE IN THE CABIN. LEFT PACK WAS INOPERABLE ON THE GROUND. AIRCRAFT RETURNED TO THE GATE. *S/D* RT PACK FAN AIR COOLING DOOR DID NOT OPEN ON GROUND. REPLACED FAN COOLING DOOR ACTUATOR.