B737-800
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 105; Flight Crew Type 304
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Security
General Maintenance Action
Procedure; Aircraft
FA (Flight Attendant) identified in flight that the aft lavatories O2 mask doors had the security seal improperly fixed. The seals could have prevented deployment of the O2 masks. The forward lavatory was MEL'd out of service. With approximately 45 minutes flight time; the Captain elected to leave only one aft lavatory open. FO (First Officer) concurred. Maintenance contacted after landing.
First Officer reported that a Flight Attendant discovered the security seals were blocking the O2 panels from opening in the Lavatories.