What was found
AIRCRAFT WAS GROUNDED. EMERGENCY POWER SUPPLY UNIT 10WL FAILED DURING TEST. R & R POWER SUPPLY IAW AMM 31-51-00. OPS CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED. EMERGENCY POWER SUPPLY UNIT 10WL FAILED DURING TEST. R & R POWER SUPPLY IAW AMM 31-51-00. OPS CHECK NORMAL.