As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PASSENGER SERVICE UNIT DOOR AT ROW 26 ABC OPENED AND 4 MASK FELL DOWN DURING FLIGHT. EMERGENCY WAS DECLARED. ACCOMPLISHED INSPECTION OF PASSENGER UNIT DOOR AT SEAT 26ABC PER AMM 35-21-12. AFTER INSPECTION INSTALLED PASSENGER SERVICE UNIT AT SEAT 26ABC PER AMM 35-21-12 OK FOR SERVICE.