As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAN - DURING CLIMB-OUT, CREW OBSERVED LEFT TOP COWL WAS DETACHED FROM INBOARD LATCHES (OUTBOARD LATCHES REMAINED LATCHED). CREW ELECTED AN AIR TURN BACK AND MADE AN UNEVENTFUL LANDING. MAINTENANCE REPLACED INBOARD, AFT COWL LATCH AND RESECURED COWL. (M)