What happened
During the pushback phase of operations, a flight attendant received a communication from the lead flight attendant regarding the status of the crew rest area. The attendant initially confirmed that the area was secure but decided to verify the condition of the door again upon looking toward it. She observed that the door was ajar and, concerned that a passenger might have entered the restricted space, proceeded to climb the stairs to inspect the interior.
While descending the stairs after completing the inspection, the flight attendant believed she misplaced her footing on the narrow steps. This loss of balance resulted in a fall down the staircase. The impact caused significant injury, specifically fracturing her arm in three distinct places. After regaining her composure and recovering from the initial shock, she immediately contacted the lead flight attendant. The lead attendant then notified the captain of the incident. As a precautionary measure and to facilitate medical evaluation for the injured crew member, the aircraft was towed back to the gate rather than proceeding with its scheduled departure.