Abstract: A system for monitoring the state of a hook-keeper unit of an aeronautical structure. The hook-keeper unit is movable between a latched state and in a non-latched state, a mechanical warning element is movable between an exposed state and an unexposed state, and a connecting mechanism comprises a first end coupled to the hook-keeper unit, and a second end coupled to the mechanical warning element. The connecting mechanism is configured to automatically transmit the state of the hook-keeper unit to the mechanical warning element. The hook-keeper unit and the mechanical warning element are coupled between them by the connecting mechanism in an automatic bijective relationship, so that when the hook-keeper unit is in the latched state, the mechanical warning element is automatically in the unexposed state, and when the hook-keeper unit is in the non-latched state, the mechanical warning element is automatically in the exposed state.

Abstract: A system for monitoring the state of a hook-keeper unit of an aeronautical structure. The hook-keeper unit is movable between a latched state and in a non-latched state, a mechanical warning element is movable between an exposed state and an unexposed state, and a connecting mechanism comprises a first end coupled to the hook-keeper unit, and a second end coupled to the mechanical warning element. The connecting mechanism is configured to automatically transmit the state of the hook-keeper unit to the mechanical warning element. The hook-keeper unit and the mechanical warning element are coupled between them by the connecting mechanism in an automatic bijective relationship, so that when the hook-keeper unit is in the latched state, the mechanical warning element is automatically in the unexposed state, and when the hook-keeper unit is in the non-latched state, the mechanical warning element is automatically in the exposed state.

Abstract: A system for monitoring the state of a two-part-cowl lock unit, the lock unit comprising a pair hook-keeper, has a rod mechanically connected to the lock unit, a spring mechanically coupled with the rod, and a warning mechanism configured to be activated by the rod, to warn of the state of the two-part-cowl lock unit. An aircraft may also be configured to include at least one of the systems for monitoring the state of a two-part cowl lock.

Abstract: The subject matter disclosed herein provides a system for monitoring the state of a two-part-cowl lock unit, the lock unit comprising a pair hook-keeper. This system comprises a rod mechanically connected to the lock unit, a spring mechanically coupled with the rod and warning mechanism adapted to be activated by the rod, and to warn of the state of the two-part-cowl lock unit. The subject matter disclosed herein also provides a system for monitoring the state of a two-part cowl lock and an aircraft including at least one of those systems.