As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN MAIN CABIN DOOR IS CLOSED ON THE PRECATCH (NOT LOCKED), DOOR WILL NOT RELEASE/OPEN USING THE PRECATCH RELEASE LEVER OR BUTTON. CLEANED AND LUBRICATED THE PRE-CATCH PLUNGER AND OPS CHECKED THE PRE-CATCH AND IT IS OPERATING AS IT SHOULD REF CE560XL AMM 12-21-13