Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Communication Breakdown; Situational Awareness; Time Pressure
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown; Ground Incursion Ramp
Flight Crew Regained Aircraft Control; General Maintenance Action
Aircraft; Human Factors; Procedure
I was a bit frustrated that the Ops Agent wanted to leave 60+ plus customer bags due to the broken carousel at the front of the airport. Even with Dispatch approval for 10 late departure; the Ops Agent said higher ups wanted the flight to leave on time. It seemed a bit arbitrary. I believe I mistakenly released the parking [brake] during rudder pedal adjustment. I don't know what caused the aircraft to roll backwards. I applied [brakes] and the aircraft stopped about 12 feet back from original position. I observed no damage to Captain's pitot probe or angle of attack sensor. Ground Crew confirmed no damage. Safety walkaround completed. No damage. No injuries. No call from ATC. I am self-reporting to improve safety.
B737-800 Captain reported an inadvertent release of the parking brake; allowing the aircraft to roll forward.