B757-300
Flight Attendant Current
Deviation / Discrepancy - Procedural Security; Flight Deck / Cabin / Aircraft Event Other / Unknown
Aircraft; Company Policy
This is my first time working this aircraft; a B757-300. When giving the pilots a break I deployed the cart since there is no gate. When deploying the cart across the aisle I noticed that it does not rest against the wall as it does in all the other aircraft in the fleet. The B757-300 has a wider aisle where the galley meets the door cross-aisle. As such the cart is not 'stable' and I truly believe that it is a security threat. An assailant would easily be able to topple the cart as such.
[Report narrative contained no additional information.]
Flight Attendant reported the galley cart cannot be secured to block the flight deck for pilot breaks.