As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SERVICE DOOR FAILED FUNCTIONAL CHECK OF THE SERVICE DOOR. WHEN OPENING DOOR TO FULL OPEN POSITION THE FULL OPEN LATCH IS STIFF AND DOES NOT ENGAGE LATCH PIN. HAVE TO MANUALLY MOVE LATCH TO HOLD DOOR OPEN. REMOVED LATCH ASSY AND CLEANED AND CHECKED BUSHINGS. NO DAMAGE NOTED AND REASSEMBLED LATCH IAW CMM 52-41-04 AND AMM 51-26-00-110-801 ENGAGED LATCH PIN PROPERLY.