What was found
LOUD BANGING NOISE COMING FROM NOSE AFTER GEAR RETRACTION.GEAR INDICATIONS NORMAL.NO ISSUES NOTED DURING GEAR EXTENSION OR TAXI. C/W EXTERNAL ZONAL INSPECTION OF THE NLG AND DOORS IAW CRJ900 AMM.NO DAMAGE/DEFECTS NOTED. DEFERRED LANDING GEAR RETRACTION SYSTEM. PERFORMED OPERATIONAL TEST OF THE LANDING GEAR EXTENSION/RETRACTION SYSTEM IAW CRJ 900 AMM OPS CHECK GOOD AT THIS TIME, THIS CLEARS MEL