As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD ABNORMAL POPPING NOISE DURING TAKEOFF. INTERROGATED ECU FOR FAULTS NONE FOUND, INSPECTED ALL ROTATING COMPONENTS NO DEFECT FOUND, INSPECTED FLIGHT CONTROLS UNDER PILOT AND COPILOTS SEAT AND BROOM CLOSET, NO DEFECTS FOUNDINSPECTED ENGINE AND COMPRESSOR NO DEFECTS FOUND ALL WORK PERFORMED IAW MM. NOTE: THIS AIRCRAFT IS STILL OUT OF SERVICE AT THIS TIME FOR MAINTENANCE AND TROUBLE SHOOTING.