As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PUSHBACK TO RELOCATE A/C, HEARD 2 LOUD BANGS FROM NOSE GEAR. FOUND TOW BAR EXTENDED BEYOND LIMITS AND SHEAR PIN BROKEN AND DAMAGE TO LOWER GEAR. REPLACED NOSE GEAR TOW FITTING PER AMM 32-21-12/401. INSPECTED NOSE WHEEL SYSTEM PER AMM 32-51-00-735-072. NO OTHER DISCREPANCIES FOUND WITH GREASE PLATES USED. ALSO, PERFORMED NOSE LANDING GEAR EXCEEDENCE PER 05-51-29/201. NO DISCREPANCIES.