As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3225 DISC: OXYGEN PANEL MASK DEPLOYED / LOCATIONS:401. PANEL OPENED COMPLETELY AFTER TAKEOFF MASK DID NOT ACTUALLY DEPLOY. C/A: VERIFIED O2 GENERATOR DID NOT DEPLOY. RESECURED O2 MASK PANEL REF A320 AMM 35-20. OK FOR SVC. (LP: 0658931)