What was found
AIRCRAFT WAS GROUNDED: EPSU (11WL) EMERGENCY LIGHT DEU-B (300RH6) UPON CIDS 1 BITE TEST FAILED. MAINTENANCE REPLACED 11WL POWER SUPPLY IAW AMM 33-51-38.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: EPSU (11WL) EMERGENCY LIGHT DEU-B (300RH6) UPON CIDS 1 BITE TEST FAILED. MAINTENANCE REPLACED 11WL POWER SUPPLY IAW AMM 33-51-38.