What was found
SUPPLEMENTAL AT FL360 WE HEARD A SUDDEN LOUD BIBRATION COMING FROM WE THINK THE NOSEWHEEL AREA. THE VIBRATION COULD BE COMPARED TO THE PLANE HAVING FLAPS 22 DEGREES AND NO GEAR DOWN. FOLLOWED QRH PROCEDURES-C/A-C/W GVI OF NOSE AREA OF AIRCRAFT NO DEFECTS NOTED AT THIS TIME SEE ITEM 1 FOR FURTHER ACTION REF AMM 05-50-00. COMPLIED WITH WORK SCOPE FOR VIBRATION HEARD FROM NOSEWHEEL AREA REMOVED AND REPLACED RH UPPER FWD ELECTRIC FAN PER AMM 21-26-02 OPS CK FAILED. REMOVED AND REPLACED RH UPPER FWD ELECTRIC FAN PER AMM 21-26-02 OPS CK GOOD. REMOVED AND REPLACED HINGE PIN FOR ACCESS PANEL DOOR 192HL. ALSO REINSTALLED ACCESS PANEL DOOR 192HL IAW AMM 52-40-02. OPS CHECK GOOD. REMOVED AND REPLACED HINGE PIN FOR ACCESS PANEL DOOR 192JR. ALSO REINSTALLED ACCESS DOOR 192JR IAW AMM 52-40-02. OPS CHECK GOOD. REMOVED AND REPLACED LH/RH RAM AIR VALVES ASSY IAW EMB140 AMM 21-25-01. OPS CHECK GOOD. PERFORMED OPERATIONAL TEST OF LANDING GEAR EXTENSION AND RETRACTION AND FOUND ALL LANDING GEAR DOORS AND ATTACHMENTS TO BE A FLUSH FIT IAW EMB 140 AMM 32-30-00 NO DEFECTS NOTED AT THIS TIME