What was found
LANDING GEAR WOULD NOT RETRACT. HEARD LOUD THUMP FROM NOSE AREA CLIMBING THRU 19000'. TROUBLESHOT, REPACKED NOSE GEAR STRUT ASSY IAW CE750 MM CHAP 32-20-02 AND C/W FUNCTION CK OF GEAR SYSTEM IAW CHAP 32-42-00 OF CE 750 MM. ALL OPS CHECKS GOOD, NOSE GEAR WAS ALSO SERVICED IAW CHAP 12-10-38 OF CE 750 MM, LEAK CHECKS GOOD.