What was found
WHILE OPERATING PACKS ON GROUND WITH APU AIR, CABIN FILLED WITH SMOKE. OPERATED PACKS FROM APU FOR OVER AN HOUR AND NO ODOR NOTED. SUSPECT DE-ICING FLUID. CHECKED APU AND FLOW MULTIPLIER INLETS, NO RESIDUAL FLUID NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE OPERATING PACKS ON GROUND WITH APU AIR, CABIN FILLED WITH SMOKE. OPERATED PACKS FROM APU FOR OVER AN HOUR AND NO ODOR NOTED. SUSPECT DE-ICING FLUID. CHECKED APU AND FLOW MULTIPLIER INLETS, NO RESIDUAL FLUID NOTED.