As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING A PRELIMINARY ACCEPTANCE BENCH TEST, RAM AIR TURBINE ACTUATOR EXPERIENCED CATASTROPHIC CYLINDER FAILURE. FAILURE OCCURRED IN SHOP, NOT ON-WING. ACTUATOR CYLINDER RUPTURED, SPLITTING THE CYLINDER WALL 8 INCHES LONG X 1.1 INCHES IN WIDTH. THE RUPTURE OCCURRED AT 2600 PSI (400 PSI LESS THAN TEST/OPERATING PRESSURE).