As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLEANERS REPORT THEY ARE UNABLE TO OPEN THE MAIN ENTRY DOOR. // SIGNOFF// LUBED HOOKS AND PINS AS WELL AS VENT DOOR PUSH ROD. PERFORMED TEN OPS CHECKS OF DOOR HANDLE WITH NO FURTHER DEFECTS NOTED. DISCUSSED FINDINGS WITH MCC AND MCC ADVISED THEY WERE GOOD WITH MOVING FORWARD WITH, RELEASE, ALL WORK DONE WITH REFERENCE TO CHALLENGER 650 AMM 52-11-07.