As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 293 - AFTER TAKEOFF SMOKE FILLED CABIN AND COCKPIT WITH ODOR AND LIGHT HAZY SMOKE. FLIGHT RETURNED TO LGA. FOUND AIR COND PACK COALESCER BAGS CLOGGED BY DEBRIS FROM BIRD INJESTION. PERFORMED PACK BURNOUT AND REPLACED BOTH COALESCER BAGS. PERFORMED ECS HEALTH CHECK. (M)