What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON TAKE OFF NOSE WHEEL VIBRATION HEARD AND FELT A SEVERE VIBRATION UNDER THE FLIGHT DECK, VIBRATION DID NOT QUIET DOWN; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT CUN. AIRCRAFT ARRIVED AT POSITION WITH EXTERNAL POWER ACCESS DOOR OPEN, PERFORMED VIBRATION CONDITIONAL INSPECTION, PER AMM 05-51-67-280-801 BY FIG 201 PERFORMED STEP C 2(B) WERE EXAMINED DOORS AND PANELS, EXTERNAL POWER ACCESS DOOR WAS CORRECTLY CLOSED, PER AMM 52-49-02-400-801 STEP I, NO DAMAGE FOUND ON DOOR OR LATCHES. PERFORMED NLG INSPECTION, PER AMM 32-21-00-200-801, NO DAMAGE OR DISCREPANCIES NOTED, NO FAULT FOUND.