Inboard-mounted safety latch mechanism for preventing a walkway platform flip door from being raised without a guardrail installed

A system for preventing a flip door from being raised without a guardrail installed, the system comprising:

• a guardrail comprising two posts, each post having a respective post dog;
• two latch eyes configured to be coupled to a flip door;
• and
• two safety latch mechanisms configured to be coupled to a fixed structure on opposing sides of the flip door, each safety latch mechanism comprising:
• a body,
• a socket disposed in the body and configured to receive a respective post of the two post, and
• a door latch rotatably coupled to the body and biased in a latched position that is configured to engage with a corresponding latch eye of the two latch eyes and thereby retain the flip door in a lowered position,
• wherein based on the respective post being inserted into the socket of the safety latch mechanism, the respective post dog engages with and rotates the door latch from the latched position to an unlatched position, thereby allowing the flip door to be raised from the lowered position to a raised position.