738 park brake set but it moves anyways
How does that happen?
"...a Boeing 737-800 aircraft operated by xxx Airlines on behalf of Travel Service Poland, was conducting flight TVP7467 from Rhodos Diagoras/Maritsa, Greece (LGRP) to Katowice Intl, Poland (EPKT). In preparation for the departure at parking position 10 with the parking brake set and the parking brake light illuminated at LGRP, the aircraft started to roll forward slowly when the chocks were removed. The flight crew applied brakes, however the aircraft continued to roll and came to a stop with the nose wheel on the grass surface, while the main wheels remained on the apron. Passengers were deplaned, baggages were unloaded and the aircraft was pushed back to its original position.
The operator’s maintenance inspected the aircraft and found no damage. The brakes were also inspected and were determined to be serviceable. The aircraft was released back to service."