What was found
FOR A TEST FLIGHT AFTER CHECK-C, DURING TAKEOFF AND INITIAL CLIMB THE COCKPIT AND CABIN FILLED WITH SMOKE. SHUTDOWN THE APU AND LANDED. REPLACED THE APU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FOR A TEST FLIGHT AFTER CHECK-C, DURING TAKEOFF AND INITIAL CLIMB THE COCKPIT AND CABIN FILLED WITH SMOKE. SHUTDOWN THE APU AND LANDED. REPLACED THE APU.