As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 DOOR RELEASE LATCH STUCK WITH DOOR OPEN. ACFT GROUNDED. LUBRICATED THE L1 DOOR HOLD OPEN LATCH, BUT STILL STICKS. A LOUD POP WHILE CLOSING DOOR FROM UPPER HINGE AREA. L1 DOOR GUIDE ARM ATTACH FITTING LOOSE. TORQUED THE FITTING. NO MORE POPPING IAW CMM 52-16-12 PG 702. REMOVED AND REPLACED GUIDE ARM PIN. LATCH CHECKED GOOD.