As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURE CYLINDER REGULATOR VALVE FOR THE EMERGENCY EXTENSION OF THE LANDING GEAR AND EMERGENCY BRAKES FOR THE AIRCRAFT HAD A CRACK IN IT. FAILURE OF THE VALVE DUE TO CRACKING WOULD RESULT IN LOSS OF PRESSURE TO EXTEND THE LANDING GEAR IN THE EMERGENCY EXTENSION MODE OR FAILURE OF THE WHEEL BRAKES TO OPERATE IN THE EMERGENCY MODE.