What was found
WHILE SITTING AT THE GATE, LOADING PAX, ALL THE O2 MASKS DROPPED IN A/C. REPLACED PCB NR 4 IN JB10. OPERATIONAL CHECK GOOD, PN E520004-704, SN OFF E0270.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE SITTING AT THE GATE, LOADING PAX, ALL THE O2 MASKS DROPPED IN A/C. REPLACED PCB NR 4 IN JB10. OPERATIONAL CHECK GOOD, PN E520004-704, SN OFF E0270.