B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 227; Flight Crew Type 3855
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance; Flight Deck / Cabin / Aircraft Event Other / Unknown
General Flight Cancelled / Delayed; General Maintenance Action
Human Factors; Aircraft; Incorrect / Not Installed / Unavailable Part; Procedure; MEL
Lower level Flight Attendant crew rest area by Door 3R; inspection showed Halon light DISCH. Switch did not have guard or safety wire to prevent accidental discharge. Not sure if cleaners or stranger hit button. Maintenance consulted and dialog revealed a non-standard panel. The correct panel should have had a guard and procedure on label.I suggest installing a new panel or modify the existing panel to include a guard or safety wire system and recommend issuing a safety bulletin to alert crews. Without lower crew rest we lost 5 revenue seats to crew rest and left uncertainty as to what Maintenance Control thinks is installed on the aircraft.
B777 Captain reported a non-standard fire protection panel installed in crew rest area; resulting in a delay and 5 seats to be reserved for crew rest.