Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Ground Equipment Issue; Ground Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Human Factors
Pushback was completed with both engines running. Ground crew was unable to release the tow bar. Ask if I would release the parking brake to relieve the pressure on the tow bar. I did. They moved the Aircraft then asked to set brakes but the Aircraft was still moving. I told him to stop the push; he continued to say set brakes. Then I figured out he had released the tow bar. I stopped the Aircraft from moving; set brakes. No injury and Aircraft damage. We had a 90 minute delay due to cargo loading. Ground crew not following SOP. The ground crew needs to review SOP; also have a mindset of not having the urgency to rushing.
Air carrier Pilot reported the push back ground crew disconnected the tow bar without advising the flight crew; resulting in the uncontrolled aircraft rolling on the ramp.