What was found
AIRCRAFT WAS GROUNDED. R4 DOOR EMERGENCY POWER SUPPLY M33408 FAILED TEST. REMOVED AND REPLACED R4 DOOR M33408 POWER SUPPLY, PER AMM 33-51-06-960-803.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED. R4 DOOR EMERGENCY POWER SUPPLY M33408 FAILED TEST. REMOVED AND REPLACED R4 DOOR M33408 POWER SUPPLY, PER AMM 33-51-06-960-803.